1031 lines
33 KiB
C
1031 lines
33 KiB
C
/*
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* Block layer qmp and info dump related functions
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu/cutils.h"
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#include "block/qapi.h"
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#include "block/block_int.h"
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#include "block/dirty-bitmap.h"
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#include "block/throttle-groups.h"
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#include "block/write-threshold.h"
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#include "qapi/error.h"
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#include "qapi/qapi-commands-block-core.h"
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#include "qapi/qobject-output-visitor.h"
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#include "qapi/qapi-visit-block-core.h"
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#include "qapi/qmp/qbool.h"
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#include "qapi/qmp/qdict.h"
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#include "qapi/qmp/qlist.h"
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#include "qapi/qmp/qnum.h"
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#include "qapi/qmp/qstring.h"
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#include "qemu/qemu-print.h"
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#include "sysemu/block-backend.h"
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#include "qemu/cutils.h"
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BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk,
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BlockDriverState *bs,
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bool flat,
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Error **errp)
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{
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ImageInfo **p_image_info;
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ImageInfo *backing_info;
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BlockDriverState *bs0, *backing;
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BlockDeviceInfo *info;
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ERRP_GUARD();
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if (!bs->drv) {
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error_setg(errp, "Block device %s is ejected", bs->node_name);
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return NULL;
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}
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bdrv_refresh_filename(bs);
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info = g_malloc0(sizeof(*info));
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info->file = g_strdup(bs->filename);
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info->ro = bdrv_is_read_only(bs);
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info->drv = g_strdup(bs->drv->format_name);
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info->encrypted = bs->encrypted;
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info->cache = g_new(BlockdevCacheInfo, 1);
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*info->cache = (BlockdevCacheInfo) {
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.writeback = blk ? blk_enable_write_cache(blk) : true,
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.direct = !!(bs->open_flags & BDRV_O_NOCACHE),
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.no_flush = !!(bs->open_flags & BDRV_O_NO_FLUSH),
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};
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if (bs->node_name[0]) {
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info->node_name = g_strdup(bs->node_name);
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}
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backing = bdrv_cow_bs(bs);
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if (backing) {
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info->backing_file = g_strdup(backing->filename);
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}
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if (!QLIST_EMPTY(&bs->dirty_bitmaps)) {
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info->has_dirty_bitmaps = true;
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info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs);
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}
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info->detect_zeroes = bs->detect_zeroes;
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if (blk && blk_get_public(blk)->throttle_group_member.throttle_state) {
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ThrottleConfig cfg;
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BlockBackendPublic *blkp = blk_get_public(blk);
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throttle_group_get_config(&blkp->throttle_group_member, &cfg);
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info->bps = cfg.buckets[THROTTLE_BPS_TOTAL].avg;
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info->bps_rd = cfg.buckets[THROTTLE_BPS_READ].avg;
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info->bps_wr = cfg.buckets[THROTTLE_BPS_WRITE].avg;
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info->iops = cfg.buckets[THROTTLE_OPS_TOTAL].avg;
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info->iops_rd = cfg.buckets[THROTTLE_OPS_READ].avg;
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info->iops_wr = cfg.buckets[THROTTLE_OPS_WRITE].avg;
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info->has_bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max;
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info->bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max;
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info->has_bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max;
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info->bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max;
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info->has_bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max;
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info->bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max;
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info->has_iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max;
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info->iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max;
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info->has_iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max;
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info->iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max;
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info->has_iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max;
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info->iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max;
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info->has_bps_max_length = info->has_bps_max;
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info->bps_max_length =
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cfg.buckets[THROTTLE_BPS_TOTAL].burst_length;
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info->has_bps_rd_max_length = info->has_bps_rd_max;
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info->bps_rd_max_length =
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cfg.buckets[THROTTLE_BPS_READ].burst_length;
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info->has_bps_wr_max_length = info->has_bps_wr_max;
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info->bps_wr_max_length =
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cfg.buckets[THROTTLE_BPS_WRITE].burst_length;
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info->has_iops_max_length = info->has_iops_max;
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info->iops_max_length =
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cfg.buckets[THROTTLE_OPS_TOTAL].burst_length;
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info->has_iops_rd_max_length = info->has_iops_rd_max;
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info->iops_rd_max_length =
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cfg.buckets[THROTTLE_OPS_READ].burst_length;
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info->has_iops_wr_max_length = info->has_iops_wr_max;
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info->iops_wr_max_length =
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cfg.buckets[THROTTLE_OPS_WRITE].burst_length;
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info->has_iops_size = cfg.op_size;
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info->iops_size = cfg.op_size;
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info->group =
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g_strdup(throttle_group_get_name(&blkp->throttle_group_member));
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}
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info->write_threshold = bdrv_write_threshold_get(bs);
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bs0 = bs;
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p_image_info = &info->image;
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info->backing_file_depth = 0;
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/*
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* Skip automatically inserted nodes that the user isn't aware of for
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* query-block (blk != NULL), but not for query-named-block-nodes
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*/
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bdrv_query_image_info(bs0, p_image_info, flat, blk != NULL, errp);
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if (*errp) {
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qapi_free_BlockDeviceInfo(info);
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return NULL;
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}
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backing_info = info->image->backing_image;
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while (backing_info) {
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info->backing_file_depth++;
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backing_info = backing_info->backing_image;
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}
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return info;
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}
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/*
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* Returns 0 on success, with *p_list either set to describe snapshot
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* information, or NULL because there are no snapshots. Returns -errno on
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* error, with *p_list untouched.
