Block pull request

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Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Block pull request

# gpg: Signature made Fri 14 Feb 2014 17:26:30 GMT using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  block: Open by reference will try device then node_name.
  block: Relax bdrv_lookup_bs constraints.
  blockdev: Fix wrong usage of QDECREF causing snapshoted quorum to crash on close.
  block: mirror - use local_err to avoid NULL errp
  qemu-iotests: Don't run 005 on vmdk split formats
  block: qemu-iotests - add vhdx log replay tests for qemu-img
  block: qemu-iotests - fix test 070 (vhdx)
  block: Don't throw away errno via error_setg
  block: Add notes to iSCSI's .bdrv_open and .bdrv_reopen_prepare
  blockdev: Remove 'type' parameter from blockdev_init()
  sdhci: Drop unnecessary #include

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2014-02-15 16:15:52 +00:00
commit 44e3a39f30
10 changed files with 115 additions and 50 deletions

36
block.c
View File

@ -796,6 +796,13 @@ static int bdrv_assign_node_name(BlockDriverState *bs,
return -EINVAL;
}
/* takes care of avoiding namespaces collisions */
if (bdrv_find(node_name)) {
error_setg(errp, "node-name=%s is conflicting with a device id",
node_name);
return -EINVAL;
}
/* takes care of avoiding duplicates node names */
if (bdrv_find_node(node_name)) {
error_setg(errp, "Duplicate node name");
@ -977,9 +984,8 @@ int bdrv_file_open(BlockDriverState **pbs, const char *filename,
}
QDECREF(options);
bs = bdrv_find(reference);
bs = bdrv_lookup_bs(reference, reference, errp);
if (!bs) {
error_setg(errp, "Cannot find block device '%s'", reference);
return -ENODEV;
}
bdrv_ref(bs);
@ -3574,30 +3580,26 @@ BlockDriverState *bdrv_lookup_bs(const char *device,
{
BlockDriverState *bs = NULL;
if ((!device && !node_name) || (device && node_name)) {
error_setg(errp, "Use either device or node-name but not both");
return NULL;
}
if (device) {
bs = bdrv_find(device);
if (!bs) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
return NULL;
if (bs) {
return bs;
}
return bs;
}
bs = bdrv_find_node(node_name);
if (node_name) {
bs = bdrv_find_node(node_name);
if (!bs) {
error_set(errp, QERR_DEVICE_NOT_FOUND, node_name);
return NULL;
if (bs) {
return bs;
}
}
return bs;
error_setg(errp, "Cannot find device=%s nor node_name=%s",
device ? device : "",
node_name ? node_name : "");
return NULL;
}
BlockDriverState *bdrv_next(BlockDriverState *bs)

View File

@ -1099,6 +1099,10 @@ fail:
/*
* We support iscsi url's on the form
* iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun>
*
* Note: flags are currently not used by iscsi_open. If this function
* is changed such that flags are used, please examine iscsi_reopen_prepare()
* to see if needs to be changed as well.
*/
static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
Error **errp)
@ -1336,11 +1340,13 @@ static int iscsi_refresh_limits(BlockDriverState *bs)
return 0;
}
/* We have nothing to do for iSCSI reopen, stub just returns
* success */
/* Since iscsi_open() ignores bdrv_flags, there is nothing to do here in
* prepare. Note that this will not re-establish a connection with an iSCSI
* target - it is effectively a NOP. */
static int iscsi_reopen_prepare(BDRVReopenState *state,
BlockReopenQueue *queue, Error **errp)
{
/* NOP */
return 0;
}

View File

@ -633,6 +633,8 @@ void commit_active_start(BlockDriverState *bs, BlockDriverState *base,
{
int64_t length, base_length;
int orig_base_flags;
int ret;
Error *local_err = NULL;
orig_base_flags = bdrv_get_flags(base);
@ -642,19 +644,23 @@ void commit_active_start(BlockDriverState *bs, BlockDriverState *base,
length = bdrv_getlength(bs);
if (length < 0) {
error_setg(errp, "Unable to determine length of %s", bs->filename);
error_setg_errno(errp, -length,
"Unable to determine length of %s", bs->filename);
goto error_restore_flags;
}
base_length = bdrv_getlength(base);
if (base_length < 0) {
error_setg(errp, "Unable to determine length of %s", base->filename);
error_setg_errno(errp, -base_length,
"Unable to determine length of %s", base->filename);
goto error_restore_flags;
}
if (length > base_length) {
if (bdrv_truncate(base, length) < 0) {
error_setg(errp, "Top image %s is larger than base image %s, and "
ret = bdrv_truncate(base, length);
if (ret < 0) {
error_setg_errno(errp, -ret,
"Top image %s is larger than base image %s, and "
"resize of base image failed",
bs->filename, base->filename);
goto error_restore_flags;
@ -663,9 +669,10 @@ void commit_active_start(BlockDriverState *bs, BlockDriverState *base,
bdrv_ref(base);
mirror_start_job(bs, base, speed, 0, 0,
on_error, on_error, cb, opaque, errp,
on_error, on_error, cb, opaque, &local_err,
&commit_active_job_driver, false, base);
if (error_is_set(errp)) {
if (error_is_set(&local_err)) {
error_propagate(errp, local_err);
goto error_restore_flags;
}

