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| author | Eric Blake <eblake@redhat.com> | 2016-05-07 21:16:45 -0600 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2016-05-12 15:33:24 +0200 |
| commit | c2e001cc829031f9c2e2c364c77861e3f75ac871 (patch) | |
| tree | 259442e7fe16dcc53e51d0481074d92b4d845020 /qdev-monitor.c | |
| parent | 770e0e0e808c6cd361c718ca1a936ed18864c69e (diff) | |
| download | qemu-c2e001cc829031f9c2e2c364c77861e3f75ac871.zip | |
qemu-io: Add 'write -z -u' to test MAY_UNMAP flag
Make it easier to control whether the BDRV_REQ_MAY_UNMAP flag
can be passed through a write_zeroes command, by adding the '-u'
flag to qemu-io 'write -z' and 'aio_write -z'. To be useful,
the device has to be opened with BDRV_O_UNMAP (done by default
in qemu-io, but can be made explicit with '-d unmap').
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 1462677405-4752-7-git-send-email-eblake@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'qdev-monitor.c')
0 files changed, 0 insertions, 0 deletions