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[Qemu-devel] [PATCH v4 14/19] block: vmdk image file reopen
From: |
Jeff Cody |
Subject: |
[Qemu-devel] [PATCH v4 14/19] block: vmdk image file reopen |
Date: |
Thu, 20 Sep 2012 15:13:30 -0400 |
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 <address@hidden>
---
block/vmdk.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/block/vmdk.c b/block/vmdk.c
index bba4c61..f2e861b 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -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,
--
1.7.11.4
- [Qemu-devel] [PATCH v4 17/19] block: vpc image file reopen, (continued)
[Qemu-devel] [PATCH v4 16/19] block: vdi image file reopen, Jeff Cody, 2012/09/20
[Qemu-devel] [PATCH v4 11/19] block: qed image file reopen, Jeff Cody, 2012/09/20
[Qemu-devel] [PATCH v4 13/19] block: qcow image file reopen, Jeff Cody, 2012/09/20
[Qemu-devel] [PATCH v4 14/19] block: vmdk image file reopen,
Jeff Cody <=
Re: [Qemu-devel] [PATCH v4 00/19] block: bdrv_reopen() patches, Kevin Wolf, 2012/09/21