If a VFC port gets unmapped in the VIOS, it may not respond with a CRQ init
complete following H_REG_CRQ. If this occurs, we can end up having called
scsi_block_requests and not a resulting unblock until the init complete
happens, which may never occur, and we end up hanging I/O requests.
This patch ensures the host action stay set to IBMVFC_HOST_ACTION_TGT_DEL so
we move all rports into devloss state and unblock unless we receive an
init complete.
Signed-off-by: Brian King <brk...@linux.vnet.ibm.com>
---
drivers/scsi/ibmvscsi/ibmvfc.c | 1 -
1 file changed, 1 deletion(-)
diff -puN drivers/scsi/ibmvscsi/ibmvfc.c~ibmvfc_unmap_hang_fix
drivers/scsi/ibmvscsi/ibmvfc.c
--- linux-2.6.git/drivers/scsi/ibmvscsi/ibmvfc.c~ibmvfc_unmap_hang_fix
2016-09-09 15:46:36.452011778 -0500
+++ linux-2.6.git-bjking1/drivers/scsi/ibmvscsi/ibmvfc.c 2016-09-09
15:47:07.026632886 -0500
@@ -717,7 +717,6 @@ static int ibmvfc_reset_crq(struct ibmvf
spin_lock_irqsave(vhost->host->host_lock, flags);
vhost->state = IBMVFC_NO_CRQ;
vhost->logged_in = 0;
- ibmvfc_set_host_action(vhost, IBMVFC_HOST_ACTION_NONE);
/* Clean out the queue */
memset(crq->msgs, 0, PAGE_SIZE);
_
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
