Block layer patches

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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Fri 23 Sep 2016 12:59:46 BST
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (33 commits)
  block: Remove BB interface from blockdev-add/del
  qemu-iotests/141: Avoid blockdev-add with id
  block: Avoid printing NULL string in error messages
  qemu-iotests/139: Avoid blockdev-add with id
  qemu-iotests/124: Avoid blockdev-add with id
  qemu-iotests/118: Avoid blockdev-add with id
  qemu-iotests/117: Avoid blockdev-add with id
  qemu-iotests/087: Avoid blockdev-add with id
  qemu-iotests/081: Avoid blockdev-add with id
  qemu-iotests/071: Avoid blockdev-add with id
  qemu-iotests/067: Avoid blockdev-add with id
  qemu-iotests/041: Avoid blockdev-add with id
  qemu-iotests/118: Test media change with qdev name
  block: Accept device model name for block_set_io_throttle
  block: Accept device model name for blockdev-change-medium
  block: Accept device model name for eject
  block: Accept device model name for x-blockdev-remove-medium
  block: Accept device model name for x-blockdev-insert-medium
  block: Accept device model name for blockdev-open/close-tray
  qdev-monitor: Add blk_by_qdev_id()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

block.c

@@ -733,6 +733,9 @@ static void bdrv_temp_snapshot_options(int *child_flags, QDict *child_options,
     qdict_set_default_str(child_options, BDRV_OPT_CACHE_DIRECT, "off");
     qdict_set_default_str(child_options, BDRV_OPT_CACHE_NO_FLUSH, "on");
 
+    /* Copy the read-only option from the parent */
+    qdict_copy_default(child_options, parent_options, BDRV_OPT_READ_ONLY);
+
     /* aio=native doesn't work for cache.direct=off, so disable it for the
      * temporary snapshot */
     *child_flags &= ~BDRV_O_NATIVE_AIO;
@@ -755,6 +758,9 @@ static void bdrv_inherited_options(int *child_flags, QDict *child_options,
     qdict_copy_default(child_options, parent_options, BDRV_OPT_CACHE_DIRECT);
     qdict_copy_default(child_options, parent_options, BDRV_OPT_CACHE_NO_FLUSH);
 
+    /* Inherit the read-only option from the parent if it's not set */
+    qdict_copy_default(child_options, parent_options, BDRV_OPT_READ_ONLY);
+
     /* Our block drivers take care to send flushes and respect unmap policy,
      * so we can default to enable both on lower layers regardless of the
      * corresponding parent options. */
@@ -808,7 +814,8 @@ static void bdrv_backing_options(int *child_flags, QDict *child_options,
     qdict_copy_default(child_options, parent_options, BDRV_OPT_CACHE_NO_FLUSH);
 
     /* backing files always opened read-only */
-    flags &= ~(BDRV_O_RDWR | BDRV_O_COPY_ON_READ);
+    qdict_set_default_str(child_options, BDRV_OPT_READ_ONLY, "on");
+    flags &= ~BDRV_O_COPY_ON_READ;
 
     /* snapshot=on is handled on the top layer */
     flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_TEMPORARY);
@@ -855,6 +862,14 @@ static void update_flags_from_options(int *flags, QemuOpts *opts)
     if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_DIRECT, false)) {
         *flags |= BDRV_O_NOCACHE;
     }
+
+    *flags &= ~BDRV_O_RDWR;
+
+    assert(qemu_opt_find(opts, BDRV_OPT_READ_ONLY));
+    if (!qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false)) {
+        *flags |= BDRV_O_RDWR;
+    }
+
 }
 
 static void update_options_from_flags(QDict *options, int flags)
@@ -867,6 +882,10 @@ static void update_options_from_flags(QDict *options, int flags)
         qdict_put(options, BDRV_OPT_CACHE_NO_FLUSH,
                   qbool_from_bool(flags & BDRV_O_NO_FLUSH));
     }
+    if (!qdict_haskey(options, BDRV_OPT_READ_ONLY)) {
+        qdict_put(options, BDRV_OPT_READ_ONLY,
+                  qbool_from_bool(!(flags & BDRV_O_RDWR)));
+    }
 }
 
 static void bdrv_assign_node_name(BlockDriverState *bs,
@@ -930,6 +949,11 @@ static QemuOptsList bdrv_runtime_opts = {
             .type = QEMU_OPT_BOOL,
             .help = "Ignore flush requests",
         },
+        {
+            .name = BDRV_OPT_READ_ONLY,
+            .type = QEMU_OPT_BOOL,
+            .help = "Node is opened in read-only mode",
+        },
         { /* end of list */ }
     },
 };
@@ -961,6 +985,8 @@ static int bdrv_open_common(BlockDriverState *bs, BdrvChild *file,
         goto fail_opts;
     }
 
+    update_flags_from_options(&bs->open_flags, opts);
+
     driver_name = qemu_opt_get(opts, "driver");
     drv = bdrv_find_format(driver_name);
     assert(drv != NULL);
@@ -1022,9 +1048,6 @@ static int bdrv_open_common(BlockDriverState *bs, BdrvChild *file,
     bs->drv = drv;
     bs->opaque = g_malloc0(drv->instance_size);
 
-    /* Apply cache mode options */
-    update_flags_from_options(&bs->open_flags, opts);
-
     /* Open the image, either directly or using a protocol */
     open_flags = bdrv_open_flags(bs, bs->open_flags);
     if (drv->bdrv_file_open) {
@@ -1675,6 +1698,25 @@ static BlockDriverState *bdrv_open_inherit(const char *filename,
         goto fail;
     }
 
+    /* Set the BDRV_O_RDWR and BDRV_O_ALLOW_RDWR flags.
+     * FIXME: we're parsing the QDict to avoid having to create a
+     * QemuOpts just for this, but neither option is optimal. */
+    if (g_strcmp0(qdict_get_try_str(options, BDRV_OPT_READ_ONLY), "on") &&
+        !qdict_get_try_bool(options, BDRV_OPT_READ_ONLY, false)) {
+        flags |= (BDRV_O_RDWR | BDRV_O_ALLOW_RDWR);
+    } else {
+        flags &= ~BDRV_O_RDWR;
+    }
+
+    if (flags & BDRV_O_SNAPSHOT) {
+        snapshot_options = qdict_new();
+        bdrv_temp_snapshot_options(&snapshot_flags, snapshot_options,
+                                   flags, options);
+        /* Let bdrv_backing_options() override "read-only" */
+        qdict_del(options, BDRV_OPT_READ_ONLY);
+        bdrv_backing_options(&flags, options, flags, options);
+    }
+
     bs->open_flags = flags;
     bs->options = options;
     options = qdict_clone_shallow(options);
@@ -1699,18 +1741,6 @@ static BlockDriverState *bdrv_open_inherit(const char *filename,
 
     /* Open image file without format layer */
     if ((flags & BDRV_O_PROTOCOL) == 0) {
-        if (flags & BDRV_O_RDWR) {
-            flags |= BDRV_O_ALLOW_RDWR;
-        }
-        if (flags & BDRV_O_SNAPSHOT) {
-            snapshot_options = qdict_new();
-            bdrv_temp_snapshot_options(&snapshot_flags, snapshot_options,
-                                       flags, options);
-            bdrv_backing_options(&flags, options, flags, options);
-        }
-
-        bs->open_flags = flags;
-
         file = bdrv_open_child(filename, options, "file", bs,
                                &child_file, true, &local_err);
         if (local_err) {
@@ -1895,6 +1925,13 @@ static BlockReopenQueue *bdrv_reopen_queue_child(BlockReopenQueue *bs_queue,
         options = qdict_new();
     }
 
+    /* Check if this BlockDriverState is already in the queue */
+    QSIMPLEQ_FOREACH(bs_entry, bs_queue, entry) {
+        if (bs == bs_entry->state.bs) {
+            break;
+        }
+    }
+
     /*
      * Precedence of options:
      * 1. Explicitly passed in options (highest)
@@ -1915,7 +1952,11 @@ static BlockReopenQueue *bdrv_reopen_queue_child(BlockReopenQueue *bs_queue,
     }
 
     /* Old explicitly set values (don't overwrite by inherited value) */
-    old_options = qdict_clone_shallow(bs->explicit_options);
+    if (bs_entry) {
+        old_options = qdict_clone_shallow(bs_entry->state.explicit_options);
+    } else {
+        old_options = qdict_clone_shallow(bs->explicit_options);
+    }
     bdrv_join_options(bs, options, old_options);
     QDECREF(old_options);
 
@@ -1954,8 +1995,13 @@ static BlockReopenQueue *bdrv_reopen_queue_child(BlockReopenQueue *bs_queue,
                                 child->role, options, flags);
     }
 
-    bs_entry = g_new0(BlockReopenQueueEntry, 1);
-    QSIMPLEQ_INSERT_TAIL(bs_queue, bs_entry, entry);
+    if (!bs_entry) {
+        bs_entry = g_new0(BlockReopenQueueEntry, 1);
+        QSIMPLEQ_INSERT_TAIL(bs_queue, bs_entry, entry);
+    } else {
+        QDECREF(bs_entry->state.options);
+        QDECREF(bs_entry->state.explicit_options);
+    }
 
     bs_entry->state.bs = bs;
     bs_entry->state.options = options;
@@ -3013,11 +3059,6 @@ bool bdrv_debug_is_suspended(BlockDriverState *bs, const char *tag)
     return false;
 }
 
-int bdrv_is_snapshot(BlockDriverState *bs)
-{
-    return !!(bs->open_flags & BDRV_O_SNAPSHOT);
-}
-
 /* backing_file can either be relative, or absolute, or a protocol.  If it is
  * relative, it must be relative to the chain.  So, passing in bs->filename
  * from a BDS as backing_file should not be done, as that may be relative to

block/block-backend.c

@@ -559,6 +559,25 @@ void *blk_get_attached_dev(BlockBackend *blk)
     return blk->dev;
 }
 
+/*
+ * Return the BlockBackend which has the device model @dev attached if it
+ * exists, else null.
+ *
+ * @dev must not be null.
+ */
+BlockBackend *blk_by_dev(void *dev)
+{
+    BlockBackend *blk = NULL;
+
+    assert(dev != NULL);
+    while ((blk = blk_all_next(blk)) != NULL) {
+        if (blk->dev == dev) {
+            return blk;
+        }
+    }
+    return NULL;
+}
+
 /*
  * Set @blk's device model callbacks to @ops.
  * @opaque is the opaque argument to pass to the callbacks.

block/commit.c

@@ -242,14 +242,14 @@ void commit_start(const char *job_id, BlockDriverState *bs,
     orig_overlay_flags = bdrv_get_flags(overlay_bs);
 
     /* convert base & overlay_bs to r/w, if necessary */
-    if (!(orig_overlay_flags & BDRV_O_RDWR)) {
-        reopen_queue = bdrv_reopen_queue(reopen_queue, overlay_bs, NULL,
-                                         orig_overlay_flags | BDRV_O_RDWR);
-    }
     if (!(orig_base_flags & BDRV_O_RDWR)) {
         reopen_queue = bdrv_reopen_queue(reopen_queue, base, NULL,
                                          orig_base_flags | BDRV_O_RDWR);
     }
+    if (!(orig_overlay_flags & BDRV_O_RDWR)) {
+        reopen_queue = bdrv_reopen_queue(reopen_queue, overlay_bs, NULL,
+                                         orig_overlay_flags | BDRV_O_RDWR);
+    }
     if (reopen_queue) {
         bdrv_reopen_multiple(reopen_queue, &local_err);
         if (local_err != NULL) {

block/qcow2-cluster.c

@@ -429,7 +429,7 @@ static int coroutine_fn do_perform_cow(BlockDriverState *bs,
 
     if (bs->encrypted) {
         Error *err = NULL;
-        int64_t sector = (cluster_offset + offset_in_cluster)
+        int64_t sector = (src_cluster_offset + offset_in_cluster)
                          >> BDRV_SECTOR_BITS;
         assert(s->cipher);
         assert((offset_in_cluster & ~BDRV_SECTOR_MASK) == 0);

block/vvfat.c

@@ -2971,7 +2971,8 @@ static BlockDriver vvfat_write_target = {
 static void vvfat_qcow_options(int *child_flags, QDict *child_options,
                                int parent_flags, QDict *parent_options)
 {
-    *child_flags = BDRV_O_RDWR | BDRV_O_NO_FLUSH;
+    qdict_set_default_str(child_options, BDRV_OPT_READ_ONLY, "off");
+    *child_flags = BDRV_O_NO_FLUSH;
 }
 
 static const BdrvChildRole child_vvfat_qcow = {

blockdev.c

@@ -56,7 +56,8 @@
 static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states =
     QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states);
 
-static int do_open_tray(const char *device, bool force, Error **errp);
+static int do_open_tray(const char *blk_name, const char *qdev_id,
+                        bool force, Error **errp);
 
 static const char *const if_name[IF_COUNT] = {
     [IF_NONE] = "none",
@@ -360,9 +361,6 @@ static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags,
     const char *aio;
 
     if (bdrv_flags) {
-        if (!qemu_opt_get_bool(opts, "read-only", false)) {
-            *bdrv_flags |= BDRV_O_RDWR;
-        }
         if (qemu_opt_get_bool(opts, "copy-on-read", false)) {
             *bdrv_flags |= BDRV_O_COPY_ON_READ;
         }
@@ -471,7 +469,7 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts,
     int bdrv_flags = 0;
     int on_read_error, on_write_error;
     bool account_invalid, account_failed;
-    bool writethrough;
+    bool writethrough, read_only;
     BlockBackend *blk;
     BlockDriverState *bs;
     ThrottleConfig cfg;
@@ -567,6 +565,8 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts,
         bdrv_flags |= BDRV_O_SNAPSHOT;
     }
 
