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block: Use writeback in .bdrv_create() implementations

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There's no reason to use a writethrough cache mode while creating an
image.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2016-03-04 14:53:50 +01:00
parent 2073d410ce
commit 6340472c54
8 changed files with 22 additions and 11 deletions
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9
block/vmdk.c
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@ -1664,7 +1664,8 @@ static int vmdk_create_extent(const char *filename, int64_t filesize,
}
assert(bs == NULL);
ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL,
ret = bdrv_open(&bs, filename, NULL, NULL,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_PROTOCOL,
&local_err);
if (ret < 0) {
error_propagate(errp, local_err);
@ -1944,7 +1945,8 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp)
ret = -ENOENT;
goto exit;
}
ret = bdrv_open(&bs, full_backing, NULL, NULL, BDRV_O_NO_BACKING, errp);
ret = bdrv_open(&bs, full_backing, NULL, NULL,
BDRV_O_NO_BACKING | BDRV_O_CACHE_WB, errp);
g_free(full_backing);
if (ret != 0) {
goto exit;
@ -2015,7 +2017,8 @@ static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp)
}
assert(new_bs == NULL);
ret = bdrv_open(&new_bs, filename, NULL, NULL,
BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err);
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_PROTOCOL,
&local_err);
if (ret < 0) {
error_propagate(errp, local_err);
goto exit;