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block: vmdk image file reopen 

This patch supports reopen for VMDK image files.  VMDK extents are added
to the existing reopen queue, so that the transactional model of reopen
is maintained with multiple image files.

Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Jeff Cody 2012-09-20 15:13:30 -04:00 committed by Kevin Wolf
parent d177692ede
commit 3897575f1c
1 changed files with 35 additions and 0 deletions
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35
block/vmdk.c
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@ -300,6 +300,40 @@ static int vmdk_is_cid_valid(BlockDriverState *bs)
return 1;
}
/* Queue extents, if any, for reopen() */
static int vmdk_reopen_prepare(BDRVReopenState *state,
BlockReopenQueue *queue, Error **errp)
{
BDRVVmdkState *s;
int ret = -1;
int i;
VmdkExtent *e;
assert(state != NULL);
assert(state->bs != NULL);
if (queue == NULL) {
error_set(errp, ERROR_CLASS_GENERIC_ERROR,
"No reopen queue for VMDK extents");
goto exit;
}
s = state->bs->opaque;
assert(s != NULL);
for (i = 0; i < s->num_extents; i++) {
e = &s->extents[i];
if (e->file != state->bs->file) {
bdrv_reopen_queue(queue, e->file, state->flags);
}
}
ret = 0;
exit:
return ret;
}
static int vmdk_parent_open(BlockDriverState *bs)
{
char *p_name;
@ -1646,6 +1680,7 @@ static BlockDriver bdrv_vmdk = {
.instance_size = sizeof(BDRVVmdkState),
.bdrv_probe = vmdk_probe,
.bdrv_open = vmdk_open,
.bdrv_reopen_prepare = vmdk_reopen_prepare,
.bdrv_read = vmdk_co_read,
.bdrv_write = vmdk_co_write,
.bdrv_close = vmdk_close,