+    read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false);
+
     /* init */
     if ((!file || !*file) && !qdict_size(bs_opts)) {
         BlockBackendRootState *blk_rs;
@@ -574,7 +574,7 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts,
         blk = blk_new();
         blk_rs = blk_get_root_state(blk);
         blk_rs->open_flags    = bdrv_flags;
-        blk_rs->read_only     = !(bdrv_flags & BDRV_O_RDWR);
+        blk_rs->read_only     = read_only;
         blk_rs->detect_zeroes = detect_zeroes;
 
         QDECREF(bs_opts);
@@ -588,6 +588,8 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts,
          * Apply the defaults here instead. */
         qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off");
         qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off");
+        qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY,
+                              read_only ? "on" : "off");
         assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0);
 
         if (runstate_check(RUN_STATE_INMIGRATE)) {
@@ -682,6 +684,7 @@ static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp)
      * Apply the defaults here instead. */
     qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off");
     qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off");
+    qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off");
 
     if (runstate_check(RUN_STATE_INMIGRATE)) {
         bdrv_flags |= BDRV_O_INACTIVE;
@@ -805,7 +808,7 @@ QemuOptsList qemu_legacy_drive_opts = {
 
         /* Options that are passed on, but have special semantics with -drive */
         {
-            .name = "read-only",
+            .name = BDRV_OPT_READ_ONLY,
             .type = QEMU_OPT_BOOL,
             .help = "open drive file as read-only",
         },{
@@ -871,7 +874,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
 
         { "group",          "throttling.group" },
 
-        { "readonly",       "read-only" },
+        { "readonly",       BDRV_OPT_READ_ONLY },
     };
 
     for (i = 0; i < ARRAY_SIZE(opt_renames); i++) {
@@ -943,7 +946,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
     }
 
     /* copy-on-read is disabled with a warning for read-only devices */
-    read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false);
+    read_only |= qemu_opt_get_bool(legacy_opts, BDRV_OPT_READ_ONLY, false);
     copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false);
 
     if (read_only && copy_on_read) {
@@ -951,7 +954,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
         copy_on_read = false;
     }
 
-    qdict_put(bs_opts, "read-only",
+    qdict_put(bs_opts, BDRV_OPT_READ_ONLY,
               qstring_from_str(read_only ? "on" : "off"));
     qdict_put(bs_opts, "copy-on-read",
               qstring_from_str(copy_on_read ? "on" :"off"));
@@ -1196,6 +1199,29 @@ static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp)
     return bs;
 }
 
+static BlockBackend *qmp_get_blk(const char *blk_name, const char *qdev_id,
+                                 Error **errp)
+{
+    BlockBackend *blk;
+
+    if (!blk_name == !qdev_id) {
+        error_setg(errp, "Need exactly one of 'device' and 'id'");
+        return NULL;
+    }
+
+    if (qdev_id) {
+        blk = blk_by_qdev_id(qdev_id, errp);
+    } else {
+        blk = blk_by_name(blk_name);
+        if (blk == NULL) {
+            error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                      "Device '%s' not found", blk_name);
+        }
+    }
+
+    return blk;
+}
+
 void hmp_commit(Monitor *mon, const QDict *qdict)
 {
     const char *device = qdict_get_str(qdict, "device");
@@ -1777,8 +1803,7 @@ static void external_snapshot_prepare(BlkActionState *common,
     }
 
     if (bdrv_has_blk(state->new_bs)) {
-        error_setg(errp, "The snapshot is already in use by %s",
-                   bdrv_get_parent_name(state->new_bs));
+        error_setg(errp, "The snapshot is already in use");
         return;
     }
 
@@ -2239,7 +2264,9 @@ exit:
     block_job_txn_unref(block_job_txn);
 }
 
-void qmp_eject(const char *device, bool has_force, bool force, Error **errp)
+void qmp_eject(bool has_device, const char *device,
+               bool has_id, const char *id,
+               bool has_force, bool force, Error **errp)
 {
     Error *local_err = NULL;
     int rc;
@@ -2248,14 +2275,16 @@ void qmp_eject(const char *device, bool has_force, bool force, Error **errp)
         force = false;
     }
 
-    rc = do_open_tray(device, force, &local_err);
+    rc = do_open_tray(has_device ? device : NULL,
+                      has_id ? id : NULL,
+                      force, &local_err);
     if (rc && rc != -ENOSYS) {
         error_propagate(errp, local_err);
         return;
     }
     error_free(local_err);
 
-    qmp_x_blockdev_remove_medium(device, errp);
+    qmp_x_blockdev_remove_medium(has_device, device, has_id, id, errp);
 }
 
 void qmp_block_passwd(bool has_device, const char *device,
@@ -2293,15 +2322,15 @@ void qmp_block_passwd(bool has_device, const char *device,
  * If the guest was asked to open the tray, return -EINPROGRESS.
  * Else, return 0.
  */
-static int do_open_tray(const char *device, bool force, Error **errp)
+static int do_open_tray(const char *blk_name, const char *qdev_id,
+                        bool force, Error **errp)
 {
     BlockBackend *blk;
+    const char *device = qdev_id ?: blk_name;
     bool locked;
 
-    blk = blk_by_name(device);
+    blk = qmp_get_blk(blk_name, qdev_id, errp);
     if (!blk) {
-        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
-                  "Device '%s' not found", device);
         return -ENODEV;
     }
 
@@ -2337,7 +2366,9 @@ static int do_open_tray(const char *device, bool force, Error **errp)
     return 0;
 }
 
-void qmp_blockdev_open_tray(const char *device, bool has_force, bool force,
+void qmp_blockdev_open_tray(bool has_device, const char *device,
+                            bool has_id, const char *id,
+                            bool has_force, bool force,
                             Error **errp)
 {
     Error *local_err = NULL;
@@ -2346,7 +2377,9 @@ void qmp_blockdev_open_tray(const char *device, bool has_force, bool force,
     if (!has_force) {
         force = false;
     }
-    rc = do_open_tray(device, force, &local_err);
+    rc = do_open_tray(has_device ? device : NULL,
+                      has_id ? id : NULL,
+                      force, &local_err);
     if (rc && rc != -ENOSYS && rc != -EINPROGRESS) {
         error_propagate(errp, local_err);
         return;
@@ -2354,19 +2387,22 @@ void qmp_blockdev_open_tray(const char *device, bool has_force, bool force,
     error_free(local_err);
 }
 
-void qmp_blockdev_close_tray(const char *device, Error **errp)
+void qmp_blockdev_close_tray(bool has_device, const char *device,
+                             bool has_id, const char *id,
+                             Error **errp)
 {
     BlockBackend *blk;
 
-    blk = blk_by_name(device);
+    device = has_device ? device : NULL;
+    id = has_id ? id : NULL;
+
+    blk = qmp_get_blk(device, id, errp);
     if (!blk) {
-        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
-                  "Device '%s' not found", device);
         return;
     }
 
     if (!blk_dev_has_removable_media(blk)) {
-        error_setg(errp, "Device '%s' is not removable", device);
+        error_setg(errp, "Device '%s' is not removable", device ?: id);
         return;
     }
 
@@ -2382,30 +2418,34 @@ void qmp_blockdev_close_tray(const char *device, Error **errp)
     blk_dev_change_media_cb(blk, true);
 }
 
-void qmp_x_blockdev_remove_medium(const char *device, Error **errp)
+void qmp_x_blockdev_remove_medium(bool has_device, const char *device,
+                                  bool has_id, const char *id, Error **errp)
 {
     BlockBackend *blk;
     BlockDriverState *bs;
     AioContext *aio_context;
-    bool has_device;
+    bool has_attached_device;
 
-    blk = blk_by_name(device);
+    device = has_device ? device : NULL;
+    id = has_id ? id : NULL;
+
+    blk = qmp_get_blk(device, id, errp);
     if (!blk) {
-        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
-                  "Device '%s' not found", device);
         return;
     }
 
     /* For BBs without a device, we can exchange the BDS tree at will */
-    has_device = blk_get_attached_dev(blk);
+    has_attached_device = blk_get_attached_dev(blk);
 
-    if (has_device && !blk_dev_has_removable_media(blk)) {
-        error_setg(errp, "Device '%s' is not removable", device);
+    if (has_attached_device && !blk_dev_has_removable_media(blk)) {
+        error_setg(errp, "Device '%s' is not removable", device ?: id);
         return;
     }
 
-    if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) {
-        error_setg(errp, "Tray of device '%s' is not open", device);
+    if (has_attached_device && blk_dev_has_tray(blk) &&
+        !blk_dev_is_tray_open(blk))
+    {
+        error_setg(errp, "Tray of device '%s' is not open", device ?: id);
         return;
     }
 
@@ -2435,34 +2475,26 @@ out:
     aio_context_release(aio_context);
 }
 
-static void qmp_blockdev_insert_anon_medium(const char *device,
+static void qmp_blockdev_insert_anon_medium(BlockBackend *blk,
                                             BlockDriverState *bs, Error **errp)
 {
-    BlockBackend *blk;
     bool has_device;
 
-    blk = blk_by_name(device);
-    if (!blk) {
-        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
-                  "Device '%s' not found", device);
-        return;
-    }
-
     /* For BBs without a device, we can exchange the BDS tree at will */
     has_device = blk_get_attached_dev(blk);
 
     if (has_device && !blk_dev_has_removable_media(blk)) {
-        error_setg(errp, "Device '%s' is not removable", device);
+        error_setg(errp, "Device is not removable");
         return;
     }
 
     if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) {
-        error_setg(errp, "Tray of device '%s' is not open", device);
+        error_setg(errp, "Tray of the device is not open");
         return;
     }
 
     if (blk_bs(blk)) {
-        error_setg(errp, "There already is a medium in device '%s'", device);
+        error_setg(errp, "There already is a medium in the device");
         return;
     }
 
@@ -2478,11 +2510,20 @@ static void qmp_blockdev_insert_anon_medium(const char *device,
     }
 }
 
-void qmp_x_blockdev_insert_medium(const char *device, const char *node_name,
-                                  Error **errp)
+void qmp_x_blockdev_insert_medium(bool has_device, const char *device,
+                                  bool has_id, const char *id,
+                                  const char *node_name, Error **errp)
 {
+    BlockBackend *blk;
     BlockDriverState *bs;
 
+    blk = qmp_get_blk(has_device ? device : NULL,
+                      has_id ? id : NULL,
+                      errp);
+    if (!blk) {
+        return;
+    }
+
     bs = bdrv_find_node(node_name);
     if (!bs) {
         error_setg(errp, "Node '%s' not found", node_name);
@@ -2490,15 +2531,16 @@ void qmp_x_blockdev_insert_medium(const char *device, const char *node_name,
     }
 
     if (bdrv_has_blk(bs)) {
-        error_setg(errp, "Node '%s' is already in use by '%s'", node_name,
-                   bdrv_get_parent_name(bs));
+        error_setg(errp, "Node '%s' is already in use", node_name);
         return;
     }
 
-    qmp_blockdev_insert_anon_medium(device, bs, errp);
+    qmp_blockdev_insert_anon_medium(blk, bs, errp);
 }
 
-void qmp_blockdev_change_medium(const char *device, const char *filename,
+void qmp_blockdev_change_medium(bool has_device, const char *device,
+                                bool has_id, const char *id,
+                                const char *filename,
                                 bool has_format, const char *format,
                                 bool has_read_only,
                                 BlockdevChangeReadOnlyMode read_only,
@@ -2511,10 +2553,10 @@ void qmp_blockdev_change_medium(const char *device, const char *filename,
     QDict *options = NULL;
     Error *err = NULL;
 
-    blk = blk_by_name(device);
+    blk = qmp_get_blk(has_device ? device : NULL,
+                      has_id ? id : NULL,
+                      errp);
     if (!blk) {
-        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
-                  "Device '%s' not found", device);
         goto fail;
     }
 
@@ -2562,7 +2604,9 @@ void qmp_blockdev_change_medium(const char *device, const char *filename,
         goto fail;
     }
 
-    rc = do_open_tray(device, false, &err);
+    rc = do_open_tray(has_device ? device : NULL,
+                      has_id ? id : NULL,
+                      false, &err);
     if (rc && rc != -ENOSYS) {
         error_propagate(errp, err);
         goto fail;
@@ -2570,13 +2614,13 @@ void qmp_blockdev_change_medium(const char *device, const char *filename,
     error_free(err);
     err = NULL;
 
-    qmp_x_blockdev_remove_medium(device, &err);
+    qmp_x_blockdev_remove_medium(has_device, device, has_id, id, errp);
     if (err) {
         error_propagate(errp, err);
         goto fail;
     }
 
-    qmp_blockdev_insert_anon_medium(device, medium_bs, &err);
+    qmp_blockdev_insert_anon_medium(blk, medium_bs, &err);
     if (err) {
         error_propagate(errp, err);
         goto fail;
@@ -2584,7 +2628,7 @@ void qmp_blockdev_change_medium(const char *device, const char *filename,
 
     blk_apply_root_state(blk, medium_bs);
 
-    qmp_blockdev_close_tray(device, errp);
+    qmp_blockdev_close_tray(has_device, device, has_id, id, errp);
 
 fail:
     /* If the medium has been inserted, the device has its own reference, so
@@ -2601,10 +2645,10 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp)
     BlockBackend *blk;
     AioContext *aio_context;
 
-    blk = blk_by_name(arg->device);
+    blk = qmp_get_blk(arg->has_device ? arg->device : NULL,
+                      arg->has_id ? arg->id : NULL,
+                      errp);
     if (!blk) {
-        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
-                  "Device '%s' not found", arg->device);
         return;
     }
 
@@ -2613,7 +2657,7 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp)
 
     bs = blk_bs(blk);
     if (!bs) {
-        error_setg(errp, "Device '%s' has no medium", arg->device);
+        error_setg(errp, "Device has no medium");
         goto out;
     }
 
