diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2016-06-16 12:59:30 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-06-16 15:19:56 +0200 |
| commit | 418690447a5340050e64efc3c811fd30d9e96e5b (patch) | |
| tree | 0b416dc586098c594d67cc9f966ba905ee168ed6 /blockdev.c | |
| parent | c9d20029f43a08c6362a655c2c5272612186a004 (diff) | |
block: Fix snapshot=on with aio=native
snapshot=on creates a temporary overlay that is always opened with
cache=unsafe (the cache mode specified by the user is only for the
actual image file and its children). This means that we must not inherit
the BDRV_O_NATIVE_AIO flag for the temporary overlay because trying to
use Linux AIO with cache=unsafe results in an error.
Reproducer without this patch:
$ x86_64-softmmu/qemu-system-x86_64 -drive file=/tmp/test.qcow2,cache=none,aio=native,snapshot=on
qemu-system-x86_64: -drive file=/tmp/test.qcow2,cache=none,aio=native,snapshot=on: aio=native was
specified, but it requires cache.direct=on, which was not specified.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'blockdev.c')
0 files changed, 0 insertions, 0 deletions