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qapi: Add optional field "name" to block dirty bitmap

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This field will be set for user created dirty bitmap. Also pass in an
error pointer to bdrv_create_dirty_bitmap, so when a name is already
taken on this BDS, it can report an error message. This is not global
check, two BDSes can have dirty bitmap with a common name.

Implemented bdrv_find_dirty_bitmap to find a dirty bitmap by name, will
be used later when other QMP commands want to reference dirty bitmap by
name.

Add bdrv_dirty_bitmap_make_anon. This unsets the name of dirty bitmap.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1429314609-29776-3-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Fam Zheng 2015-04-17 19:49:50 -04:00 • committed by Kevin Wolf
parent efcfa278dc
commit 0db6e54a8a
5 changed files with 42 additions and 5 deletions
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2
block/mirror.c
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@ -703,7 +703,7 @@ static void mirror_start_job(BlockDriverState *bs, BlockDriverState *target,
s->granularity = granularity;
s->buf_size = MAX(buf_size, granularity);
s->dirty_bitmap = bdrv_create_dirty_bitmap(bs, granularity, errp);
s->dirty_bitmap = bdrv_create_dirty_bitmap(bs, granularity, NULL, errp);
if (!s->dirty_bitmap) {
return;
}