@@ -2677,7 +2721,9 @@ void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp)
          * just update the throttling group. */
         if (!blk_get_public(blk)->throttle_state) {
             blk_io_limits_enable(blk,
-                                 arg->has_group ? arg->group : arg->device);
+                                 arg->has_group ? arg->group :
+                                 arg->has_device ? arg->device :
+                                 arg->id);
         } else if (arg->has_group) {
             blk_io_limits_update_group(blk, arg->group);
         }
@@ -2798,7 +2844,7 @@ void hmp_drive_del(Monitor *mon, const QDict *qdict)
 
     bs = bdrv_find_node(id);
     if (bs) {
-        qmp_x_blockdev_del(false, NULL, true, id, &local_err);
+        qmp_x_blockdev_del(id, &local_err);
         if (local_err) {
             error_report_err(local_err);
         }
@@ -3781,7 +3827,6 @@ out:
 void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
 {
     BlockDriverState *bs;
-    BlockBackend *blk = NULL;
     QObject *obj;
     Visitor *v = qmp_output_visitor_new(&obj);
     QDict *qdict;
@@ -3813,37 +3858,21 @@ void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
 
     qdict_flatten(qdict);
 
-    if (options->has_id) {
-        blk = blockdev_init(NULL, qdict, &local_err);
-        if (local_err) {
-            error_propagate(errp, local_err);
-            goto fail;
-        }
-
-        bs = blk_bs(blk);
-    } else {
-        if (!qdict_get_try_str(qdict, "node-name")) {
-            error_setg(errp, "'id' and/or 'node-name' need to be specified for "
-                       "the root node");
-            goto fail;
-        }
-
-        bs = bds_tree_init(qdict, errp);
-        if (!bs) {
-            goto fail;
-        }
-
-        QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list);
+    if (!qdict_get_try_str(qdict, "node-name")) {
+        error_setg(errp, "'node-name' must be specified for the root node");
+        goto fail;
     }
 
+    bs = bds_tree_init(qdict, errp);
+    if (!bs) {
+        goto fail;
+    }
+
+    QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list);
+
     if (bs && bdrv_key_required(bs)) {
-        if (blk) {
-            monitor_remove_blk(blk);
-            blk_unref(blk);
-        } else {
-            QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
-            bdrv_unref(bs);
-        }
+        QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
+        bdrv_unref(bs);
         error_setg(errp, "blockdev-add doesn't support encrypted devices");
         goto fail;
     }
@@ -3852,82 +3881,42 @@ fail:
     visit_free(v);
 }
 
-void qmp_x_blockdev_del(bool has_id, const char *id,
-                        bool has_node_name, const char *node_name, Error **errp)
+void qmp_x_blockdev_del(const char *node_name, Error **errp)
 {
     AioContext *aio_context;
-    BlockBackend *blk;
     BlockDriverState *bs;
 
-    if (has_id && has_node_name) {
-        error_setg(errp, "Only one of id and node-name must be specified");
-        return;
-    } else if (!has_id && !has_node_name) {
-        error_setg(errp, "No block device specified");
+    bs = bdrv_find_node(node_name);
+    if (!bs) {
+        error_setg(errp, "Cannot find node %s", node_name);
         return;
     }
-
-    if (has_id) {
-        /* blk_by_name() never returns a BB that is not owned by the monitor */
-        blk = blk_by_name(id);
-        if (!blk) {
-            error_setg(errp, "Cannot find block backend %s", id);
-            return;
-        }
-        if (blk_legacy_dinfo(blk)) {
-            error_setg(errp, "Deleting block backend added with drive-add"
-                       " is not supported");
-            return;
-        }
-        if (blk_get_refcnt(blk) > 1) {
-            error_setg(errp, "Block backend %s is in use", id);
-            return;
-        }
-        bs = blk_bs(blk);
-        aio_context = blk_get_aio_context(blk);
-    } else {
-        blk = NULL;
-        bs = bdrv_find_node(node_name);
-        if (!bs) {
-            error_setg(errp, "Cannot find node %s", node_name);
-            return;
-        }
-        if (bdrv_has_blk(bs)) {
-            error_setg(errp, "Node %s is in use by %s",
-                       node_name, bdrv_get_parent_name(bs));
-            return;
-        }
-        aio_context = bdrv_get_aio_context(bs);
+    if (bdrv_has_blk(bs)) {
+        error_setg(errp, "Node %s is in use", node_name);
+        return;
     }
-
+    aio_context = bdrv_get_aio_context(bs);
     aio_context_acquire(aio_context);
 
-    if (bs) {
-        if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) {
-            goto out;
-        }
-
-        if (!blk && !QTAILQ_IN_USE(bs, monitor_list)) {
-            error_setg(errp, "Node %s is not owned by the monitor",
-                       bs->node_name);
-            goto out;
-        }
-
-        if (bs->refcnt > 1) {
-            error_setg(errp, "Block device %s is in use",
-                       bdrv_get_device_or_node_name(bs));
-            goto out;
-        }
+    if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) {
+        goto out;
     }
 
-    if (blk) {
-        monitor_remove_blk(blk);
-        blk_unref(blk);
-    } else {
-        QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
-        bdrv_unref(bs);
+    if (!bs->monitor_list.tqe_prev) {
+        error_setg(errp, "Node %s is not owned by the monitor",
+                   bs->node_name);
+        goto out;
     }
 
+    if (bs->refcnt > 1) {
+        error_setg(errp, "Block device %s is in use",
+                   bdrv_get_device_or_node_name(bs));
+        goto out;
+    }
+
+    QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
+    bdrv_unref(bs);
+
 out:
     aio_context_release(aio_context);
 }
@@ -4040,7 +4029,7 @@ QemuOptsList qemu_common_drive_opts = {
             .type = QEMU_OPT_STRING,
             .help = "write error action",
         },{
-            .name = "read-only",
+            .name = BDRV_OPT_READ_ONLY,
             .type = QEMU_OPT_BOOL,
             .help = "open drive file as read-only",
         },{
@@ -4158,10 +4147,6 @@ static QemuOptsList qemu_root_bds_opts = {
             .name = "aio",
             .type = QEMU_OPT_STRING,
             .help = "host AIO implementation (threads, native)",
-        },{
-            .name = "read-only",
-            .type = QEMU_OPT_BOOL,
-            .help = "open drive file as read-only",
         },{
             .name = "copy-on-read",
             .type = QEMU_OPT_BOOL,

docs/qmp-commands.txt

@@ -72,12 +72,14 @@ Eject a removable medium.
 
 Arguments:
 
-- force: force ejection (json-bool, optional)
-- device: device name (json-string)
+- "force": force ejection (json-bool, optional)
+- "device": block device name (deprecated, use @id instead)
+            (json-string, optional)
+- "id": the name or QOM path of the guest device (json-string, optional)
 
 Example:
 
--> { "execute": "eject", "arguments": { "device": "ide1-cd0" } }
+-> { "execute": "eject", "arguments": { "id": "ide0-1-0" } }
 <- { "return": {} }
 
 Note: The "force" argument defaults to false.
@@ -1457,7 +1459,9 @@ Change I/O throttle limits for a block drive.
 
 Arguments:
 
-- "device": device name (json-string)
+- "device": block device name (deprecated, use @id instead)
+            (json-string, optional)
+- "id": the name or QOM path of the guest device (json-string, optional)
 - "bps": total throughput limit in bytes per second (json-int)
 - "bps_rd": read throughput limit in bytes per second (json-int)
 - "bps_wr": write throughput limit in bytes per second (json-int)
@@ -1481,7 +1485,7 @@ Arguments:
 
 Example:
 
--> { "execute": "block_set_io_throttle", "arguments": { "device": "virtio0",
+-> { "execute": "block_set_io_throttle", "arguments": { "id": "ide0-1-0",
                                                "bps": 1000000,
                                                "bps_rd": 0,
                                                "bps_wr": 0,
@@ -3137,7 +3141,7 @@ Example (2):
      "arguments": {
          "options": {
            "driver": "qcow2",
-           "id": "my_disk",
+           "node-name": "my_disk",
            "discard": "unmap",
            "cache": {
                "direct": true,
@@ -3164,18 +3168,9 @@ x-blockdev-del
 ------------
 Since 2.5
 
-Deletes a block device thas has been added using blockdev-add.
-The selected device can be either a block backend or a graph node.
-
-In the former case the backend will be destroyed, along with its
-inserted medium if there's any. The command will fail if the backend
-or its medium are in use.
-
-In the latter case the node will be destroyed. The command will fail
-if the node is attached to a block backend or is otherwise being
-used.
-
-One of "id" or "node-name" must be specified, but not both.
+Deletes a block device that has been added using blockdev-add.
+The command will fail if the node is attached to a device or is
+otherwise being used.
 
 This command is still a work in progress and is considered
 experimental. Stay away from it unless you want to help with its
@@ -3183,8 +3178,7 @@ development.
 
 Arguments:
 
-- "id": Name of the block backend device to delete (json-string, optional)
-- "node-name": Name of the graph node to delete (json-string, optional)
+- "node-name": Name of the graph node to delete (json-string)
 
 Example:
 
@@ -3192,7 +3186,7 @@ Example:
      "arguments": {
          "options": {
              "driver": "qcow2",
-             "id": "drive0",
+             "node-name": "node0",
              "file": {
                  "driver": "file",
                  "filename": "test.qcow2"
@@ -3204,7 +3198,7 @@ Example:
 <- { "return": {} }
 
 -> { "execute": "x-blockdev-del",
-     "arguments": { "id": "drive0" }
+     "arguments": { "node-name": "node0" }
    }
 <- { "return": {} }
 
@@ -3228,7 +3222,9 @@ which no such event will be generated, these include:
 
 Arguments:
 
-- "device": block device name (json-string)
+- "device": block device name (deprecated, use @id instead)
+            (json-string, optional)
+- "id": the name or QOM path of the guest device (json-string, optional)
 - "force": if false (the default), an eject request will be sent to the guest if
            it has locked the tray (and the tray will not be opened immediately);
            if true, the tray will be opened regardless of whether it is locked
@@ -3237,7 +3233,7 @@ Arguments:
 Example:
 
 -> { "execute": "blockdev-open-tray",
-     "arguments": { "device": "ide1-cd0" } }
+     "arguments": { "id": "ide0-1-0" } }
 
 <- { "timestamp": { "seconds": 1418751016,
                     "microseconds": 716996 },
@@ -3258,12 +3254,14 @@ If the tray was already closed before, this will be a no-op.
 
 Arguments:
 
-- "device": block device name (json-string)
+- "device": block device name (deprecated, use @id instead)
+            (json-string, optional)
+- "id": the name or QOM path of the guest device (json-string, optional)
 
 Example:
 
 -> { "execute": "blockdev-close-tray",
-     "arguments": { "device": "ide1-cd0" } }
+     "arguments": { "id": "ide0-1-0" } }
 
 <- { "timestamp": { "seconds": 1418751345,
                     "microseconds": 272147 },
@@ -3286,18 +3284,20 @@ Stay away from it unless you want to help with its development.
 
 Arguments:
 
-- "device": block device name (json-string)
+- "device": block device name (deprecated, use @id instead)
+            (json-string, optional)
+- "id": the name or QOM path of the guest device (json-string, optional)
 
 Example:
 
 -> { "execute": "x-blockdev-remove-medium",
-     "arguments": { "device": "ide1-cd0" } }
+     "arguments": { "id": "ide0-1-0" } }
 
 <- { "error": { "class": "GenericError",
-                "desc": "Tray of device 'ide1-cd0' is not open" } }
+                "desc": "Tray of device 'ide0-1-0' is not open" } }
 
 -> { "execute": "blockdev-open-tray",
-     "arguments": { "device": "ide1-cd0" } }
+     "arguments": { "id": "ide0-1-0" } }
 
 <- { "timestamp": { "seconds": 1418751627,
                     "microseconds": 549958 },
@@ -3308,7 +3308,7 @@ Example:
 <- { "return": {} }
 
 -> { "execute": "x-blockdev-remove-medium",
-     "arguments": { "device": "ide1-cd0" } }
+     "arguments": { "device": "ide0-1-0" } }
 
 <- { "return": {} }
 
@@ -3324,7 +3324,9 @@ Stay away from it unless you want to help with its development.
 
 Arguments:
 
-- "device": block device name (json-string)
+- "device": block device name (deprecated, use @id instead)
+            (json-string, optional)
+- "id": the name or QOM path of the guest device (json-string, optional)
 - "node-name": root node of the BDS tree to insert into the block device
 
 Example:
@@ -3338,7 +3340,7 @@ Example:
 <- { "return": {} }
 
 -> { "execute": "x-blockdev-insert-medium",
-     "arguments": { "device": "ide1-cd0",
+     "arguments": { "id": "ide0-1-0",
                     "node-name": "node0" } }
 
 <- { "return": {} }
@@ -3448,7 +3450,9 @@ and loading a new image file which is inserted as the new medium.
 
 Arguments:
 
-- "device": device name (json-string)
+- "device": block device name (deprecated, use @id instead)
+            (json-string, optional)
+- "id": the name or QOM path of the guest device (json-string, optional)
 - "filename": filename of the new image (json-string)
 - "format": format of the new image (json-string, optional)
 - "read-only-mode": new read-only mode (json-string, optional)
@@ -3459,7 +3463,7 @@ Examples:
 1. Change a removable medium
 
 -> { "execute": "blockdev-change-medium",
-             "arguments": { "device": "ide1-cd0",
+             "arguments": { "id": "ide0-1-0",
                             "filename": "/srv/images/Fedora-12-x86_64-DVD.iso",
                             "format": "raw" } }
 <- { "return": {} }
@@ -3467,7 +3471,7 @@ Examples:
 2. Load a read-only medium into a writable drive
 
 -> { "execute": "blockdev-change-medium",
-             "arguments": { "device": "isa-fd0",
+             "arguments": { "id": "floppyA",
                             "filename": "/srv/images/ro.img",
                             "format": "raw",
                             "read-only-mode": "retain" } }
@@ -3477,7 +3481,7 @@ Examples:
        "desc": "Could not open '/srv/images/ro.img': Permission denied" } }
 
 -> { "execute": "blockdev-change-medium",
-             "arguments": { "device": "isa-fd0",
+             "arguments": { "id": "floppyA",
                             "filename": "/srv/images/ro.img",
                             "format": "raw",
                             "read-only-mode": "read-only" } }

hmp.c

@@ -1376,7 +1376,7 @@ void hmp_eject(Monitor *mon, const QDict *qdict)
     const char *device = qdict_get_str(qdict, "device");
     Error *err = NULL;
 
-    qmp_eject(device, true, force, &err);
+    qmp_eject(true, device, false, NULL, true, force, &err);
     hmp_handle_error(mon, &err);
 }
 
@@ -1422,8 +1422,9 @@ void hmp_change(Monitor *mon, const QDict *qdict)
             }
         }
 
-        qmp_blockdev_change_medium(device, target, !!arg, arg,
-                                   !!read_only, read_only_mode, &err);
+        qmp_blockdev_change_medium(true, device, false, NULL, target,
+                                   !!arg, arg, !!read_only, read_only_mode,
+                                   &err);
         if (err &&
             error_get_class(err) == ERROR_CLASS_DEVICE_ENCRYPTED) {
             error_free(err);
@@ -1924,6 +1925,7 @@ void hmp_qemu_io(Monitor *mon, const QDict *qdict)
 {
     BlockBackend *blk;
     BlockBackend *local_blk = NULL;
+    AioContext *aio_context;
     const char* device = qdict_get_str(qdict, "device");
     const char* command = qdict_get_str(qdict, "command");
     Error *err = NULL;
@@ -1939,17 +1941,12 @@ void hmp_qemu_io(Monitor *mon, const QDict *qdict)
         }
     }
 
-    if (blk) {
-        AioContext *aio_context = blk_get_aio_context(blk);
-        aio_context_acquire(aio_context);
+    aio_context = blk_get_aio_context(blk);
+    aio_context_acquire(aio_context);
 
-        qemuio_command(blk, command);
+    qemuio_command(blk, command);
 
-        aio_context_release(aio_context);
-    } else {
-        error_set(&err, ERROR_CLASS_DEVICE_NOT_FOUND,
-                  "Device '%s' not found", device);
-    }
+    aio_context_release(aio_context);
 
 fail:
     blk_unref(local_blk);

include/block/block.h

@@ -107,6 +107,7 @@ typedef struct HDGeometry {
 #define BDRV_OPT_CACHE_WB       "cache.writeback"
 #define BDRV_OPT_CACHE_DIRECT   "cache.direct"
 #define BDRV_OPT_CACHE_NO_FLUSH "cache.no-flush"
+#define BDRV_OPT_READ_ONLY      "read-only"
 
 
 #define BDRV_SECTOR_BITS   9
@@ -414,7 +415,6 @@ void bdrv_get_full_backing_filename_from_filename(const char *backed,
                                                   const char *backing,
                                                   char *dest, size_t sz,
                                                   Error **errp);
-int bdrv_is_snapshot(BlockDriverState *bs);
 
 int path_has_protocol(const char *path);
 int path_is_absolute(const char *path);

include/sysemu/block-backend.h

@@ -111,6 +111,8 @@ int blk_attach_dev(BlockBackend *blk, void *dev);
 void blk_attach_dev_nofail(BlockBackend *blk, void *dev);
 void blk_detach_dev(BlockBackend *blk, void *dev);
 void *blk_get_attached_dev(BlockBackend *blk);
+BlockBackend *blk_by_dev(void *dev);
+BlockBackend *blk_by_qdev_id(const char *id, Error **errp);
 void blk_set_dev_ops(BlockBackend *blk, const BlockDevOps *ops, void *opaque);
 int blk_pread_unthrottled(BlockBackend *blk, int64_t offset, uint8_t *buf,
                           int count);

qapi/block-core.json

@@ -900,7 +900,7 @@
 #          otherwise. (Since 2.4)
 #
 # @compress: #optional true to compress data, if the target format supports it.
-#            (default: false) (since 2.7)
+#            (default: false) (since 2.8)
 #
 # @on-source-error: #optional the action to take on an error on the source,
 #                   default 'report'.  'stop' and 'enospc' can only be used
@@ -941,7 +941,7 @@
 #         for unlimited.
 #
 # @compress: #optional true to compress data, if the target format supports it.
-#            (default: false) (since 2.7)
+#            (default: false) (since 2.8)
 #
 # @on-source-error: #optional the action to take on an error on the source,
 #                   default 'report'.  'stop' and 'enospc' can only be used
@@ -1377,7 +1377,9 @@
 #
 # A set of parameters describing block throttling.
 #
-# @device: The name of the device
+# @device: #optional Block device name (deprecated, use @id instead)
+#
+# @id: #optional The name or QOM path of the guest device (since: 2.8)
 #
 # @bps: total throughput limit in bytes per second
 #
@@ -1446,8 +1448,8 @@
 # Since: 1.1
 ##
 { 'struct': 'BlockIOThrottle',
-  'data': { 'device': 'str', 'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int',
-            'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
+  'data': { '*device': 'str', '*id': 'str', 'bps': 'int', 'bps_rd': 'int',
+            'bps_wr': 'int', 'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int',
             '*bps_max': 'int', '*bps_rd_max': 'int',
             '*bps_wr_max': 'int', '*iops_max': 'int',
             '*iops_rd_max': 'int', '*iops_wr_max': 'int',
@@ -2215,13 +2217,8 @@
 # block devices, independent of the block driver:
 #
 # @driver:        block driver name
-# @id:            #optional id by which the new block device can be referred to.
-#                 This option is only allowed on the top level of blockdev-add.
-#                 A BlockBackend will be created by blockdev-add if and only if
-#                 this option is given.
-# @node-name:     #optional the name of a block driver state node (Since 2.0).
-#                 This option is required on the top level of blockdev-add if
-#                 the @id option is not given there.
+# @node-name:     #optional the node name of the new node (Since 2.0).
+#                 This option is required on the top level of blockdev-add.
 # @discard:       #optional discard-related options (default: ignore)
 # @cache:         #optional cache-related options
 # @aio:           #optional AIO backend (default: threads)
@@ -2236,8 +2233,6 @@
 ##
 { 'union': 'BlockdevOptions',
   'base': { 'driver': 'BlockdevDriver',
-# TODO 'id' is a BB-level option, remove it
-            '*id': 'str',
             '*node-name': 'str',
             '*discard': 'BlockdevDiscardOptions',
             '*cache': 'BlockdevCacheOptions',
@@ -2321,29 +2316,18 @@
 # @x-blockdev-del:
 #
 # Deletes a block device that has been added using blockdev-add.
-# The selected device can be either a block backend or a graph node.
-#
-# In the former case the backend will be destroyed, along with its
-# inserted medium if there's any. The command will fail if the backend
-# or its medium are in use.
-#
-# In the latter case the node will be destroyed. The command will fail
-# if the node is attached to a block backend or is otherwise being
-# used.
-#
-# One of @id or @node-name must be specified, but not both.
+# The command will fail if the node is attached to a device or is
+# otherwise being used.
 #
 # This command is still a work in progress and is considered
 # experimental. Stay away from it unless you want to help with its
 # development.
 #
-# @id: #optional Name of the block backend device to delete.
-#
-# @node-name: #optional Name of the graph node to delete.
+# @node-name: Name of the graph node to delete.
 #
 # Since: 2.5
 ##
-{ 'command': 'x-blockdev-del', 'data': { '*id': 'str', '*node-name': 'str' } }
+{ 'command': 'x-blockdev-del', 'data': { 'node-name': 'str' } }
 
 ##
 # @blockdev-open-tray:
@@ -2363,7 +2347,9 @@
 #   to it
 # - if the guest device does not have an actual tray
 #
-# @device: block device name
+# @device: #optional Block device name (deprecated, use @id instead)
+#
+# @id:     #optional The name or QOM path of the guest device (since: 2.8)
 #
 # @force:  #optional if false (the default), an eject request will be sent to
 #          the guest if it has locked the tray (and the tray will not be opened
@@ -2373,7 +2359,8 @@
 # Since: 2.5
 ##
 { 'command': 'blockdev-open-tray',
-  'data': { 'device': 'str',
+  'data': { '*device': 'str',
+            '*id': 'str',
             '*force': 'bool' } }
 
 ##
@@ -2385,12 +2372,15 @@
 #
 # If the tray was already closed before, this will be a no-op.
 #
-# @device: block device name
+# @device:  #optional Block device name (deprecated, use @id instead)
+#
+# @id:      #optional The name or QOM path of the guest device (since: 2.8)
 #
 # Since: 2.5
 ##
 { 'command': 'blockdev-close-tray',
-  'data': { 'device': 'str' } }
+  'data': { '*device': 'str',
+            '*id': 'str' } }
 
 ##
 # @x-blockdev-remove-medium:
@@ -2404,12 +2394,15 @@
 # This command is still a work in progress and is considered experimental.
 # Stay away from it unless you want to help with its development.
 #
-# @device: block device name
+# @device: #optional Block device name (deprecated, use @id instead)
+#
+# @id:     #optional The name or QOM path of the guest device (since: 2.8)
 #
 # Since: 2.5
 ##
 { 'command': 'x-blockdev-remove-medium',
-  'data': { 'device': 'str' } }
+  'data': { '*device': 'str',
+            '*id': 'str' } }
 
 ##
 # @x-blockdev-insert-medium:
@@ -2421,14 +2414,17 @@
 # This command is still a work in progress and is considered experimental.
 # Stay away from it unless you want to help with its development.
 #
-# @device:    block device name
+# @device:    #optional Block device name (deprecated, use @id instead)
+#
+# @id:        #optional The name or QOM path of the guest device (since: 2.8)
 #
 # @node-name: name of a node in the block driver state graph
 #
 # Since: 2.5
 ##
 { 'command': 'x-blockdev-insert-medium',
-  'data': { 'device': 'str',
+  'data': { '*device': 'str',
+            '*id': 'str',
             'node-name': 'str'} }
 
 
@@ -2458,7 +2454,10 @@
 # combines blockdev-open-tray, x-blockdev-remove-medium,
 # x-blockdev-insert-medium and blockdev-close-tray).
 #
-# @device:          block device name
+# @device:          #optional Block device name (deprecated, use @id instead)
+#
+# @id:              #optional The name or QOM path of the guest device
+#                   (since: 2.8)
 #
 # @filename:        filename of the new image to be loaded
 #
@@ -2471,7 +2470,8 @@
 # Since: 2.5
 ##
 { 'command': 'blockdev-change-medium',
-  'data': { 'device': 'str',
+  'data': { '*device': 'str',
+            '*id': 'str',
             'filename': 'str',
             '*format': 'str',
             '*read-only-mode': 'BlockdevChangeReadOnlyMode' } }

qapi/block.json

@@ -125,7 +125,9 @@
 #
 # Ejects a device from a removable drive.
 #
-# @device:  The name of the device
+# @device:  #optional Block device name (deprecated, use @id instead)
+#
+# @id:      #optional The name or QOM path of the guest device (since: 2.8)
 #
 # @force:   @optional If true, eject regardless of whether the drive is locked.
 #           If not specified, the default value is false.
@@ -137,7 +139,10 @@
 #
 # Since: 0.14.0
 ##
-{ 'command': 'eject', 'data': {'device': 'str', '*force': 'bool'} }
+{ 'command': 'eject',
+  'data': { '*device': 'str',
+            '*id': 'str',
+            '*force': 'bool' } }
 
 ##
 # @nbd-server-start:

qdev-monitor.c

@@ -28,6 +28,7 @@
 #include "qemu/config-file.h"
 #include "qemu/error-report.h"
 #include "qemu/help_option.h"
+#include "sysemu/block-backend.h"
 
 /*
  * Aliases were a bad idea from the start.  Let's keep them
@@ -801,7 +802,7 @@ void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp)
     object_unref(OBJECT(dev));
 }
 
-void qmp_device_del(const char *id, Error **errp)
+static DeviceState *find_device_state(const char *id, Error **errp)
 {
     Object *obj;
 
@@ -819,15 +820,40 @@ void qmp_device_del(const char *id, Error **errp)
     if (!obj) {
         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
                   "Device '%s' not found", id);
-        return;
+        return NULL;
     }
 
     if (!object_dynamic_cast(obj, TYPE_DEVICE)) {
         error_setg(errp, "%s is not a hotpluggable device", id);
-        return;
+        return NULL;
     }
 
-    qdev_unplug(DEVICE(obj), errp);
+    return DEVICE(obj);
+}
+
+void qmp_device_del(const char *id, Error **errp)
+{
+    DeviceState *dev = find_device_state(id, errp);
+    if (dev != NULL) {
+        qdev_unplug(dev, errp);
+    }
+}
+
+BlockBackend *blk_by_qdev_id(const char *id, Error **errp)
+{
+    DeviceState *dev;
+    BlockBackend *blk;
+
+    dev = find_device_state(id, errp);
+    if (dev == NULL) {
+        return NULL;
+    }
+
+    blk = blk_by_dev(dev);
+    if (!blk) {
+        error_setg(errp, "Device does not have a block device backend");
+    }
+    return blk;
 }
 
 void qdev_machine_init(void)

qmp.c

@@ -431,8 +431,8 @@ void qmp_change(const char *device, const char *target,
     if (strcmp(device, "vnc") == 0) {
         qmp_change_vnc(target, has_arg, arg, errp);
     } else {
-        qmp_blockdev_change_medium(device, target, has_arg, arg, false, 0,
-                                   errp);
+        qmp_blockdev_change_medium(true, device, false, NULL, target,
+                                   has_arg, arg, false, 0, errp);
     }
 }
 

tests/check-block.sh

@@ -1,5 +1,10 @@
 #!/bin/sh
 
+FORMAT_LIST="raw qcow2 qed vmdk vpc"
+if [ "$#" -ne 0 ]; then
+    FORMAT_LIST="$@"
+fi
+
 export QEMU_PROG="$(pwd)/x86_64-softmmu/qemu-system-x86_64"
 export QEMU_IMG_PROG="$(pwd)/qemu-img"
 export QEMU_IO_PROG="$(pwd)/qemu-io"
@@ -12,10 +17,8 @@ fi
 cd tests/qemu-iotests
 
 ret=0
-./check -T -nocache -raw || ret=1
-./check -T -nocache -qcow2 || ret=1
-./check -T -nocache -qed|| ret=1
-./check -T -nocache -vmdk|| ret=1
-./check -T -nocache -vpc || ret=1
+for FMT in $FORMAT_LIST ; do
+    ./check -T -nocache -$FMT || ret=1
+done
 
 exit $ret

tests/qemu-iotests/041

@@ -782,7 +782,7 @@ class TestRepairQuorum(iotests.QMPTestCase):
         self.vm.launch()
 