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*/
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int bdrv_query_snapshot_info_list(BlockDriverState *bs,
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SnapshotInfoList **p_list,
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Error **errp)
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{
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int i, sn_count;
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QEMUSnapshotInfo *sn_tab = NULL;
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SnapshotInfoList *head = NULL, **tail = &head;
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SnapshotInfo *info;
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sn_count = bdrv_snapshot_list(bs, &sn_tab);
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if (sn_count < 0) {
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const char *dev = bdrv_get_device_name(bs);
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switch (sn_count) {
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case -ENOMEDIUM:
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error_setg(errp, "Device '%s' is not inserted", dev);
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break;
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case -ENOTSUP:
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error_setg(errp,
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"Device '%s' does not support internal snapshots",
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dev);
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break;
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default:
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error_setg_errno(errp, -sn_count,
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"Can't list snapshots of device '%s'", dev);
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break;
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}
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return sn_count;
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}
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for (i = 0; i < sn_count; i++) {
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info = g_new0(SnapshotInfo, 1);
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info->id = g_strdup(sn_tab[i].id_str);
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info->name = g_strdup(sn_tab[i].name);
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info->vm_state_size = sn_tab[i].vm_state_size;
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info->date_sec = sn_tab[i].date_sec;
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info->date_nsec = sn_tab[i].date_nsec;
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info->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000;
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info->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000;
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info->icount = sn_tab[i].icount;
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info->has_icount = sn_tab[i].icount != -1ULL;
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QAPI_LIST_APPEND(tail, info);
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}
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g_free(sn_tab);
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*p_list = head;
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return 0;
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}
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/**
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* Helper function for other query info functions. Store information about @bs
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* in @info, setting @errp on error.
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*/
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static void bdrv_do_query_node_info(BlockDriverState *bs,
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BlockNodeInfo *info,
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Error **errp)
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{
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int64_t size;
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const char *backing_filename;
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BlockDriverInfo bdi;
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int ret;
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Error *err = NULL;
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aio_context_acquire(bdrv_get_aio_context(bs));
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size = bdrv_getlength(bs);
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if (size < 0) {
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error_setg_errno(errp, -size, "Can't get image size '%s'",
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bs->exact_filename);
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goto out;
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}
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bdrv_refresh_filename(bs);
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info->filename = g_strdup(bs->filename);
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info->format = g_strdup(bdrv_get_format_name(bs));
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info->virtual_size = size;
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info->actual_size = bdrv_get_allocated_file_size(bs);
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info->has_actual_size = info->actual_size >= 0;
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if (bs->encrypted) {
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info->encrypted = true;
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info->has_encrypted = true;
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}
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if (bdrv_get_info(bs, &bdi) >= 0) {
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if (bdi.cluster_size != 0) {
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info->cluster_size = bdi.cluster_size;
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info->has_cluster_size = true;
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}
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info->dirty_flag = bdi.is_dirty;
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info->has_dirty_flag = true;
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}
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info->format_specific = bdrv_get_specific_info(bs, &err);
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if (err) {
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error_propagate(errp, err);
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goto out;
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}
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backing_filename = bs->backing_file;
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if (backing_filename[0] != '\0') {
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char *backing_filename2;
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info->backing_filename = g_strdup(backing_filename);
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backing_filename2 = bdrv_get_full_backing_filename(bs, NULL);
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/* Always report the full_backing_filename if present, even if it's the
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* same as backing_filename. That they are same is useful info. */
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if (backing_filename2) {
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info->full_backing_filename = g_strdup(backing_filename2);
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}
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if (bs->backing_format[0]) {
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info->backing_filename_format = g_strdup(bs->backing_format);
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}
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g_free(backing_filename2);
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}
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ret = bdrv_query_snapshot_info_list(bs, &info->snapshots, &err);
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switch (ret) {
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case 0:
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if (info->snapshots) {
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info->has_snapshots = true;
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}
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break;
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/* recoverable error */
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case -ENOMEDIUM:
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case -ENOTSUP:
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error_free(err);
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break;
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default:
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error_propagate(errp, err);
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goto out;
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}
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out:
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aio_context_release(bdrv_get_aio_context(bs));
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}
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/**
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* bdrv_query_block_node_info:
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* @bs: block node to examine
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* @p_info: location to store node information
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* @errp: location to store error information
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*
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* Store image information about @bs in @p_info.
