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| author | Paolo Bonzini <pbonzini@redhat.com> | 2013-11-22 13:40:01 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-12-03 15:26:49 +0100 |
| commit | 84f94a9a82487639bc87d5f09f938c9f6a61f79a (patch) | |
| tree | b8f6e8df50785865b68f8c6e68d54f25ebed8ba1 /qdict-test-data.txt | |
| parent | 823bd7391c96ba675f20fd6d952d1cb6e1ffb851 (diff) | |
scsi-disk: correctly implement WRITE SAME
Fetch the data to be written from the input buffer. If it is all zeroes,
we can use the write_zeroes call (possibly with the new MAY_UNMAP flag).
Otherwise, do as many write cycles as needed, writing 512k at a time.
Strictly speaking, this is still incorrect because a zero cluster should
only be written if the MAY_UNMAP flag is set. But this is a bug in qcow2
and the other formats, not in the SCSI code.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'qdict-test-data.txt')
0 files changed, 0 insertions, 0 deletions