         #assemble the quorum block device from the individual files
-        args = { "options" : { "driver": "quorum", "id": "quorum0",
+        args = { "options" : { "driver": "quorum", "node-name": "quorum0",
                  "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] } }
         if self.has_quorum():
             result = self.vm.qmp("blockdev-add", **args)
@@ -804,13 +804,12 @@ class TestRepairQuorum(iotests.QMPTestCase):
 
         self.assert_no_active_block_jobs()
 
-        result = self.vm.qmp('drive-mirror', device='quorum0', sync='full',
-                             node_name="repair0",
-                             replaces="img1",
+        result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
+                             sync='full', node_name="repair0", replaces="img1",
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'return', {})
 
-        self.complete_and_wait(drive="quorum0")
+        self.complete_and_wait(drive="job0")
         self.assert_has_block_node("repair0", quorum_repair_img)
         # TODO: a better test requiring some QEMU infrastructure will be added
         #       to check that this file is really driven by quorum
@@ -824,13 +823,12 @@ class TestRepairQuorum(iotests.QMPTestCase):
 
         self.assert_no_active_block_jobs()
 
-        result = self.vm.qmp('drive-mirror', device='quorum0', sync='full',
-                             node_name="repair0",
-                             replaces="img1",
+        result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
+                             sync='full', node_name="repair0", replaces="img1",
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'return', {})
 
-        self.cancel_and_wait(drive="quorum0", force=True)
+        self.cancel_and_wait(drive="job0", force=True)
         # here we check that the last registered quorum file has not been
         # swapped out and unref
         self.assert_has_block_node(None, quorum_img3)
@@ -842,13 +840,12 @@ class TestRepairQuorum(iotests.QMPTestCase):
 
         self.assert_no_active_block_jobs()
 
-        result = self.vm.qmp('drive-mirror', device='quorum0', sync='full',
-                             node_name="repair0",
-                             replaces="img1",
+        result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
+                             sync='full', node_name="repair0", replaces="img1",
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'return', {})
 
-        self.wait_ready_and_cancel(drive="quorum0")
+        self.wait_ready_and_cancel(drive="job0")
         # here we check that the last registered quorum file has not been
         # swapped out and unref
         self.assert_has_block_node(None, quorum_img3)
@@ -862,13 +859,12 @@ class TestRepairQuorum(iotests.QMPTestCase):
 
         self.assert_no_active_block_jobs()
 
-        result = self.vm.qmp('drive-mirror', device='quorum0', sync='full',
-                             node_name="repair0",
-                             replaces="img1",
+        result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
+                             sync='full', node_name="repair0", replaces="img1",
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'return', {})
 
-        result = self.vm.qmp('block-job-pause', device='quorum0')
+        result = self.vm.qmp('block-job-pause', device='job0')
         self.assert_qmp(result, 'return', {})
 
         time.sleep(1)
@@ -879,10 +875,10 @@ class TestRepairQuorum(iotests.QMPTestCase):
         result = self.vm.qmp('query-block-jobs')
         self.assert_qmp(result, 'return[0]/offset', offset)
 
-        result = self.vm.qmp('block-job-resume', device='quorum0')
+        result = self.vm.qmp('block-job-resume', device='job0')
         self.assert_qmp(result, 'return', {})
 
-        self.complete_and_wait(drive="quorum0")
+        self.complete_and_wait(drive="job0")
         self.vm.shutdown()
         self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img),
                         'target image does not match source after mirroring')
@@ -894,7 +890,7 @@ class TestRepairQuorum(iotests.QMPTestCase):
         if iotests.qemu_default_machine != 'pc':
             return
 
-        result = self.vm.qmp('drive-mirror', device='drive0', # CD-ROM
+        result = self.vm.qmp('drive-mirror', job_id='job0', device='drive0', # CD-ROM
                              sync='full',
                              node_name='repair0',
                              replaces='img1',
@@ -905,18 +901,18 @@ class TestRepairQuorum(iotests.QMPTestCase):
         if not self.has_quorum():
             return
 
-        result = self.vm.qmp('drive-mirror', device='quorum0', sync='full',
-                             node_name='repair0',
-                             replaces='img1',
-                             mode='existing',
-                             target=quorum_repair_img, format=iotests.imgfmt)
+        result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
+                             sync='full', node_name='repair0', replaces='img1',
+                             mode='existing', target=quorum_repair_img,
+                             format=iotests.imgfmt)
         self.assert_qmp(result, 'error/class', 'GenericError')
 
     def test_device_not_found(self):
         if not self.has_quorum():
             return
 
-        result = self.vm.qmp('drive-mirror', device='nonexistent', sync='full',
+        result = self.vm.qmp('drive-mirror', job_id='job0',
+                             device='nonexistent', sync='full',
                              node_name='repair0',
                              replaces='img1',
                              target=quorum_repair_img, format=iotests.imgfmt)
@@ -926,7 +922,7 @@ class TestRepairQuorum(iotests.QMPTestCase):
         if not self.has_quorum():
             return
 
-        result = self.vm.qmp('drive-mirror', device='quorum0',
+        result = self.vm.qmp('drive-mirror', device='quorum0', job_id='job0',
                              node_name='repair0',
                              replaces='img1',
                              target=quorum_repair_img, format=iotests.imgfmt)
@@ -936,8 +932,8 @@ class TestRepairQuorum(iotests.QMPTestCase):
         if not self.has_quorum():
             return
 
-        result = self.vm.qmp('drive-mirror', device='quorum0', sync='full',
-                             replaces='img1',
+        result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
+                             sync='full', replaces='img1',
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'error/class', 'GenericError')
 
@@ -945,9 +941,8 @@ class TestRepairQuorum(iotests.QMPTestCase):
         if not self.has_quorum():
             return
 
-        result = self.vm.qmp('drive-mirror', device='quorum0', sync='full',
-                             node_name='repair0',
-                             replaces='img77',
+        result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
+                             sync='full', node_name='repair0', replaces='img77',
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'error/class', 'GenericError')
 
@@ -959,19 +954,17 @@ class TestRepairQuorum(iotests.QMPTestCase):
                              snapshot_file=quorum_snapshot_file,
                              snapshot_node_name="snap1");
 
-        result = self.vm.qmp('drive-mirror', device='quorum0', sync='full',
-                             node_name='repair0',
-                             replaces="img1",
+        result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
+                             sync='full', node_name='repair0', replaces="img1",
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'error/class', 'GenericError')
 
-        result = self.vm.qmp('drive-mirror', device='quorum0', sync='full',
-                             node_name='repair0',
-                             replaces="snap1",
+        result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
+                             sync='full', node_name='repair0', replaces="snap1",
                              target=quorum_repair_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'return', {})
 
-        self.complete_and_wait(drive="quorum0")
+        self.complete_and_wait('job0')
         self.assert_has_block_node("repair0", quorum_repair_img)
         # TODO: a better test requiring some QEMU infrastructure will be added
         #       to check that this file is really driven by quorum

tests/qemu-iotests/067

@@ -121,7 +121,7 @@ run_qemu <<EOF
   "arguments": {
       "options": {
         "driver": "$IMGFMT",
-        "id": "disk",
+        "node-name": "disk",
         "file": {
             "driver": "file",
             "filename": "$TEST_IMG"
@@ -129,13 +129,13 @@ run_qemu <<EOF
       }
     }
   }
-{ "execute": "query-block" }
+{ "execute": "query-named-block-nodes" }
 { "execute": "device_add",
    "arguments": { "driver": "virtio-blk", "drive": "disk",
                   "id": "virtio0" } }
 { "execute": "device_del", "arguments": { "id": "virtio0" } }
 { "execute": "system_reset" }
-{ "execute": "query-block" }
+{ "execute": "query-named-block-nodes" }
 { "execute": "quit" }
 EOF
 

tests/qemu-iotests/067.out

@@ -258,49 +258,72 @@ Testing:
 {
     "return": [
         {
-            "device": "disk",
-            "locked": false,
-            "removable": true,
-            "inserted": {
-                "iops_rd": 0,
-                "detect_zeroes": "off",
-                "image": {
-                    "virtual-size": 134217728,
-                    "filename": "TEST_DIR/t.qcow2",
-                    "cluster-size": 65536,
-                    "format": "qcow2",
-                    "actual-size": SIZE,
-                    "format-specific": {
-                        "type": "qcow2",
-                        "data": {
-                            "compat": "1.1",
-                            "lazy-refcounts": false,
-                            "refcount-bits": 16,
-                            "corrupt": false
-                        }
-                    },
-                    "dirty-flag": false
+            "iops_rd": 0,
+            "detect_zeroes": "off",
+            "image": {
+                "virtual-size": 134217728,
+                "filename": "TEST_DIR/t.qcow2",
+                "cluster-size": 65536,
+                "format": "qcow2",
+                "actual-size": SIZE,
+                "format-specific": {
+                    "type": "qcow2",
+                    "data": {
+                        "compat": "1.1",
+                        "lazy-refcounts": false,
+                        "refcount-bits": 16,
+                        "corrupt": false
+                    }
                 },
-                "iops_wr": 0,
-                "ro": false,
-                "node-name": "NODE_NAME",
-                "backing_file_depth": 0,
-                "drv": "qcow2",
-                "iops": 0,
-                "bps_wr": 0,
-                "write_threshold": 0,
-                "encrypted": false,
-                "bps": 0,
-                "bps_rd": 0,
-                "cache": {
-                    "no-flush": false,
-                    "direct": false,
-                    "writeback": true
-                },
-                "file": "TEST_DIR/t.qcow2",
-                "encryption_key_missing": false
+                "dirty-flag": false
             },
-            "type": "unknown"
+            "iops_wr": 0,
+            "ro": false,
+            "node-name": "disk",
+            "backing_file_depth": 0,
+            "drv": "qcow2",
+            "iops": 0,
+            "bps_wr": 0,
+            "write_threshold": 0,
+            "encrypted": false,
+            "bps": 0,
+            "bps_rd": 0,
+            "cache": {
+                "no-flush": false,
+                "direct": false,
+                "writeback": true
+            },
+            "file": "TEST_DIR/t.qcow2",
+            "encryption_key_missing": false
+        },
+        {
+            "iops_rd": 0,
+            "detect_zeroes": "off",
+            "image": {
+                "virtual-size": 197120,
+                "filename": "TEST_DIR/t.qcow2",
+                "format": "file",
+                "actual-size": SIZE,
+                "dirty-flag": false
+            },
+            "iops_wr": 0,
+            "ro": false,
+            "node-name": "NODE_NAME",
+            "backing_file_depth": 0,
+            "drv": "file",
+            "iops": 0,
+            "bps_wr": 0,
+            "write_threshold": 0,
+            "encrypted": false,
+            "bps": 0,
+            "bps_rd": 0,
+            "cache": {
+                "no-flush": false,
+                "direct": false,
+                "writeback": true
+            },
+            "file": "TEST_DIR/t.qcow2",
+            "encryption_key_missing": false
         }
     ]
 }
@@ -319,50 +342,72 @@ Testing:
 {
     "return": [
         {
-            "io-status": "ok",
-            "device": "disk",
-            "locked": false,
-            "removable": true,
-            "inserted": {
-                "iops_rd": 0,
-                "detect_zeroes": "off",
-                "image": {
-                    "virtual-size": 134217728,
-                    "filename": "TEST_DIR/t.qcow2",
-                    "cluster-size": 65536,
-                    "format": "qcow2",
-                    "actual-size": SIZE,
-                    "format-specific": {
-                        "type": "qcow2",
-                        "data": {
-                            "compat": "1.1",
-                            "lazy-refcounts": false,
-                            "refcount-bits": 16,
-                            "corrupt": false
-                        }
-                    },
-                    "dirty-flag": false
+            "iops_rd": 0,
+            "detect_zeroes": "off",
+            "image": {
+                "virtual-size": 134217728,
+                "filename": "TEST_DIR/t.qcow2",
+                "cluster-size": 65536,
+                "format": "qcow2",
+                "actual-size": SIZE,
+                "format-specific": {
+                    "type": "qcow2",
+                    "data": {
+                        "compat": "1.1",
+                        "lazy-refcounts": false,
+                        "refcount-bits": 16,
+                        "corrupt": false
+                    }
                 },
-                "iops_wr": 0,
-                "ro": false,
-                "node-name": "NODE_NAME",
-                "backing_file_depth": 0,
-                "drv": "qcow2",
-                "iops": 0,
-                "bps_wr": 0,
-                "write_threshold": 0,
-                "encrypted": false,
-                "bps": 0,
-                "bps_rd": 0,
-                "cache": {
-                    "no-flush": false,
-                    "direct": false,
-                    "writeback": true
-                },
-                "file": "TEST_DIR/t.qcow2",
-                "encryption_key_missing": false
+                "dirty-flag": false
             },
-            "type": "unknown"
+            "iops_wr": 0,
+            "ro": false,
+            "node-name": "disk",
+            "backing_file_depth": 0,
+            "drv": "qcow2",
+            "iops": 0,
+            "bps_wr": 0,
+            "write_threshold": 0,
+            "encrypted": false,
+            "bps": 0,
+            "bps_rd": 0,
+            "cache": {
+                "no-flush": false,
+                "direct": false,
+                "writeback": true
+            },
+            "file": "TEST_DIR/t.qcow2",
+            "encryption_key_missing": false
+        },
+        {
+            "iops_rd": 0,
+            "detect_zeroes": "off",
+            "image": {
+                "virtual-size": 197120,
+                "filename": "TEST_DIR/t.qcow2",
+                "format": "file",
+                "actual-size": SIZE,
+                "dirty-flag": false
+            },
+            "iops_wr": 0,
+            "ro": false,
+            "node-name": "NODE_NAME",
+            "backing_file_depth": 0,
+            "drv": "file",
+            "iops": 0,
+            "bps_wr": 0,
+            "write_threshold": 0,
+            "encrypted": false,
+            "bps": 0,
+            "bps_rd": 0,
+            "cache": {
+                "no-flush": false,
+                "direct": false,
+                "writeback": true
+            },
+            "file": "TEST_DIR/t.qcow2",
+            "encryption_key_missing": false
         }
     ]
 }

