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qmp: add persistent flag to block-dirty-bitmap-add 

Add optional 'persistent' flag to qmp command block-dirty-bitmap-add.
Default is false.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20170628120530.31251-24-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2017-06-28 15:05:23 +03:00 committed by Max Reitz
parent da0eb242ad
commit fd5ae4ccbe
2 changed files with 24 additions and 2 deletions
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18
blockdev.c
View File

@ -1983,6 +1983,7 @@ static void block_dirty_bitmap_add_prepare(BlkActionState *common,
/* AIO context taken and released within qmp_block_dirty_bitmap_add */
qmp_block_dirty_bitmap_add(action->node, action->name,
action->has_granularity, action->granularity,
action->has_persistent, action->persistent,
&local_err);
if (!local_err) {
@ -2708,9 +2709,11 @@ out:
void qmp_block_dirty_bitmap_add(const char *node, const char *name,
bool has_granularity, uint32_t granularity,
bool has_persistent, bool persistent,
Error **errp)
{
BlockDriverState *bs;
BdrvDirtyBitmap *bitmap;
if (!name || name[0] == '\0') {
error_setg(errp, "Bitmap name cannot be empty");
@ -2733,7 +2736,20 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
granularity = bdrv_get_default_bitmap_granularity(bs);
}
bdrv_create_dirty_bitmap(bs, granularity, name, errp);
if (!has_persistent) {
persistent = false;
}
if (persistent &&
!bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp))
{
return;
}
bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp);
if (bitmap != NULL) {
bdrv_dirty_bitmap_set_persistance(bitmap, persistent);
}
}
void qmp_block_dirty_bitmap_remove(const char *node, const char *name,

8
qapi/block-core.json
View File

@ -1553,10 +1553,16 @@
# @granularity: the bitmap granularity, default is 64k for
# block-dirty-bitmap-add
#
# @persistent: the bitmap is persistent, i.e. it will be saved to the
# corresponding block device image file on its close. For now only
# Qcow2 disks support persistent bitmaps. Default is false for
# block-dirty-bitmap-add. (Since: 2.10)
#
# Since: 2.4
##
{ 'struct': 'BlockDirtyBitmapAdd',
'data': { 'node': 'str', 'name': 'str', '*granularity': 'uint32' } }
'data': { 'node': 'str', 'name': 'str', '*granularity': 'uint32',
'*persistent': 'bool' } }
##
# @block-dirty-bitmap-add: