This is a note to let you know that I've just added the patch titled
IB/srp: Avoid offlining operational SCSI devices
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ib-srp-avoid-offlining-operational-scsi-devices.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 99b6697a50c2acbe3ca2772d359fc9a28835dc84 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@xxxxxxx>
Date: Thu, 10 Oct 2013 13:52:33 +0200
Subject: IB/srp: Avoid offlining operational SCSI devices
From: Bart Van Assche <bvanassche@xxxxxxx>
commit 99b6697a50c2acbe3ca2772d359fc9a28835dc84 upstream.
If SCSI commands are submitted with a SCSI request timeout that is
lower than the the IB RC timeout, it can happen that the SCSI error
handler has already started device recovery before transport layer
error handling starts. So it can happen that the SCSI error handler
tries to abort a SCSI command after it has been reset by
srp_rport_reconnect().
Tell the SCSI error handler that such commands have finished and that
it is not necessary to continue its recovery strategy for commands
that have been reset by srp_rport_reconnect().
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
Signed-off-by: Roland Dreier <roland@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/ulp/srp/ib_srp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1752,7 +1752,7 @@ static int srp_abort(struct scsi_cmnd *s
shost_printk(KERN_ERR, target->scsi_host, "SRP abort called\n");
if (!req || !srp_claim_req(target, req, scmnd))
- return FAILED;
+ return SUCCESS;
if (srp_send_tsk_mgmt(target, req->index, scmnd->device->lun,
SRP_TSK_ABORT_TASK) == 0)
ret = SUCCESS;
Patches currently in stable-queue which might be from bvanassche@xxxxxxx are
queue-3.12/ib-srp-remove-target-from-list-before-freeing-scsi_host-structure.patch
queue-3.12/ib-srp-avoid-offlining-operational-scsi-devices.patch
queue-3.12/ib-srp-report-receive-errors-correctly.patch
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