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*
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* @p_info will be set only on success. On error, store error in @errp.
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*/
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void bdrv_query_block_node_info(BlockDriverState *bs,
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BlockNodeInfo **p_info,
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Error **errp)
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{
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BlockNodeInfo *info;
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ERRP_GUARD();
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info = g_new0(BlockNodeInfo, 1);
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bdrv_do_query_node_info(bs, info, errp);
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if (*errp) {
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qapi_free_BlockNodeInfo(info);
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return;
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}
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*p_info = info;
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}
|
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|
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/**
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* bdrv_query_image_info:
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* @bs: block node to examine
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* @p_info: location to store image information
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* @flat: skip backing node information
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* @skip_implicit_filters: skip implicit filters in the backing chain
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* @errp: location to store error information
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*
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* Store image information in @p_info, potentially recursively covering the
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* backing chain.
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*
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* If @flat is true, do not query backing image information, i.e.
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* (*p_info)->has_backing_image will be set to false and
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* (*p_info)->backing_image to NULL even when the image does in fact have a
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* backing image.
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*
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* If @skip_implicit_filters is true, implicit filter nodes in the backing chain
|
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* will be skipped when querying backing image information.
|
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* (@skip_implicit_filters is ignored when @flat is true.)
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*
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* @p_info will be set only on success. On error, store error in @errp.
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*/
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void bdrv_query_image_info(BlockDriverState *bs,
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ImageInfo **p_info,
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bool flat,
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bool skip_implicit_filters,
|
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Error **errp)
|
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{
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ImageInfo *info;
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ERRP_GUARD();
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|
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info = g_new0(ImageInfo, 1);
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bdrv_do_query_node_info(bs, qapi_ImageInfo_base(info), errp);
|
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if (*errp) {
|
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goto fail;
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}
|
|
|
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if (!flat) {
|
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BlockDriverState *backing;
|
|
|
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/*
|
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* Use any filtered child here (for backwards compatibility to when
|
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* we always took bs->backing, which might be any filtered child).
|
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*/
|
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backing = bdrv_filter_or_cow_bs(bs);
|
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if (skip_implicit_filters) {
|
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backing = bdrv_skip_implicit_filters(backing);
|
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}
|
|
|
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if (backing) {
|
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bdrv_query_image_info(backing, &info->backing_image, false,
|
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skip_implicit_filters, errp);
|
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if (*errp) {
|
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goto fail;
|
|
}
|
|
}
|
|
}
|
|
|
|
*p_info = info;
|
|
return;
|
|
|
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fail:
|
|
assert(*errp);
|
|
qapi_free_ImageInfo(info);
|
|
}
|
|
|
|
/**
|
|
* bdrv_query_block_graph_info:
|
|
* @bs: root node to start from
|
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* @p_info: location to store image information
|
|
* @errp: location to store error information
|
|
*
|
|
* Store image information about the graph starting from @bs in @p_info.
|
|
*
|
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* @p_info will be set only on success. On error, store error in @errp.