View File

@ -606,7 +606,8 @@ int qcow2_snapshot_delete(BlockDriverState *bs,
s->nb_snapshots--;
ret = qcow2_write_snapshots(bs);
if (ret < 0) {
error_setg(errp, "Failed to remove snapshot from snapshot list");
error_setg_errno(errp, -ret,
"Failed to remove snapshot from snapshot list");
return ret;
}
@ -624,7 +625,7 @@ int qcow2_snapshot_delete(BlockDriverState *bs,
ret = qcow2_update_snapshot_refcount(bs, sn.l1_table_offset,
sn.l1_size, -1);
if (ret < 0) {
error_setg(errp, "Failed to free the cluster and L1 table");
error_setg_errno(errp, -ret, "Failed to free the cluster and L1 table");
return ret;
}
qcow2_free_clusters(bs, sn.l1_table_offset, sn.l1_size * sizeof(uint64_t),
@ -633,7 +634,8 @@ int qcow2_snapshot_delete(BlockDriverState *bs,
/* must update the copied flag on the current cluster offsets */
ret = qcow2_update_snapshot_refcount(bs, s->l1_table_offset, s->l1_size, 0);
if (ret < 0) {
error_setg(errp, "Failed to update snapshot status in disk");
error_setg_errno(errp, -ret,
"Failed to update snapshot status in disk");
return ret;
}

View File

@ -1502,7 +1502,7 @@ static int vmdk_create_extent(const char *filename, int64_t filesize,
if (flat) {
ret = bdrv_truncate(bs, filesize);
if (ret < 0) {
error_setg(errp, "Could not truncate file");
error_setg_errno(errp, -ret, "Could not truncate file");
}
goto exit;
}
@ -1562,7 +1562,7 @@ static int vmdk_create_extent(const char *filename, int64_t filesize,
ret = bdrv_truncate(bs, le64_to_cpu(header.grain_offset) << 9);
if (ret < 0) {
error_setg(errp, "Could not truncate file");
error_setg_errno(errp, -ret, "Could not truncate file");
goto exit;
}
@ -1846,7 +1846,7 @@ static int vmdk_create(const char *filename, QEMUOptionParameter *options,
if (desc_offset == 0) {
ret = bdrv_truncate(new_bs, desc_len);
if (ret < 0) {
error_setg(errp, "Could not truncate file");
error_setg_errno(errp, -ret, "Could not truncate file");
}
}
exit:

