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qemu-iotests: Fix supported cache modes for 052 

The requirement for this test case is really "no O_DIRECT", because the
temporary snapshot for BDRV_O_SNAPSHOT is created in /tmp, which often
is a tmpfs.

Commit f210a83c ('qemu-iotests: Add _default_cache_mode and
_supported_cache_modes') turned the restriction into writethrough-only,
but that's not really necessary.

Allow to run the test for any non-O_DIRECT cache modes, and use the
global default of writeback if no cache mode is specified.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1412076430-11623-3-git-send-email-kwolf@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kevin Wolf 2014-09-30 13:27:10 +02:00 committed by Stefan Hajnoczi
parent d9323e9b20
commit cf77b2d25e
1 changed files with 3 additions and 2 deletions
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5
tests/qemu-iotests/052
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@ -41,8 +41,9 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
_supported_fmt generic
_supported_proto file
_supported_os Linux
_default_cache_mode "writethrough"
_supported_cache_modes "writethrough"
# Don't do O_DIRECT on tmpfs
_supported_cache_modes "writeback" "writethrough" "unsafe"
size=128M
_make_test_img $size