tests/qemu-iotests/071

@@ -118,7 +118,7 @@ run_qemu <<EOF
     "arguments": {
         "options": {
             "driver": "$IMGFMT",
-            "id": "drive0-debug",
+            "node-name": "drive0-debug",
             "file": {
                 "driver": "blkdebug",
                 "image": "drive0",
@@ -159,7 +159,7 @@ run_qemu <<EOF
     "arguments": {
         "options": {
             "driver": "blkverify",
-            "id": "drive0-verify",
+            "node-name": "drive0-verify",
             "test": "drive0",
             "raw": {
                 "driver": "file",
@@ -195,7 +195,7 @@ run_qemu <<EOF
     "arguments": {
         "options": {
             "driver": "blkverify",
-            "id": "drive0-verify",
+            "node-name": "drive0-verify",
             "test": {
                 "driver": "$IMGFMT",
                 "file": {
@@ -234,7 +234,7 @@ run_qemu <<EOF
     "arguments": {
         "options": {
             "driver": "$IMGFMT",
-            "id": "drive0-debug",
+            "node-name": "drive0-debug",
             "file": {
                 "driver": "blkdebug",
                 "image": "drive0",

tests/qemu-iotests/081

@@ -119,7 +119,7 @@ run_qemu <<EOF
     "arguments": {
         "options": {
             "driver": "quorum",
-            "id": "drive0-quorum",
+            "node-name": "drive0-quorum",
             "vote-threshold": 2,
             "children": [
                 {

tests/qemu-iotests/085.out

@@ -68,9 +68,9 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/
 
 === Invalid command - snapshot node used as active layer ===
 
-{"error": {"class": "GenericError", "desc": "The snapshot is already in use by virtio0"}}
-{"error": {"class": "GenericError", "desc": "The snapshot is already in use by virtio0"}}
-{"error": {"class": "GenericError", "desc": "The snapshot is already in use by virtio1"}}
+{"error": {"class": "GenericError", "desc": "The snapshot is already in use"}}
+{"error": {"class": "GenericError", "desc": "The snapshot is already in use"}}
+{"error": {"class": "GenericError", "desc": "The snapshot is already in use"}}
 
 === Invalid command - snapshot node used as backing hd ===
 

tests/qemu-iotests/087

@@ -77,50 +77,12 @@ echo
 echo === Duplicate ID ===
 echo
 
-run_qemu <<EOF
+run_qemu -drive driver=$IMGFMT,id=disk,node-name=test-node,file="$TEST_IMG" <<EOF
 { "execute": "qmp_capabilities" }
 { "execute": "blockdev-add",
   "arguments": {
       "options": {
         "driver": "$IMGFMT",
-        "id": "disk",
-        "node-name": "test-node",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
-      }
-    }
-  }
-{ "execute": "blockdev-add",
-  "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "id": "disk",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
-      }
-    }
-  }
-{ "execute": "blockdev-add",
-  "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "id": "test-node",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
-      }
-    }
-  }
-{ "execute": "blockdev-add",
-  "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "id": "disk2",
         "node-name": "disk",
         "file": {
             "driver": "file",
@@ -133,7 +95,6 @@ run_qemu <<EOF
   "arguments": {
       "options": {
         "driver": "$IMGFMT",
-        "id": "disk2",
         "node-name": "test-node",
         "file": {
             "driver": "file",
@@ -142,19 +103,6 @@ run_qemu <<EOF
       }
     }
   }
-{ "execute": "blockdev-add",
-  "arguments": {
-      "options": {
-        "driver": "$IMGFMT",
-        "id": "disk3",
-        "node-name": "disk3",
-        "file": {
-            "driver": "file",
-            "filename": "$TEST_IMG"
-        }
-      }
-    }
-  }
 { "execute": "quit" }
 EOF
 
@@ -168,7 +116,7 @@ run_qemu <<EOF
   "arguments": {
       "options": {
         "driver": "$IMGFMT",
-        "id": "disk",
+        "node-name": "disk",
         "aio": "native",
         "file": {
             "driver": "file",
@@ -191,7 +139,7 @@ run_qemu -S <<EOF
   "arguments": {
       "options": {
         "driver": "$IMGFMT",
-        "id": "disk",
+        "node-name": "disk",
         "file": {
             "driver": "file",
             "filename": "$TEST_IMG"
@@ -208,7 +156,7 @@ run_qemu <<EOF
   "arguments": {
       "options": {
         "driver": "$IMGFMT",
-        "id": "disk",
+        "node-name": "disk",
         "file": {
             "driver": "file",
             "filename": "$TEST_IMG"
@@ -229,7 +177,7 @@ run_qemu -S <<EOF
 { "execute": "blockdev-add",
   "arguments": {
       "options": {
-        "id": "disk"
+        "node-name": "disk"
       }
     }
   }

tests/qemu-iotests/087.out

@@ -6,22 +6,18 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
 Testing:
 QMP_VERSION
 {"return": {}}
-{"error": {"class": "GenericError", "desc": "'id' and/or 'node-name' need to be specified for the root node"}}
+{"error": {"class": "GenericError", "desc": "'node-name' must be specified for the root node"}}
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN"}
 
 
 === Duplicate ID ===
 
-Testing:
+Testing: -drive driver=IMGFMT,id=disk,node-name=test-node,file=TEST_DIR/t.IMGFMT
 QMP_VERSION
 {"return": {}}
-{"return": {}}
-{"error": {"class": "GenericError", "desc": "Device with id 'disk' already exists"}}
-{"error": {"class": "GenericError", "desc": "Device name 'test-node' conflicts with an existing node name"}}
 {"error": {"class": "GenericError", "desc": "node-name=disk is conflicting with a device id"}}
 {"error": {"class": "GenericError", "desc": "Duplicate node name"}}
-{"error": {"class": "GenericError", "desc": "Device name 'disk3' conflicts with an existing node name"}}
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN"}
 

tests/qemu-iotests/117

@@ -52,14 +52,14 @@ _send_qemu_cmd $QEMU_HANDLE \
 
 _send_qemu_cmd $QEMU_HANDLE \
     "{ 'execute': 'blockdev-add',
-       'arguments': { 'options': { 'id': 'protocol',
+       'arguments': { 'options': { 'node-name': 'protocol',
                                    'driver': 'file',
                                    'filename': '$TEST_IMG' } } }" \
     'return'
 
 _send_qemu_cmd $QEMU_HANDLE \
     "{ 'execute': 'blockdev-add',
-       'arguments': { 'options': { 'id': 'format',
+       'arguments': { 'options': { 'node-name': 'format',
                                    'driver': '$IMGFMT',
                                    'file': 'protocol' } } }" \
     'return'

tests/qemu-iotests/118

@@ -62,6 +62,9 @@ class ChangeBaseClass(iotests.QMPTestCase):
             self.fail('Timeout while waiting for the tray to close')
 
 class GeneralChangeTestsBaseClass(ChangeBaseClass):
+
+    device_name = None
+
     def test_change(self):
         result = self.vm.qmp('change', device='drive0', target=new_img,
                                        arg=iotests.imgfmt)
@@ -76,9 +79,15 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
     def test_blockdev_change_medium(self):
-        result = self.vm.qmp('blockdev-change-medium', device='drive0',
-                                                       filename=new_img,
-                                                       format=iotests.imgfmt)
+        if self.device_name is not None:
+            result = self.vm.qmp('blockdev-change-medium',
+                                 id=self.device_name, filename=new_img,
+                                 format=iotests.imgfmt)
+        else:
+            result = self.vm.qmp('blockdev-change-medium',
+                                 device='drive0', filename=new_img,
+                                 format=iotests.imgfmt)
+
         self.assert_qmp(result, 'return', {})
 
         self.wait_for_open()
@@ -90,7 +99,10 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
     def test_eject(self):
-        result = self.vm.qmp('eject', device='drive0', force=True)
+        if self.device_name is not None:
+            result = self.vm.qmp('eject', id=self.device_name, force=True)
+        else:
+            result = self.vm.qmp('eject', device='drive0', force=True)
         self.assert_qmp(result, 'return', {})
 
         self.wait_for_open()
@@ -101,7 +113,10 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
     def test_tray_eject_change(self):
-        result = self.vm.qmp('eject', device='drive0', force=True)
+        if self.device_name is not None:
+            result = self.vm.qmp('eject', id=self.device_name, force=True)
+        else:
+            result = self.vm.qmp('eject', device='drive0', force=True)
         self.assert_qmp(result, 'return', {})
 
         self.wait_for_open()
@@ -111,9 +126,12 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
             self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
-        result = self.vm.qmp('blockdev-change-medium', device='drive0',
-                                                       filename=new_img,
-                                                       format=iotests.imgfmt)
+        if self.device_name is not None:
+            result = self.vm.qmp('blockdev-change-medium', id=self.device_name,
+                                 filename=new_img, format=iotests.imgfmt)
+        else:
+            result = self.vm.qmp('blockdev-change-medium', device='drive0',
+                                 filename=new_img, format=iotests.imgfmt)
         self.assert_qmp(result, 'return', {})
 
         self.wait_for_close()
@@ -124,7 +142,12 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
     def test_tray_open_close(self):
-        result = self.vm.qmp('blockdev-open-tray', device='drive0', force=True)
+        if self.device_name is not None:
+            result = self.vm.qmp('blockdev-open-tray',
+                                 id=self.device_name, force=True)
+        else:
+            result = self.vm.qmp('blockdev-open-tray',
+                                 device='drive0', force=True)
         self.assert_qmp(result, 'return', {})
 
         self.wait_for_open()
@@ -137,7 +160,10 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         else:
             self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
-        result = self.vm.qmp('blockdev-close-tray', device='drive0')
+        if self.device_name is not None:
+            result = self.vm.qmp('blockdev-close-tray', id=self.device_name)
+        else:
+            result = self.vm.qmp('blockdev-close-tray', device='drive0')
         self.assert_qmp(result, 'return', {})
 
         if self.has_real_tray or not self.was_empty:
@@ -162,7 +188,10 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
             self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
-        result = self.vm.qmp('blockdev-close-tray', device='drive0')
+        if self.device_name is not None:
+            result = self.vm.qmp('blockdev-close-tray', id=self.device_name)
+        else:
+            result = self.vm.qmp('blockdev-close-tray', device='drive0')
         self.assert_qmp(result, 'return', {})
 
         self.wait_for_close()
@@ -206,7 +235,12 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
                                                'driver': 'file'}})
         self.assert_qmp(result, 'return', {})
 
-        result = self.vm.qmp('blockdev-open-tray', device='drive0', force=True)
+        if self.device_name is not None:
+            result = self.vm.qmp('blockdev-open-tray',
+                                 id=self.device_name, force=True)
+        else:
+            result = self.vm.qmp('blockdev-open-tray',
+                                 device='drive0', force=True)
         self.assert_qmp(result, 'return', {})
 
         self.wait_for_open()
@@ -219,7 +253,11 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         else:
             self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
-        result = self.vm.qmp('x-blockdev-remove-medium', device='drive0')
+        if self.device_name is not None:
+            result = self.vm.qmp('x-blockdev-remove-medium',
+                                 id=self.device_name)
+        else:
+            result = self.vm.qmp('x-blockdev-remove-medium', device='drive0')
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('query-block')
@@ -227,8 +265,12 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
             self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
-        result = self.vm.qmp('x-blockdev-insert-medium', device='drive0',
-                                                       node_name='new')
+        if self.device_name is not None:
+            result = self.vm.qmp('x-blockdev-insert-medium',
+                                 id=self.device_name, node_name='new')
+        else:
+            result = self.vm.qmp('x-blockdev-insert-medium',
+                                 device='drive0', node_name='new')
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('query-block')
@@ -236,7 +278,10 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
             self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
-        result = self.vm.qmp('blockdev-close-tray', device='drive0')
+        if self.device_name is not None:
+            result = self.vm.qmp('blockdev-close-tray', id=self.device_name)
+        else:
+            result = self.vm.qmp('blockdev-close-tray', device='drive0')
         self.assert_qmp(result, 'return', {})
 
         self.wait_for_close()
@@ -280,7 +325,13 @@ class TestInitiallyFilled(GeneralChangeTestsBaseClass):
     def setUp(self, media, interface):
         qemu_img('create', '-f', iotests.imgfmt, old_img, '1440k')
         qemu_img('create', '-f', iotests.imgfmt, new_img, '1440k')
-        self.vm = iotests.VM().add_drive(old_img, 'media=%s' % media, interface)
+        self.vm = iotests.VM()
+        if interface == 'ide':
+            self.device_name = 'qdev0'
+            self.vm.add_drive(old_img, 'media=%s' % media, 'none')
+            self.vm.add_device('ide-cd,drive=drive0,id=%s' % self.device_name)
+        else:
+            self.vm.add_drive(old_img, 'media=%s' % media, interface)
         self.vm.launch()
 
     def tearDown(self):
@@ -597,13 +648,9 @@ class TestBlockJobsAfterCycle(ChangeBaseClass):
         qemu_img('create', '-f', iotests.imgfmt, old_img, '1M')
 
         self.vm = iotests.VM()
+        self.vm.add_drive_raw("id=drive0,driver=null-co,if=none")
         self.vm.launch()
 