|
|
*/
|
|
void bdrv_query_block_graph_info(BlockDriverState *bs,
|
|
BlockGraphInfo **p_info,
|
|
Error **errp)
|
|
{
|
|
BlockGraphInfo *info;
|
|
BlockChildInfoList **children_list_tail;
|
|
BdrvChild *c;
|
|
ERRP_GUARD();
|
|
|
|
info = g_new0(BlockGraphInfo, 1);
|
|
bdrv_do_query_node_info(bs, qapi_BlockGraphInfo_base(info), errp);
|
|
if (*errp) {
|
|
goto fail;
|
|
}
|
|
|
|
children_list_tail = &info->children;
|
|
|
|
QLIST_FOREACH(c, &bs->children, next) {
|
|
BlockChildInfo *c_info;
|
|
|
|
c_info = g_new0(BlockChildInfo, 1);
|
|
QAPI_LIST_APPEND(children_list_tail, c_info);
|
|
|
|
c_info->name = g_strdup(c->name);
|
|
bdrv_query_block_graph_info(c->bs, &c_info->info, errp);
|
|
if (*errp) {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
*p_info = info;
|
|
return;
|
|
|
|
fail:
|
|
assert(*errp != NULL);
|
|
qapi_free_BlockGraphInfo(info);
|
|
}
|
|
|
|
/* @p_info will be set only on success. */
|
|
static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info,
|
|
Error **errp)
|
|
{
|
|
BlockInfo *info = g_malloc0(sizeof(*info));
|
|
BlockDriverState *bs = blk_bs(blk);
|
|
char *qdev;
|
|
|
|
/* Skip automatically inserted nodes that the user isn't aware of */
|
|
bs = bdrv_skip_implicit_filters(bs);
|
|
|
|
info->device = g_strdup(blk_name(blk));
|
|
info->type = g_strdup("unknown");
|
|
info->locked = blk_dev_is_medium_locked(blk);
|
|
info->removable = blk_dev_has_removable_media(blk);
|
|
|
|
qdev = blk_get_attached_dev_id(blk);
|
|
if (qdev && *qdev) {
|
|
info->qdev = qdev;
|
|
} else {
|
|
g_free(qdev);
|
|
}
|
|
|
|
if (blk_dev_has_tray(blk)) {
|
|
info->has_tray_open = true;
|
|
info->tray_open = blk_dev_is_tray_open(blk);
|
|
}
|
|
|
|
if (blk_iostatus_is_enabled(blk)) {
|
|
info->has_io_status = true;
|
|
info->io_status = blk_iostatus(blk);
|
|
}
|
|
|
|
if (bs && bs->drv) {
|
|
info->inserted = bdrv_block_device_info(blk, bs, false, errp);
|
|
if (info->inserted == NULL) {
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
*p_info = info;
|
|
return;
|
|
|
|
err:
|
|
qapi_free_BlockInfo(info);
|
|
}
|
|
|
|
static uint64List *uint64_list(uint64_t *list, int size)
|
|
{
|
|
int i;
|
|
uint64List *out_list = NULL;
|
|
uint64List **tail = &out_list;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
QAPI_LIST_APPEND(tail, list[i]);
|
|
}
|
|
|
|
return out_list;
|
|
}
|
|
|
|
static BlockLatencyHistogramInfo *
|
|
bdrv_latency_histogram_stats(BlockLatencyHistogram *hist)
|
|
{
|
|
BlockLatencyHistogramInfo *info;
|
|
|
|
if (!hist->bins) {
|
|
return NULL;
|
|
}
|
|
|
|
info = g_new0(BlockLatencyHistogramInfo, 1);
|
|
info->boundaries = uint64_list(hist->boundaries, hist->nbins - 1);
|
|
info->bins = uint64_list(hist->bins, hist->nbins);
|
|
return info;
|
|
}
|
|
|
|
static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk)
|
|
{
|
|
BlockAcctStats *stats = blk_get_stats(blk);
|
|
BlockAcctTimedStats *ts = NULL;
|
|
BlockLatencyHistogram *hgram;
|
|
|
|
ds->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ];
|
|
ds->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE];
|
|
ds->unmap_bytes = stats->nr_bytes[BLOCK_ACCT_UNMAP];
|
|
ds->rd_operations = stats->nr_ops[BLOCK_ACCT_READ];
|
|
ds->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE];
|
|
ds->unmap_operations = stats->nr_ops[BLOCK_ACCT_UNMAP];
|
|
|
|
ds->failed_rd_operations = stats->failed_ops[BLOCK_ACCT_READ];
|
|
ds->failed_wr_operations = stats->failed_ops[BLOCK_ACCT_WRITE];
|
|
ds->failed_flush_operations = stats->failed_ops[BLOCK_ACCT_FLUSH];
|
|
ds->failed_unmap_operations = stats->failed_ops[BLOCK_ACCT_UNMAP];
|
|
|
|
ds->invalid_rd_operations = stats->invalid_ops[BLOCK_ACCT_READ];
|
|
ds->invalid_wr_operations = stats->invalid_ops[BLOCK_ACCT_WRITE];
|
|
