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[dm-devel] Re: [PATCH] Remove capping from dev_loss_tmo



Hannes Reinecke wrote:
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 573ce21..6f39bf4 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -475,7 +475,8 @@ MODULE_PARM_DESC(dev_loss_tmo,
 		 "Maximum number of seconds that the FC transport should"
 		 " insulate the loss of a remote port. Once this value is"
 		 " exceeded, the scsi target is removed. Value should be"
-		 " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT.");
+		 " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT if"
+		 " fast_io_fail_tmo is not set.");

What was the largest timeout value you tried? I think I am hitting a bug with iscsi where if you pass queue_delayed_work a large enough value it will overflow and instead of getting 100 minutes you get 1.


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