rbd: Add bdrv_truncate implementation

Reviewed-by: Christian Brunner <chb@muc.de>
Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Josh Durgin 2011-05-26 16:07:34 -07:00 committed by Kevin Wolf
parent 51a135287a
commit 30cdc48cc8

View file

@ -688,6 +688,19 @@ static int64_t qemu_rbd_getlength(BlockDriverState *bs)
return info.size;
}
static int qemu_rbd_truncate(BlockDriverState *bs, int64_t offset)
{
BDRVRBDState *s = bs->opaque;
int r;
r = rbd_resize(s->image, offset);
if (r < 0) {
return r;
}
return 0;
}
static int qemu_rbd_snap_create(BlockDriverState *bs,
QEMUSnapshotInfo *sn_info)
{
@ -784,6 +797,7 @@ static BlockDriver bdrv_rbd = {
.bdrv_get_info = qemu_rbd_getinfo,
.create_options = qemu_rbd_create_options,
.bdrv_getlength = qemu_rbd_getlength,
.bdrv_truncate = qemu_rbd_truncate,
.protocol_name = "rbd",
.bdrv_aio_readv = qemu_rbd_aio_readv,