ds->invalid_flush_operations =
|
|
stats->invalid_ops[BLOCK_ACCT_FLUSH];
|
|
ds->invalid_unmap_operations = stats->invalid_ops[BLOCK_ACCT_UNMAP];
|
|
|
|
ds->rd_merged = stats->merged[BLOCK_ACCT_READ];
|
|
ds->wr_merged = stats->merged[BLOCK_ACCT_WRITE];
|
|
ds->unmap_merged = stats->merged[BLOCK_ACCT_UNMAP];
|
|
ds->flush_operations = stats->nr_ops[BLOCK_ACCT_FLUSH];
|
|
ds->wr_total_time_ns = stats->total_time_ns[BLOCK_ACCT_WRITE];
|
|
ds->rd_total_time_ns = stats->total_time_ns[BLOCK_ACCT_READ];
|
|
ds->flush_total_time_ns = stats->total_time_ns[BLOCK_ACCT_FLUSH];
|
|
ds->unmap_total_time_ns = stats->total_time_ns[BLOCK_ACCT_UNMAP];
|
|
|
|
ds->has_idle_time_ns = stats->last_access_time_ns > 0;
|
|
if (ds->has_idle_time_ns) {
|
|
ds->idle_time_ns = block_acct_idle_time_ns(stats);
|
|
}
|
|
|
|
ds->account_invalid = stats->account_invalid;
|
|
ds->account_failed = stats->account_failed;
|
|
|
|
while ((ts = block_acct_interval_next(stats, ts))) {
|
|
BlockDeviceTimedStats *dev_stats = g_malloc0(sizeof(*dev_stats));
|
|
|
|
TimedAverage *rd = &ts->latency[BLOCK_ACCT_READ];
|
|
TimedAverage *wr = &ts->latency[BLOCK_ACCT_WRITE];
|
|
TimedAverage *fl = &ts->latency[BLOCK_ACCT_FLUSH];
|
|
|
|
dev_stats->interval_length = ts->interval_length;
|
|
|
|
dev_stats->min_rd_latency_ns = timed_average_min(rd);
|
|
dev_stats->max_rd_latency_ns = timed_average_max(rd);
|
|
dev_stats->avg_rd_latency_ns = timed_average_avg(rd);
|
|
|
|
dev_stats->min_wr_latency_ns = timed_average_min(wr);
|
|
dev_stats->max_wr_latency_ns = timed_average_max(wr);
|
|
dev_stats->avg_wr_latency_ns = timed_average_avg(wr);
|
|
|
|
dev_stats->min_flush_latency_ns = timed_average_min(fl);
|
|
dev_stats->max_flush_latency_ns = timed_average_max(fl);
|
|
dev_stats->avg_flush_latency_ns = timed_average_avg(fl);
|
|
|
|
dev_stats->avg_rd_queue_depth =
|
|
block_acct_queue_depth(ts, BLOCK_ACCT_READ);
|
|
dev_stats->avg_wr_queue_depth =
|
|
block_acct_queue_depth(ts, BLOCK_ACCT_WRITE);
|
|
|
|
QAPI_LIST_PREPEND(ds->timed_stats, dev_stats);
|
|
}
|
|
|
|
hgram = stats->latency_histogram;
|
|
ds->rd_latency_histogram
|
|
= bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_READ]);
|
|
ds->wr_latency_histogram
|
|
= bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_WRITE]);
|
|
ds->flush_latency_histogram
|
|
= bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_FLUSH]);
|
|
}
|
|
|
|
static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs,
|
|
bool blk_level)
|
|
{
|
|
BdrvChild *parent_child;
|
|
BlockDriverState *filter_or_cow_bs;
|
|
BlockStats *s = NULL;
|
|
|
|
s = g_malloc0(sizeof(*s));
|
|
s->stats = g_malloc0(sizeof(*s->stats));
|
|
|
|
if (!bs) {
|
|
return s;
|
|
}
|
|
|
|
/* Skip automatically inserted nodes that the user isn't aware of in
|
|
* a BlockBackend-level command. Stay at the exact node for a node-level
|
|
* command. */
|
|
if (blk_level) {
|
|
bs = bdrv_skip_implicit_filters(bs);
|
|
}
|
|
|
|
if (bdrv_get_node_name(bs)[0]) {
|
|
s->node_name = g_strdup(bdrv_get_node_name(bs));
|
|
}
|
|
|
|
s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset);
|
|
|
|
s->driver_specific = bdrv_get_specific_stats(bs);
|
|
|
|
parent_child = bdrv_primary_child(bs);
|
|
if (!parent_child ||
|
|
!(parent_child->role & (BDRV_CHILD_DATA | BDRV_CHILD_FILTERED)))
|
|
{
|
|
BdrvChild *c;
|
|
|
|
/*
|
|
* Look for a unique data-storing child. We do not need to look for
|
|
* filtered children, as there would be only one and it would have been
|
|
* the primary child.
|
|
*/
|
|
parent_child = NULL;
|
|
QLIST_FOREACH(c, &bs->children, next) {
|
|
if (c->role & BDRV_CHILD_DATA) {
|
|
if (parent_child) {
|
|
/*
|
|
* There are multiple data-storing children and we cannot
|
|
* choose between them.
|
|
*/
|
|
parent_child = NULL;
|
|
break;
|
|
}
|
|
parent_child = c;
|
|
}
|
|
}
|
|
}
|
|
if (parent_child) {
|
|
s->parent = bdrv_query_bds_stats(parent_child->bs, blk_level);
|
|
}
|
|
|
|
filter_or_cow_bs = bdrv_filter_or_cow_bs(bs);
|
|
if (blk_level && filter_or_cow_bs) {
|
|
/*
|
|
* Put any filtered or COW child here (for backwards
|
|
* compatibility to when we put bs0->backing here, which might
|
|
* be either)
|
|
*/
|
|
s->backing = bdrv_query_bds_stats(filter_or_cow_bs, blk_level);
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
BlockInfoList *qmp_query_block(Error **errp)
|
|
{
|
|
BlockInfoList *head = NULL, **p_next = &head;
|
|
BlockBackend *blk;
|
|
Error *local_err = NULL;
|
|
|
|
for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) {
|
|
BlockInfoList *info;
|
|
|
|
if (!*blk_name(blk) && !blk_get_attached_dev(blk)) {
|
|
continue;
|
|
}
|
|
|
|
info = g_malloc0(sizeof(*info));
|
|
bdrv_query_info(blk, &info->value, &local_err);
|
|
if (local_err) {
|
|
error_propagate(errp, local_err);
|
|
g_free(info);
|
|
qapi_free_BlockInfoList(head);
|
|
return NULL;
|
|
}
|
|
|
|
*p_next = info;
|
|
p_next = &info->next;
|
|
}
|
|
|
|
return head;
|
|
}
|
|
|
|
BlockStatsList *qmp_query_blockstats(bool has_query_nodes,
|
|
bool query_nodes,
|
|
Error **errp)
|
|
{
|
|
BlockStatsList *head = NULL, **tail = &head;
|
|
BlockBackend *blk;
|
|
BlockDriverState *bs;
|
|
|
|
/* Just to be safe if query_nodes is not always initialized */
|
|
if (has_query_nodes && query_nodes) {
|
|
for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) {
|
|
AioContext *ctx = bdrv_get_aio_context(bs);
|
|
|
|
aio_context_acquire(ctx);
|
|
QAPI_LIST_APPEND(tail, bdrv_query_bds_stats(bs, false));
|
|
aio_context_release(ctx);
|
|
}
|
|
} else {
|
|
for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) {
|
|
AioContext *ctx = blk_get_aio_context(blk);
|
|
BlockStats *s;
|
|
char *qdev;
|
|
|
|
if (!*blk_name(blk) && !blk_get_attached_dev(blk)) {
|
|
continue;
|
|
}
|
|
|
|
aio_context_acquire(ctx);
|
|
s = bdrv_query_bds_stats(blk_bs(blk), true);
|
|
s->device = g_strdup(blk_name(blk));
|
|
|
|
qdev = blk_get_attached_dev_id(blk);
|
|
if (qdev && *qdev) {
|
|
s->qdev = qdev;
|
|
} else {
|
|
g_free(qdev);
|
|
}
|
|
|
|
bdrv_query_blk_stats(s->stats, blk);
|
|
aio_context_release(ctx);
|
|
|
|
QAPI_LIST_APPEND(tail, s);
|
|
}
|
|
}
|
|
|
|
return head;
|
|
}
|
|
|
|
void bdrv_snapshot_dump(QEMUSnapshotInfo *sn)
|
|
{
|
|
char clock_buf[128];
|
|
char icount_buf[128] = {0};
|
|
int64_t secs;
|
|
char *sizing = NULL;
|
|
|
|
if (!sn) {
|
|
qemu_printf("%-10s%-17s%8s%20s%13s%11s",
|
|
"ID", "TAG", "VM SIZE", "DATE", "VM CLOCK", "ICOUNT");
|
|
} else {
|
|
g_autoptr(GDateTime) date = g_date_time_new_from_unix_local(sn->date_sec);
|
|
g_autofree char *date_buf = g_date_time_format(date, "%Y-%m-%d %H:%M:%S");
|
|
|
|
secs = sn->vm_clock_nsec / 1000000000;
|
|
snprintf(clock_buf, sizeof(clock_buf),
|
|
"%02d:%02d:%02d.%03d",
|
|
(int)(secs / 3600),
|
|
(int)((secs / 60) % 60),
|
|
(int)(secs % 60),
|
|
(int)((sn->vm_clock_nsec / 1000000) % 1000));
|
|
sizing = size_to_str(sn->vm_state_size);
|
|
if (sn->icount != -1ULL) {
|
|
snprintf(icount_buf, sizeof(icount_buf),
|
|
"%"PRId64, sn->icount);
|
|
}
|
|
qemu_printf("%-9s %-16s %8s%20s%13s%11s",
|
|
sn->id_str, sn->name,
|
|
sizing,
|
|
date_buf,
|
|
clock_buf,
|
|
icount_buf);
|
|
}
|
|
g_free(sizing);
|
|
}
|
|
|
|
static void dump_qdict(int indentation, QDict *dict);
|
|
static void dump_qlist(int indentation, QList *list);
