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[Qemu-devel] [PATCH V4 4/4] Change default to qcow2 for sync mode none.
From: |
Ian Main |
Subject: |
[Qemu-devel] [PATCH V4 4/4] Change default to qcow2 for sync mode none. |
Date: |
Wed, 17 Jul 2013 13:04:22 -0700 |
qcow2 supports backing files so it makes sense to default to qcow2
for MIRROR_SYNC_MODE_NONE so that we can use the source as a backing
drive and export it via nbd. Defaulting FULL and TOP to SYNC_MODE_NONE
breaks tests but that could be fixed if we wanted it.
Signed-off-by: Ian Main <address@hidden>
---
blockdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/blockdev.c b/blockdev.c
index 000dea6..805b0e5 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1462,7 +1462,7 @@ void qmp_drive_backup(const char *device, const char
*target,
}
if (!has_format) {
- format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
+ format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : "qcow2";
}
if (format) {
drv = bdrv_find_format(format);
--
1.8.1.4