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vdisk_blockio: Reenable COMPARE AND WRITE

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The COMPARE AND WRITE implementation has been tested as follows against
an SCST vdisk_blockio device:

lba=7
bdev=$bdev
for ((i=0;i<4;i++)); do dd if=/dev/urandom of=b$i bs=8k count=1; done
for p in "0 1" "1 2" "2 3" "3 0"; do set $p; cat b$1 b$2 >b$1$2; done
dd if=/dev/urandom of=$bdev
dd if=b0 of=$bdev seek=$lba
md5sum $bdev
for ((i=0;i<10000;i++)); do for f in b01 b12 b23 b30; do sg_compare_and_write -l $lba -i $f -n 16 -x 16384 $bdev; done; done
md5sum $bdev

Signed-off-by: Bart Van Assche <bvanassche@acm.org>



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@5412 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2014-04-09 23:59:02 +00:00
parent 836481737a
commit 6a01628b2f
1 changed files with 1 additions and 1 deletions
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scst/src/dev_handlers/scst_vdisk.c
+1 -1
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@@ -1420,6 +1420,7 @@ static enum compl_status_e vdisk_invalid_opcode(struct vdisk_cmd_params *p)
[UNMAP] = vdisk_exec_unmap, \
[WRITE_SAME] = vdisk_exec_write_same, \
[WRITE_SAME_16] = vdisk_exec_write_same, \
[COMPARE_AND_WRITE] = vdisk_exec_caw, \
[MAINTENANCE_IN] = vdisk_exec_maintenance_in, \
[SEND_DIAGNOSTIC] = vdisk_exec_send_diagnostic, \
[FORMAT_UNIT] = vdisk_exec_format_unit,
@@ -1451,7 +1452,6 @@ static vdisk_op_fn fileio_ops[256] = {
[WRITE_10] = fileio_exec_write,
[WRITE_12] = fileio_exec_write,
[WRITE_16] = fileio_exec_write,
[COMPARE_AND_WRITE] = vdisk_exec_caw,
[WRITE_VERIFY] = fileio_exec_write_verify,
[WRITE_VERIFY_12] = fileio_exec_write_verify,
[WRITE_VERIFY_16] = fileio_exec_write_verify,