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[Qemu-devel] [PATCH] qcow2: Really use cache=unsafe for image creation
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH] qcow2: Really use cache=unsafe for image creation |
Date: |
Thu, 27 Jan 2011 16:50:02 +0100 |
For cache=unsafe we also need to set BDRV_O_CACHE_WB, otherwise we have some
strange unsafe writethrough mode.
Signed-off-by: Kevin Wolf <address@hidden>
---
block/qcow2.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index dbe4fdd..a1773e4 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -975,7 +975,8 @@ static int qcow2_create2(const char *filename, int64_t
total_size,
*/
BlockDriver* drv = bdrv_find_format("qcow2");
assert(drv != NULL);
- ret = bdrv_open(bs, filename, BDRV_O_RDWR | BDRV_O_NO_FLUSH, drv);
+ ret = bdrv_open(bs, filename,
+ BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH, drv);
if (ret < 0) {
goto out;
}
--
1.7.2.3
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