[Qemu-devel] [PATCH for-2.4 V2 7/9] block/iscsi: handle SCSI_STATUS_TASK_SET_FULL

[Peter Lieven <pl@kamp.de>]

a target may issue a SCSI_STATUS_TASK_SET_FULL status
if there is more than one "BUSY" command queued already.

Signed-off-by: Peter Lieven <pl@kamp.de>
---
 block/iscsi.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/block/iscsi.c b/block/iscsi.c
index 5999f74..328907b 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -186,10 +186,13 @@ iscsi_co_generic_cb(struct iscsi_context *iscsi, int status,
                 iTask->do_retry = 1;
                 goto out;
             }
-            if (status == SCSI_STATUS_BUSY) {
+            /* status 0x28 is SCSI_TASK_SET_FULL. It was first introduced
+             * in libiscsi 1.10.0. Hardcode this value here to avoid
+             * the need to bump the libiscsi requirement to 1.10.0 */
+            if (status == SCSI_STATUS_BUSY || status == 0x28) {
                 unsigned retry_time =
                     exp_random(iscsi_retry_times[iTask->retries - 1]);
-                error_report("iSCSI Busy (retry #%u in %u ms): %s",
+                error_report("iSCSI Busy/TaskSetFull (retry #%u in %u ms): %s",
                              iTask->retries, retry_time,
                              iscsi_get_error(iscsi));
                 aio_timer_init(iTask->iscsilun->aio_context,
-- 
1.9.1