[Qemu-devel] [PATCH for-2.0] iscsi: recognize "invalid field" ASCQ from WRITE SAME command

[Paolo Bonzini]

Some targets may return "invalid field" as the ASCQ from WRITE SAME
if they support the command only without the UNMAP field.  Recognize
that, and return ENOTSUP just like for "invalid operation code".

Signed-off-by: Paolo Bonzini <address@hidden>
---
 block/iscsi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/block/iscsi.c b/block/iscsi.c
index 6d6cd4f..f01c883 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -1012,7 +1012,8 @@ retry:
 
     if (iTask.status == SCSI_STATUS_CHECK_CONDITION &&
         iTask.task->sense.key == SCSI_SENSE_ILLEGAL_REQUEST &&
-        iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_OPERATION_CODE) {
+        (iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_OPERATION_CODE ||
+        iTask.task->sense.ascq == SCSI_SENSE_ASCQ_INVALID_FIELD_IN_CDB)) {
         /* WRITE SAME is not supported by the target */
         iscsilun->has_write_same = false;
         scsi_free_scsi_task(iTask.task);
-- 
1.9.0