View File

@ -308,7 +308,6 @@ typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType;
/* Takes the ownership of bs_opts */
static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
BlockInterfaceType type,
Error **errp)
{
const char *buf;
@ -437,11 +436,6 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
on_write_error = BLOCKDEV_ON_ERROR_ENOSPC;
if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) {
error_setg(errp, "werror is not supported by this bus type");
goto early_err;
}
on_write_error = parse_block_error_action(buf, 0, &error);
if (error_is_set(&error)) {
error_propagate(errp, error);
@ -451,11 +445,6 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
on_read_error = BLOCKDEV_ON_ERROR_REPORT;
if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) {
error_report("rerror is not supported by this bus type");
goto early_err;
}
on_read_error = parse_block_error_action(buf, 1, &error);
if (error_is_set(&error)) {
error_propagate(errp, error);
@ -463,13 +452,18 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
}
}
if (bdrv_find_node(qemu_opts_id(opts))) {
error_setg(errp, "device id=%s is conflicting with a node-name",
qemu_opts_id(opts));
goto early_err;
}
/* init */
dinfo = g_malloc0(sizeof(*dinfo));
dinfo->id = g_strdup(qemu_opts_id(opts));
dinfo->bdrv = bdrv_new(dinfo->id);
dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0;
dinfo->bdrv->read_only = ro;
dinfo->type = type;
dinfo->refcount = 1;
if (serial != NULL) {
dinfo->serial = g_strdup(serial);
@ -608,6 +602,14 @@ QemuOptsList qemu_legacy_drive_opts = {
.name = "read-only",
.type = QEMU_OPT_BOOL,
.help = "open drive file as read-only",
},{
.name = "rerror",
.type = QEMU_OPT_STRING,
.help = "read error action",
},{
.name = "werror",
.type = QEMU_OPT_STRING,
.help = "write error action",
},{
.name = "copy-on-read",
.type = QEMU_OPT_BOOL,
@ -629,6 +631,7 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
int cyls, heads, secs, translation;
int max_devs, bus_id, unit_id, index;
const char *devaddr;
const char *werror, *rerror;
bool read_only = false;
bool copy_on_read;
const char *filename;
@ -872,8 +875,29 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
filename = qemu_opt_get(legacy_opts, "file");
/* Check werror/rerror compatibility with if=... */
werror = qemu_opt_get(legacy_opts, "werror");
if (werror != NULL) {
if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO &&
type != IF_NONE) {
error_report("werror is not supported by this bus type");
goto fail;
}
qdict_put(bs_opts, "werror", qstring_from_str(werror));
}
rerror = qemu_opt_get(legacy_opts, "rerror");
if (rerror != NULL) {
if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI &&
type != IF_NONE) {
error_report("rerror is not supported by this bus type");
goto fail;
}
qdict_put(bs_opts, "rerror", qstring_from_str(rerror));
}
/* Actual block device init: Functionality shared with blockdev-add */
dinfo = blockdev_init(filename, bs_opts, type, &local_err);
dinfo = blockdev_init(filename, bs_opts, &local_err);
if (dinfo == NULL) {
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
@ -893,6 +917,7 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
dinfo->secs = secs;
dinfo->trans = translation;
dinfo->type = type;
dinfo->bus = bus_id;
dinfo->unit = unit_id;
dinfo->devaddr = devaddr;
@ -1310,8 +1335,6 @@ static void external_snapshot_prepare(BlkTransactionState *common,
if (ret != 0) {
error_propagate(errp, local_err);
}
QDECREF(options);
}
static void external_snapshot_commit(BlkTransactionState *common)
@ -2276,7 +2299,7 @@ void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
qdict_flatten(qdict);
blockdev_init(NULL, qdict, IF_NONE, &local_err);
blockdev_init(NULL, qdict, &local_err);
if (error_is_set(&local_err)) {
error_propagate(errp, local_err);
goto fail;

View File

@ -26,7 +26,6 @@
#include "sysemu/blockdev.h"
#include "sysemu/dma.h"
#include "qemu/timer.h"
#include "block/block_int.h"
#include "qemu/bitops.h"
#include "sdhci.h"

View File

@ -44,6 +44,8 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
_supported_fmt generic
_supported_proto generic
_supported_os Linux
_unsupported_imgopts "subformat=twoGbMaxExtentFlat" \
"subformat=twoGbMaxExtentSparse"
# vpc is limited to 127GB, so we can't test it here
if [ "$IMGFMT" = "vpc" ]; then

View File

@ -56,11 +56,22 @@ _use_sample_img iotest-dirtylog-10G-4M.vhdx.bz2
echo
echo "=== Verify open image read-only fails, due to dirty log ==="
$QEMU_IO -r -c "read -pP 0xa5 0 18M" "$TEST_IMG" 2>&1 | grep -o "Permission denied"
$QEMU_IO -r -c "read -pP 0xa5 0 18M" "$TEST_IMG" 2>&1 | _filter_testdir \
| _filter_qemu_io
echo "=== Verify open image replays log ==="
$QEMU_IO -c "read -pP 0xa5 0 18M" "$TEST_IMG" | _filter_qemu_io
# extract fresh sample image again
_use_sample_img iotest-dirtylog-10G-4M.vhdx.bz2
echo "=== Verify qemu-img check -r all replays log ==="
$QEMU_IMG check -r all "$TEST_IMG" 2>&1 | _filter_testdir | _filter_qemu
echo "=== Verify open image read-only succeeds after log replay ==="
$QEMU_IO -r -c "read -pP 0xa5 0 18M" "$TEST_IMG" 2>&1 | _filter_testdir \
| _filter_qemu_io
# success, all done
echo "*** done"
rm -f $seq.full

View File

@ -1,8 +1,21 @@
QA output created by 070
=== Verify open image read-only fails, due to dirty log ===
Permission denied
qemu-io: can't open device TEST_DIR/iotest-dirtylog-10G-4M.vhdx: VHDX image file 'TEST_DIR/iotest-dirtylog-10G-4M.vhdx' opened read-only, but contains a log that needs to be replayed. To replay the log, execute:
qemu-img check -r all 'TEST_DIR/iotest-dirtylog-10G-4M.vhdx': Operation not permitted
no file open, try 'help open'
=== Verify open image replays log ===
read 18874368/18874368 bytes at offset 0
18 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
=== Verify qemu-img check -r all replays log ===
The following inconsistencies were found and repaired:
0 leaked clusters
1 corruptions
Double checking the fixed image now...
No errors were found on the image.
=== Verify open image read-only succeeds after log replay ===
read 18874368/18874368 bytes at offset 0
18 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
*** done