-        result = self.vm.qmp('blockdev-add',
-                             options={'id': 'drive0',
-                                      'driver': 'null-co'})
-        self.assert_qmp(result, 'return', {})
-
         result = self.vm.qmp('query-block')
         self.assert_qmp(result, 'return[0]/inserted/image/format', 'null-co')
 

tests/qemu-iotests/124

@@ -49,8 +49,8 @@ def transaction_bitmap_clear(node, name, **kwargs):
 
 
 def transaction_drive_backup(device, target, **kwargs):
-    return transaction_action('drive-backup', device=device, target=target,
-                              **kwargs)
+    return transaction_action('drive-backup', job_id=device, device=device,
+                              target=target, **kwargs)
 
 
 class Bitmap:
@@ -177,7 +177,8 @@ class TestIncrementalBackupBase(iotests.QMPTestCase):
     def create_anchor_backup(self, drive=None):
         if drive is None:
             drive = self.drives[-1]
-        res = self.do_qmp_backup(device=drive['id'], sync='full',
+        res = self.do_qmp_backup(job_id=drive['id'],
+                                 device=drive['id'], sync='full',
                                  format=drive['fmt'], target=drive['backup'])
         self.assertTrue(res)
         self.files.append(drive['backup'])
@@ -188,7 +189,8 @@ class TestIncrementalBackupBase(iotests.QMPTestCase):
         if bitmap is None:
             bitmap = self.bitmaps[-1]
         _, reference = bitmap.last_target()
-        res = self.do_qmp_backup(device=bitmap.drive['id'], sync='full',
+        res = self.do_qmp_backup(job_id=bitmap.drive['id'],
+                                 device=bitmap.drive['id'], sync='full',
                                  format=bitmap.drive['fmt'], target=reference)
         self.assertTrue(res)
 
@@ -221,7 +223,8 @@ class TestIncrementalBackupBase(iotests.QMPTestCase):
             parent, _ = bitmap.last_target()
 
         target = self.prepare_backup(bitmap, parent)
-        res = self.do_qmp_backup(device=bitmap.drive['id'],
+        res = self.do_qmp_backup(job_id=bitmap.drive['id'],
+                                 device=bitmap.drive['id'],
                                  sync='incremental', bitmap=bitmap.name,
                                  format=bitmap.drive['fmt'], target=target,
                                  mode='existing')
@@ -414,7 +417,7 @@ class TestIncrementalBackup(TestIncrementalBackupBase):
 
         # Create a blkdebug interface to this img as 'drive1'
         result = self.vm.qmp('blockdev-add', options={
-            'id': drive1['id'],
+            'node-name': drive1['id'],
             'driver': drive1['fmt'],
             'file': {
                 'driver': 'blkdebug',
@@ -558,7 +561,7 @@ class TestIncrementalBackupBlkdebug(TestIncrementalBackupBase):
 
         drive0 = self.drives[0]
         result = self.vm.qmp('blockdev-add', options={
-            'id': drive0['id'],
+            'node-name': drive0['id'],
             'driver': drive0['fmt'],
             'file': {
                 'driver': 'blkdebug',

tests/qemu-iotests/139

@@ -31,6 +31,7 @@ class TestBlockdevDel(iotests.QMPTestCase):
     def setUp(self):
         iotests.qemu_img('create', '-f', iotests.imgfmt, base_img, '1M')
         self.vm = iotests.VM()
+        self.vm.add_device("virtio-scsi-pci,id=virtio-scsi")
         self.vm.launch()
 
     def tearDown(self):
@@ -39,18 +40,6 @@ class TestBlockdevDel(iotests.QMPTestCase):
         if os.path.isfile(new_img):
             os.remove(new_img)
 
-    # Check whether a BlockBackend exists
-    def checkBlockBackend(self, backend, node, must_exist = True):
-        result = self.vm.qmp('query-block')
-        backends = filter(lambda x: x['device'] == backend, result['return'])
-        self.assertLessEqual(len(backends), 1)
-        self.assertEqual(must_exist, len(backends) == 1)
-        if must_exist:
-            if node:
-                self.assertEqual(backends[0]['inserted']['node-name'], node)
-            else:
-                self.assertFalse(backends[0].has_key('inserted'))
-
     # Check whether a BlockDriverState exists
     def checkBlockDriverState(self, node, must_exist = True):
         result = self.vm.qmp('query-named-block-nodes')
@@ -58,24 +47,6 @@ class TestBlockdevDel(iotests.QMPTestCase):
         self.assertLessEqual(len(nodes), 1)
         self.assertEqual(must_exist, len(nodes) == 1)
 
-    # Add a new BlockBackend (with its attached BlockDriverState)
-    def addBlockBackend(self, backend, node):
-        file_node = '%s_file' % node
-        self.checkBlockBackend(backend, node, False)
-        self.checkBlockDriverState(node, False)
-        self.checkBlockDriverState(file_node, False)
-        opts = {'driver': iotests.imgfmt,
-                'id': backend,
-                'node-name': node,
-                'file': {'driver': 'file',
-                         'node-name': file_node,
-                         'filename': base_img}}
-        result = self.vm.qmp('blockdev-add', conv_keys = False, options = opts)
-        self.assert_qmp(result, 'return', {})
-        self.checkBlockBackend(backend, node)
-        self.checkBlockDriverState(node)
-        self.checkBlockDriverState(file_node)
-
     # Add a BlockDriverState without a BlockBackend
     def addBlockDriverState(self, node):
         file_node = '%s_file' % node
@@ -105,23 +76,6 @@ class TestBlockdevDel(iotests.QMPTestCase):
         self.assert_qmp(result, 'return', {})
         self.checkBlockDriverState(node)
 
-    # Delete a BlockBackend
-    def delBlockBackend(self, backend, node, expect_error = False,
-                        destroys_media = True):
-        self.checkBlockBackend(backend, node)
-        if node:
-            self.checkBlockDriverState(node)
-        result = self.vm.qmp('x-blockdev-del', id = backend)
-        if expect_error:
-            self.assert_qmp(result, 'error/class', 'GenericError')
-            if node:
-                self.checkBlockDriverState(node)
-        else:
-            self.assert_qmp(result, 'return', {})
-            if node:
-                self.checkBlockDriverState(node, not destroys_media)
-        self.checkBlockBackend(backend, node, must_exist = expect_error)
-
     # Delete a BlockDriverState
     def delBlockDriverState(self, node, expect_error = False):
         self.checkBlockDriverState(node)
@@ -133,51 +87,47 @@ class TestBlockdevDel(iotests.QMPTestCase):
         self.checkBlockDriverState(node, expect_error)
 
     # Add a device model
-    def addDeviceModel(self, device, backend):
+    def addDeviceModel(self, device, backend, driver = 'virtio-blk-pci'):
         result = self.vm.qmp('device_add', id = device,
-                             driver = 'virtio-blk-pci', drive = backend)
+                             driver = driver, drive = backend)
         self.assert_qmp(result, 'return', {})
 
     # Delete a device model
-    def delDeviceModel(self, device):
+    def delDeviceModel(self, device, is_virtio_blk = True):
         result = self.vm.qmp('device_del', id = device)
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('system_reset')
         self.assert_qmp(result, 'return', {})
 
-        device_path = '/machine/peripheral/%s/virtio-backend' % device
-        event = self.vm.event_wait(name="DEVICE_DELETED",
-                                   match={'data': {'path': device_path}})
-        self.assertNotEqual(event, None)
+        if is_virtio_blk:
+            device_path = '/machine/peripheral/%s/virtio-backend' % device
+            event = self.vm.event_wait(name="DEVICE_DELETED",
+                                       match={'data': {'path': device_path}})
+            self.assertNotEqual(event, None)
 
         event = self.vm.event_wait(name="DEVICE_DELETED",
                                    match={'data': {'device': device}})
         self.assertNotEqual(event, None)
 
     # Remove a BlockDriverState
-    def ejectDrive(self, backend, node, expect_error = False,
+    def ejectDrive(self, device, node, expect_error = False,
                    destroys_media = True):
-        self.checkBlockBackend(backend, node)
         self.checkBlockDriverState(node)
-        result = self.vm.qmp('eject', device = backend)
+        result = self.vm.qmp('eject', id = device)
         if expect_error:
             self.assert_qmp(result, 'error/class', 'GenericError')
             self.checkBlockDriverState(node)
-            self.checkBlockBackend(backend, node)
         else:
             self.assert_qmp(result, 'return', {})
             self.checkBlockDriverState(node, not destroys_media)
-            self.checkBlockBackend(backend, None)
 
     # Insert a BlockDriverState
-    def insertDrive(self, backend, node):
-        self.checkBlockBackend(backend, None)
+    def insertDrive(self, device, node):
         self.checkBlockDriverState(node)
         result = self.vm.qmp('x-blockdev-insert-medium',
-                             device = backend, node_name = node)
+                             id = device, node_name = node)
         self.assert_qmp(result, 'return', {})
-        self.checkBlockBackend(backend, node)
         self.checkBlockDriverState(node)
 
     # Create a snapshot using 'blockdev-snapshot-sync'
@@ -204,26 +154,23 @@ class TestBlockdevDel(iotests.QMPTestCase):
         self.checkBlockDriverState(overlay)
 
     # Create a mirror
-    def createMirror(self, backend, node, new_node):
-        self.checkBlockBackend(backend, node)
+    def createMirror(self, node, new_node):
         self.checkBlockDriverState(new_node, False)
-        opts = {'device': backend,
+        opts = {'device': node,
+                'job-id': node,
                 'target': new_img,
                 'node-name': new_node,
                 'sync': 'top',
                 'format': iotests.imgfmt}
         result = self.vm.qmp('drive-mirror', conv_keys=False, **opts)
         self.assert_qmp(result, 'return', {})
-        self.checkBlockBackend(backend, node)
         self.checkBlockDriverState(new_node)
 
     # Complete an existing block job
-    def completeBlockJob(self, backend, node_before, node_after):
-        self.checkBlockBackend(backend, node_before)
-        result = self.vm.qmp('block-job-complete', device=backend)
+    def completeBlockJob(self, id, node_before, node_after):
+        result = self.vm.qmp('block-job-complete', device=id)
         self.assert_qmp(result, 'return', {})
-        self.wait_until_completed(backend)
-        self.checkBlockBackend(backend, node_after)
+        self.wait_until_completed(id)
 
     # Add a BlkDebug node
     # Note that the purpose of this is to test the x-blockdev-del
@@ -297,89 +244,78 @@ class TestBlockdevDel(iotests.QMPTestCase):
     # The tests start here #
     ########################
 
-    def testWrongParameters(self):
-        self.addBlockBackend('drive0', 'node0')
-        result = self.vm.qmp('x-blockdev-del')
-        self.assert_qmp(result, 'error/class', 'GenericError')
-        result = self.vm.qmp('x-blockdev-del', id='drive0', node_name='node0')
-        self.assert_qmp(result, 'error/class', 'GenericError')
-        self.delBlockBackend('drive0', 'node0')
-
-    def testBlockBackend(self):
-        self.addBlockBackend('drive0', 'node0')
-        # You cannot delete a BDS that is attached to a backend
-        self.delBlockDriverState('node0', expect_error = True)
-        self.delBlockBackend('drive0', 'node0')
-
     def testBlockDriverState(self):
         self.addBlockDriverState('node0')
         # You cannot delete a file BDS directly
         self.delBlockDriverState('node0_file', expect_error = True)
         self.delBlockDriverState('node0')
 
-    def testEject(self):
-        self.addBlockBackend('drive0', 'node0')
-        self.ejectDrive('drive0', 'node0')
-        self.delBlockBackend('drive0', None)
-
     def testDeviceModel(self):
-        self.addBlockBackend('drive0', 'node0')
-        self.addDeviceModel('device0', 'drive0')
-        self.ejectDrive('drive0', 'node0', expect_error = True)
-        self.delBlockBackend('drive0', 'node0', expect_error = True)
+        self.addBlockDriverState('node0')
+        self.addDeviceModel('device0', 'node0')
+        self.ejectDrive('device0', 'node0', expect_error = True)
+        self.delBlockDriverState('node0', expect_error = True)
         self.delDeviceModel('device0')
-        self.delBlockBackend('drive0', 'node0')
+        self.delBlockDriverState('node0')
 
     def testAttachMedia(self):
         # This creates a BlockBackend and removes its media
-        self.addBlockBackend('drive0', 'node0')
-        self.ejectDrive('drive0', 'node0')
-        # This creates a new BlockDriverState and inserts it into the backend
+        self.addBlockDriverState('node0')
+        self.addDeviceModel('device0', 'node0', 'scsi-cd')
+        self.ejectDrive('device0', 'node0', destroys_media = False)
+        self.delBlockDriverState('node0')
+
+        # This creates a new BlockDriverState and inserts it into the device
         self.addBlockDriverState('node1')
-        self.insertDrive('drive0', 'node1')
-        # The backend can't be removed: the new BDS has an extra reference
-        self.delBlockBackend('drive0', 'node1', expect_error = True)
+        self.insertDrive('device0', 'node1')
+        # The node can't be removed: the new device has an extra reference
         self.delBlockDriverState('node1', expect_error = True)
         # The BDS still exists after being ejected, but now it can be removed
-        self.ejectDrive('drive0', 'node1', destroys_media = False)
+        self.ejectDrive('device0', 'node1', destroys_media = False)
         self.delBlockDriverState('node1')
-        self.delBlockBackend('drive0', None)
+        self.delDeviceModel('device0', False)
 
