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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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3
block/qcow.c
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@ -798,7 +798,8 @@ static int qcow_create(const char *filename, QemuOpts *opts, Error **errp)
qcow_bs = NULL;
ret = bdrv_open(&qcow_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 cleanup;