|
|
|
|
static void dump_qobject(int comp_indent, QObject *obj)
|
|
{
|
|
switch (qobject_type(obj)) {
|
|
case QTYPE_QNUM: {
|
|
QNum *value = qobject_to(QNum, obj);
|
|
char *tmp = qnum_to_string(value);
|
|
qemu_printf("%s", tmp);
|
|
g_free(tmp);
|
|
break;
|
|
}
|
|
case QTYPE_QSTRING: {
|
|
QString *value = qobject_to(QString, obj);
|
|
qemu_printf("%s", qstring_get_str(value));
|
|
break;
|
|
}
|
|
case QTYPE_QDICT: {
|
|
QDict *value = qobject_to(QDict, obj);
|
|
dump_qdict(comp_indent, value);
|
|
break;
|
|
}
|
|
case QTYPE_QLIST: {
|
|
QList *value = qobject_to(QList, obj);
|
|
dump_qlist(comp_indent, value);
|
|
break;
|
|
}
|
|
case QTYPE_QBOOL: {
|
|
QBool *value = qobject_to(QBool, obj);
|
|
qemu_printf("%s", qbool_get_bool(value) ? "true" : "false");
|
|
break;
|
|
}
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
static void dump_qlist(int indentation, QList *list)
|
|
{
|
|
const QListEntry *entry;
|
|
int i = 0;
|
|
|
|
for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) {
|
|
QType type = qobject_type(entry->value);
|
|
bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
|
|
qemu_printf("%*s[%i]:%c", indentation * 4, "", i,
|
|
composite ? '\n' : ' ');
|
|
dump_qobject(indentation + 1, entry->value);
|
|
if (!composite) {
|
|
qemu_printf("\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void dump_qdict(int indentation, QDict *dict)
|
|
{
|
|
const QDictEntry *entry;
|
|
|
|
for (entry = qdict_first(dict); entry; entry = qdict_next(dict, entry)) {
|
|
QType type = qobject_type(entry->value);
|
|
bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
|
|
char *key = g_malloc(strlen(entry->key) + 1);
|
|
int i;
|
|
|
|
/* replace dashes with spaces in key (variable) names */
|
|
for (i = 0; entry->key[i]; i++) {
|
|
key[i] = entry->key[i] == '-' ? ' ' : entry->key[i];
|
|
}
|
|
key[i] = 0;
|
|
qemu_printf("%*s%s:%c", indentation * 4, "", key,
|
|
composite ? '\n' : ' ');
|
|
dump_qobject(indentation + 1, entry->value);
|
|
if (!composite) {
|
|
qemu_printf("\n");
|
|
}
|
|
g_free(key);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return whether dumping the given QObject with dump_qobject() would
|
|
* yield an empty dump, i.e. not print anything.
|
|
*/
|
|
static bool qobject_is_empty_dump(const QObject *obj)
|
|
{
|
|
switch (qobject_type(obj)) {
|
|
case QTYPE_QNUM:
|
|
case QTYPE_QSTRING:
|
|
case QTYPE_QBOOL:
|
|
return false;
|
|
|
|
case QTYPE_QDICT:
|
|
return qdict_size(qobject_to(QDict, obj)) == 0;
|
|
|
|
case QTYPE_QLIST:
|
|
return qlist_empty(qobject_to(QList, obj));
|
|
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Dumps the given ImageInfoSpecific object in a human-readable form,
|
|
* prepending an optional prefix if the dump is not empty.
|
|
*/
|
|
void bdrv_image_info_specific_dump(ImageInfoSpecific *info_spec,
|
|
const char *prefix,
|
|
int indentation)
|
|
{
|
|
QObject *obj, *data;
|
|
Visitor *v = qobject_output_visitor_new(&obj);
|
|
|
|
visit_type_ImageInfoSpecific(v, NULL, &info_spec, &error_abort);
|
|
visit_complete(v, &obj);
|
|
data = qdict_get(qobject_to(QDict, obj), "data");
|
|
if (!qobject_is_empty_dump(data)) {
|
|
if (prefix) {
|
|
qemu_printf("%*s%s", indentation * 4, "", prefix);
|
|
}
|
|
dump_qobject(indentation + 1, data);
|
|
}
|
|
qobject_unref(obj);
|
|
visit_free(v);
|
|
}
|
|
|
|
/**
|
|
* Print the given @info object in human-readable form. Every field is indented
|
|
* using the given @indentation (four spaces per indentation level).