     def testSnapshotSync(self):
-        self.addBlockBackend('drive0', 'node0')
+        self.addBlockDriverState('node0')
+        self.addDeviceModel('device0', 'node0')
         self.createSnapshotSync('node0', 'overlay0')
         # This fails because node0 is now being used as a backing image
         self.delBlockDriverState('node0', expect_error = True)
-        # This succeeds because overlay0 only has the backend reference
-        self.delBlockBackend('drive0', 'overlay0')
-        self.checkBlockDriverState('node0', False)
+        self.delBlockDriverState('overlay0', expect_error = True)
+        # This succeeds because device0 only has the backend reference
+        self.delDeviceModel('device0')
+        # FIXME Would still be there if blockdev-snapshot-sync took a ref
+        self.checkBlockDriverState('overlay0', False)
+        self.delBlockDriverState('node0')
 
     def testSnapshot(self):
-        self.addBlockBackend('drive0', 'node0')
+        self.addBlockDriverState('node0')
+        self.addDeviceModel('device0', 'node0', 'scsi-cd')
         self.addBlockDriverStateOverlay('overlay0')
         self.createSnapshot('node0', 'overlay0')
-        self.delBlockBackend('drive0', 'overlay0', expect_error = True)
         self.delBlockDriverState('node0', expect_error = True)
         self.delBlockDriverState('overlay0', expect_error = True)
-        self.ejectDrive('drive0', 'overlay0', destroys_media = False)
-        self.delBlockBackend('drive0', None)
+        self.ejectDrive('device0', 'overlay0', destroys_media = False)
         self.delBlockDriverState('node0', expect_error = True)
         self.delBlockDriverState('overlay0')
-        self.checkBlockDriverState('node0', False)
+        self.delBlockDriverState('node0')
 
     def testMirror(self):
-        self.addBlockBackend('drive0', 'node0')
-        self.createMirror('drive0', 'node0', 'mirror0')
+        self.addBlockDriverState('node0')
+        self.addDeviceModel('device0', 'node0', 'scsi-cd')
+        self.createMirror('node0', 'mirror0')
         # The block job prevents removing the device
-        self.delBlockBackend('drive0', 'node0', expect_error = True)
         self.delBlockDriverState('node0', expect_error = True)
         self.delBlockDriverState('mirror0', expect_error = True)
-        self.wait_ready('drive0')
-        self.completeBlockJob('drive0', 'node0', 'mirror0')
+        self.wait_ready('node0')
+        self.completeBlockJob('node0', 'node0', 'mirror0')
         self.assert_no_active_block_jobs()
-        self.checkBlockDriverState('node0', False)
-        # This succeeds because the backend now points to mirror0
-        self.delBlockBackend('drive0', 'mirror0')
+        # This succeeds because the device now points to mirror0
+        self.delBlockDriverState('node0')
+        self.delBlockDriverState('mirror0', expect_error = True)
+        self.delDeviceModel('device0', False)
+        # FIXME mirror0 disappears, drive-mirror doesn't take a reference
+        #self.delBlockDriverState('mirror0')
 
     def testBlkDebug(self):
         self.addBlkDebug('debug0', 'node0')

tests/qemu-iotests/139.out

@@ -1,5 +1,5 @@
-............
+.........
 ----------------------------------------------------------------------
-Ran 12 tests
+Ran 9 tests
 
 OK

tests/qemu-iotests/141

@@ -51,7 +51,7 @@ test_blockjob()
         "{'execute': 'blockdev-add',
           'arguments': {
               'options': {
-                  'id': 'drv0',
+                  'node-name': 'drv0',
                   'driver': '$IMGFMT',
                   'file': {
                       'driver': 'file',
@@ -66,18 +66,18 @@ test_blockjob()
 
     # We want this to return an error because the block job is still running
     _send_qemu_cmd $QEMU_HANDLE \
-        "{'execute': 'x-blockdev-remove-medium',
-          'arguments': {'device': 'drv0'}}" \
+        "{'execute': 'x-blockdev-del',
+          'arguments': {'node-name': 'drv0'}}" \
         'error'
 
     _send_qemu_cmd $QEMU_HANDLE \
         "{'execute': 'block-job-cancel',
-          'arguments': {'device': 'drv0'}}" \
+          'arguments': {'device': 'job0'}}" \
         "$3"
 
     _send_qemu_cmd $QEMU_HANDLE \
         "{'execute': 'x-blockdev-del',
-          'arguments': {'id': 'drv0'}}" \
+          'arguments': {'node-name': 'drv0'}}" \
         'return'
 }
 
@@ -101,7 +101,8 @@ echo
 
 test_blockjob \
     "{'execute': 'drive-backup',
-      'arguments': {'device': 'drv0',
+      'arguments': {'job-id': 'job0',
+                    'device': 'drv0',
                     'target': '$TEST_DIR/o.$IMGFMT',
                     'format': '$IMGFMT',
                     'sync': 'none'}}" \
@@ -117,7 +118,8 @@ echo
 
 test_blockjob \
     "{'execute': 'drive-mirror',
-      'arguments': {'device': 'drv0',
+      'arguments': {'job-id': 'job0',
+                    'device': 'drv0',
                     'target': '$TEST_DIR/o.$IMGFMT',
                     'format': '$IMGFMT',
                     'sync': 'none'}}" \
@@ -134,7 +136,7 @@ echo
 
 test_blockjob \
     "{'execute': 'block-commit',
-      'arguments': {'device': 'drv0'}}" \
+      'arguments': {'job-id': 'job0', 'device': 'drv0'}}" \
     'BLOCK_JOB_READY' \
     'BLOCK_JOB_COMPLETED'
 
@@ -150,7 +152,8 @@ $QEMU_IO -c 'write 0 1M' "$TEST_DIR/m.$IMGFMT" | _filter_qemu_io
 
 test_blockjob \
     "{'execute': 'block-commit',
-      'arguments': {'device': 'drv0',
+      'arguments': {'job-id': 'job0',
+                    'device': 'drv0',
                     'top':    '$TEST_DIR/m.$IMGFMT',
                     'speed':  1}}" \
     'return' \
@@ -172,7 +175,8 @@ $QEMU_IO -c 'write 0 1M' "$TEST_DIR/b.$IMGFMT" | _filter_qemu_io
 
 test_blockjob \
     "{'execute': 'block-stream',
-      'arguments': {'device': 'drv0',
+      'arguments': {'job-id': 'job0',
+                    'device': 'drv0',
                     'speed': 1}}" \
     'return' \
     'BLOCK_JOB_CANCELLED'

tests/qemu-iotests/141.out

@@ -9,30 +9,30 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/m.
 {"return": {}}
 Formatting 'TEST_DIR/o.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT backing_fmt=IMGFMT
 {"return": {}}
-{"error": {"class": "GenericError", "desc": "Node 'drv0' is busy: block device is in use by block job: backup"}}
+{"error": {"class": "GenericError", "desc": "Node drv0 is in use"}}
 {"return": {}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_CANCELLED", "data": {"device": "drv0", "len": 1048576, "offset": 0, "speed": 0, "type": "backup"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_CANCELLED", "data": {"device": "job0", "len": 1048576, "offset": 0, "speed": 0, "type": "backup"}}
 {"return": {}}
 
 === Testing drive-mirror ===
 
 {"return": {}}
 Formatting 'TEST_DIR/o.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT backing_fmt=IMGFMT
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "drv0", "len": 0, "offset": 0, "speed": 0, "type": "mirror"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "job0", "len": 0, "offset": 0, "speed": 0, "type": "mirror"}}
 {"return": {}}
-{"error": {"class": "GenericError", "desc": "Node 'drv0' is busy: block device is in use by block job: mirror"}}
+{"error": {"class": "GenericError", "desc": "Node drv0 is in use"}}
 {"return": {}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "drv0", "len": 0, "offset": 0, "speed": 0, "type": "mirror"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "job0", "len": 0, "offset": 0, "speed": 0, "type": "mirror"}}
 {"return": {}}
 
 === Testing active block-commit ===
 
 {"return": {}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "drv0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "job0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}}
 {"return": {}}
-{"error": {"class": "GenericError", "desc": "Node 'drv0' is busy: block device is in use by block job: commit"}}
+{"error": {"class": "GenericError", "desc": "Node drv0 is in use"}}
 {"return": {}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "drv0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "job0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}}
 {"return": {}}
 
 === Testing non-active block-commit ===
@@ -41,9 +41,9 @@ wrote 1048576/1048576 bytes at offset 0
 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 {"return": {}}
 {"return": {}}
-{"error": {"class": "GenericError", "desc": "Node 'drv0' is busy: block device is in use by block job: commit"}}
+{"error": {"class": "GenericError", "desc": "Node drv0 is in use"}}
 {"return": {}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_CANCELLED", "data": {"device": "drv0", "len": 1048576, "offset": 524288, "speed": 1, "type": "commit"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_CANCELLED", "data": {"device": "job0", "len": 1048576, "offset": 524288, "speed": 1, "type": "commit"}}
 {"return": {}}
 
 === Testing block-stream ===
@@ -52,8 +52,8 @@ wrote 1048576/1048576 bytes at offset 0
 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 {"return": {}}
 {"return": {}}
-{"error": {"class": "GenericError", "desc": "Node 'drv0' is busy: block device is in use by block job: stream"}}
+{"error": {"class": "GenericError", "desc": "Node drv0 is in use"}}
 {"return": {}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_CANCELLED", "data": {"device": "drv0", "len": 1048576, "offset": 524288, "speed": 1, "type": "stream"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_CANCELLED", "data": {"device": "job0", "len": 1048576, "offset": 524288, "speed": 1, "type": "stream"}}
 {"return": {}}
 *** done

tests/qemu-iotests/158

@@ -0,0 +1,80 @@
+#!/bin/bash
+#
+# Test encrypted read/write using backing files
+#
+# Copyright (C) 2015 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# creator
+owner=berrange@redhat.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+status=1	# failure is the default!
+
+_cleanup()
+{
+	_cleanup_test_img
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt qcow2
+_supported_proto generic
+_supported_os Linux
+
+
+size=128M
+TEST_IMG_BASE=$TEST_IMG.base
+
+TEST_IMG_SAVE=$TEST_IMG
+TEST_IMG=$TEST_IMG_BASE
+echo "== create base =="
+IMGOPTS="encryption=on" _make_test_img $size
+TEST_IMG=$TEST_IMG_SAVE
+
+echo
+echo "== writing whole image =="
+echo "astrochicken" | $QEMU_IO -c "write -P 0xa 0 $size" "$TEST_IMG_BASE" | _filter_qemu_io | _filter_testdir
+
+echo
+echo "== verify pattern =="
+echo "astrochicken" | $QEMU_IO -c "read -P 0xa 0 $size" "$TEST_IMG_BASE" | _filter_qemu_io | _filter_testdir
+
+echo "== create overlay =="
+IMGOPTS="encryption=on" _make_test_img -b "$TEST_IMG_BASE" $size
+
+echo
+echo "== writing part of a cluster =="
+echo "astrochicken" | $QEMU_IO -c "write -P 0xe 0 1024" "$TEST_IMG" | _filter_qemu_io | _filter_testdir
+
+echo
+echo "== verify pattern =="
+echo "astrochicken" | $QEMU_IO -c "read -P 0xe 0 1024" "$TEST_IMG" | _filter_qemu_io | _filter_testdir
+echo
+echo "== verify pattern =="
+echo "astrochicken" | $QEMU_IO -c "read -P 0xa 1024 64512" "$TEST_IMG" | _filter_qemu_io | _filter_testdir
+
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0

tests/qemu-iotests/158.out

@@ -0,0 +1,36 @@
+QA output created by 158
+== create base ==
+Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 encryption=on
+
+== writing whole image ==
+Disk image 'TEST_DIR/t.qcow2.base' is encrypted.
+password:
+wrote 134217728/134217728 bytes at offset 0
+128 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verify pattern ==
+Disk image 'TEST_DIR/t.qcow2.base' is encrypted.
+password:
+read 134217728/134217728 bytes at offset 0
+128 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+== create overlay ==
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base encryption=on
+
+== writing part of a cluster ==
+Disk image 'TEST_DIR/t.qcow2' is encrypted.
+password:
+wrote 1024/1024 bytes at offset 0
+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verify pattern ==
+Disk image 'TEST_DIR/t.qcow2' is encrypted.
+password:
+read 1024/1024 bytes at offset 0
+1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== verify pattern ==
+Disk image 'TEST_DIR/t.qcow2' is encrypted.
+password:
+read 64512/64512 bytes at offset 1024
+63 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+*** done

tests/qemu-iotests/group

@@ -157,6 +157,7 @@
 155 rw auto
 156 rw auto quick
 157 auto
+158 rw auto quick
 159 rw auto quick
 160 rw auto quick
 162 auto quick

tests/qemu-iotests/iotests.py

@@ -139,6 +139,11 @@ class VM(qtest.QEMUQtestMachine):
             self._debug = True
         self._num_drives = 0
 
+    def add_device(self, opts):
+        self._args.append('-device')
+        self._args.append(opts)
+        return self
+
     def add_drive_raw(self, opts):
         self._args.append('-drive')
         self._args.append(opts)

ui/cocoa.m

@@ -1085,7 +1085,8 @@ QemuCocoaView *cocoaView;
     }
 
     Error *err = NULL;
-    qmp_eject([drive cStringUsingEncoding: NSASCIIStringEncoding], false, false, &err);
+    qmp_eject(true, [drive cStringUsingEncoding: NSASCIIStringEncoding],
+              false, NULL, false, false, &err);
     handleAnyDeviceErrors(err);
 }
 
@@ -1118,8 +1119,10 @@ QemuCocoaView *cocoaView;
         }
 
         Error *err = NULL;
-        qmp_blockdev_change_medium([drive cStringUsingEncoding:
+        qmp_blockdev_change_medium(true,
+                                   [drive cStringUsingEncoding:
                                           NSASCIIStringEncoding],
+                                   false, NULL,
                                    [file cStringUsingEncoding:
                                          NSASCIIStringEncoding],
                                    true, "raw",