From: Long Li <longli@xxxxxxxxxxxxx>
FC disks issue I/O directly to the host storage port driver, this is
diffirent to VHD disks where I/O is virtualized and timeout is handled
by the host VSP (Virtualization Service Provider).
FC disks are usually setup in a multipath system, and they don't want to
reset timer on I/O timeout. Timeout is detected by multipath as a good
time to failover and recover.
Patch v2 includes suggestions from Bart Van Assche
<Bart.VanAssche@xxxxxxxxxxx>
Signed-off-by: Long Li <longli@xxxxxxxxxxxxx>
---
drivers/scsi/storvsc_drv.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 8d955db..3cc8d67 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1495,6 +1495,10 @@ static int storvsc_host_reset_handler(struct scsi_cmnd *scmnd)
*/
static enum blk_eh_timer_return storvsc_eh_timed_out(struct scsi_cmnd *scmnd)
{
+#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
+ if (scmnd->device->host->transportt == fc_transport_template)
+ return fc_eh_timed_out(scmnd);
+#endif
return BLK_EH_RESET_TIMER;
}
--
2.7.4