|
|
*
|
|
* When using this to print a whole block graph, @protocol can be set to true to
|
|
* signify that the given information is associated with a protocol node, i.e.
|
|
* just data storage for an image, such that the data it presents is not really
|
|
* a full VM disk. If so, several fields change name: For example, "virtual
|
|
* size" is printed as "file length".
|
|
* (Consider a qcow2 image, which is represented by a qcow2 node and a file
|
|
* node. Printing a "virtual size" for the file node does not make sense,
|
|
* because without the qcow2 node, it is not really a guest disk, so it does not
|
|
* have a "virtual size". Therefore, we call it "file length" instead.)
|
|
*
|
|
* @protocol is ignored when @indentation is 0, because we take that to mean
|
|
* that the associated node is the root node in the queried block graph, and
|
|
* thus is always to be interpreted as a standalone guest disk.
|
|
*/
|
|
void bdrv_node_info_dump(BlockNodeInfo *info, int indentation, bool protocol)
|
|
{
|
|
char *size_buf, *dsize_buf;
|
|
g_autofree char *ind_s = g_strdup_printf("%*s", indentation * 4, "");
|
|
|
|
if (indentation == 0) {
|
|
/* Top level, consider this a normal image */
|
|
protocol = false;
|
|
}
|
|
|
|
if (!info->has_actual_size) {
|
|
dsize_buf = g_strdup("unavailable");
|
|
} else {
|
|
dsize_buf = size_to_str(info->actual_size);
|
|
}
|
|
size_buf = size_to_str(info->virtual_size);
|
|
qemu_printf("%s%s: %s\n"
|
|
"%s%s: %s\n"
|
|
"%s%s: %s (%" PRId64 " bytes)\n"
|
|
"%sdisk size: %s\n",
|
|
ind_s, protocol ? "filename" : "image", info->filename,
|
|
ind_s, protocol ? "protocol type" : "file format",
|
|
info->format,
|
|
ind_s, protocol ? "file length" : "virtual size",
|
|
size_buf, info->virtual_size,
|
|
ind_s, dsize_buf);
|
|
g_free(size_buf);
|
|
g_free(dsize_buf);
|
|
|
|
if (info->has_encrypted && info->encrypted) {
|
|
qemu_printf("%sencrypted: yes\n", ind_s);
|
|
}
|
|
|
|
if (info->has_cluster_size) {
|
|
qemu_printf("%scluster_size: %" PRId64 "\n",
|
|
ind_s, info->cluster_size);
|
|
}
|
|
|
|
if (info->has_dirty_flag && info->dirty_flag) {
|
|
qemu_printf("%scleanly shut down: no\n", ind_s);
|
|
}
|
|
|
|
if (info->backing_filename) {
|
|
qemu_printf("%sbacking file: %s", ind_s, info->backing_filename);
|
|
if (!info->full_backing_filename) {
|
|
qemu_printf(" (cannot determine actual path)");
|
|
} else if (strcmp(info->backing_filename,
|
|
info->full_backing_filename) != 0) {
|
|
qemu_printf(" (actual path: %s)", info->full_backing_filename);
|
|
}
|
|
qemu_printf("\n");
|
|
if (info->backing_filename_format) {
|
|
qemu_printf("%sbacking file format: %s\n",
|
|
ind_s, info->backing_filename_format);
|
|
}
|
|
}
|
|
|
|
if (info->has_snapshots) {
|
|
SnapshotInfoList *elem;
|
|
|
|
qemu_printf("%sSnapshot list:\n", ind_s);
|
|
qemu_printf("%s", ind_s);
|
|
bdrv_snapshot_dump(NULL);
|
|
qemu_printf("\n");
|
|
|
|
/* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but
|
|
* we convert to the block layer's native QEMUSnapshotInfo for now.
|
|
*/
|
|
for (elem = info->snapshots; elem; elem = elem->next) {
|
|
QEMUSnapshotInfo sn = {
|
|
.vm_state_size = elem->value->vm_state_size,
|
|
.date_sec = elem->value->date_sec,
|
|
.date_nsec = elem->value->date_nsec,
|
|
.vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL +
|
|
elem->value->vm_clock_nsec,
|
|
.icount = elem->value->has_icount ?
|
|
elem->value->icount : -1ULL,
|
|
};
|
|
|
|
pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id);
|
|
pstrcpy(sn.name, sizeof(sn.name), elem->value->name);
|
|
qemu_printf("%s", ind_s);
|
|
bdrv_snapshot_dump(&sn);
|
|
qemu_printf("\n");
|
|
}
|
|
}
|
|
|
|
if (info->format_specific) {
|
|
bdrv_image_info_specific_dump(info->format_specific,
|
|
"Format specific information:\n",
|
|
indentation);
|
|
}
|
|
}
|