diff options
| author | Fam Zheng <famz@redhat.com> | 2015-06-08 13:56:09 +0800 |
|---|---|---|
| committer | Michael Roth <mdroth@linux.vnet.ibm.com> | 2015-07-29 21:46:07 -0500 |
| commit | 27ed14c4d7decd359edb7fec0c8a39971ef32a72 (patch) | |
| tree | a9d5af339c7ddb3f048dbc6de54d757b72412025 /block.c | |
| parent | 6a45a1b8e45bf3396dd4901a5f7cbadc3780f250 (diff) | |
mirror: Do zero write on target if sectors not allocated
If guest discards a source cluster, mirroring with bdrv_aio_readv is overkill.
Some protocols do zero upon discard, where it's best to use
bdrv_aio_write_zeroes, otherwise, bdrv_aio_discard will be enough.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit dcfb3beb5130694b76b57de109619fcbf9c7e5b5)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Diffstat (limited to 'block.c')
0 files changed, 0 insertions, 0 deletions