From: "Bryn M. Reeves" <bmr@redhat.com>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Hannes Reinecke <hare@suse.de>,
Steffen Maier <maier@linux.vnet.ibm.com>,
linux-scsi@vger.kernel.org, Chad Dupuis <chad.dupuis@qlogic.com>,
Andrew Vasquez <andrew.vasquez@qlogic.com>,
James Smart <james.smart@emulex.com>,
James Bottomley <jbottomley@parallels.com>,
Mike Christie <michaelc@cs.wisc.edu>
Subject: Re: [PATCH] scsi_transport_fc: Make 'port_state' writeable
Date: Fri, 15 Mar 2013 12:37:11 +0000 [thread overview]
Message-ID: <514315F7.4010101@redhat.com> (raw)
In-Reply-To: <5143130F.4090702@acm.org>
On 03/15/2013 12:24 PM, Bart Van Assche wrote:
> On 03/15/13 12:55, Hannes Reinecke wrote:
>> And the LLDD is forced into error recovery which'll take _ages_ as each
>> and every command send during error recovery will time out.
>
> Hello Hannes,
>
> I'm analyzing a related but not identical issue with SRP. It would help
> if you could tell with which LLDD you ran into this issue and with which
> values of fast_io_fail_tmo and dev_loss_tmo.
Most of the cases I've seen have involved lpfc (although I don't think
it's in any way exclusive to that LLDD). Even with very low
fast_io_fail_timeout/dev_loss_timeout (<5/10) the eh is busy for 10m or
longer before IO fails and multipath is able to react to the problem.
Regards,
Bryn.
next prev parent reply other threads:[~2013-03-15 12:38 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-15 15:02 [PATCH] scsi_transport_fc: Make 'port_state' writeable Hannes Reinecke
2013-03-14 18:09 ` Steffen Maier
2013-03-15 11:55 ` Hannes Reinecke
2013-03-15 12:01 ` Bryn M. Reeves
2013-03-15 12:24 ` Bart Van Assche
2013-03-15 12:37 ` Bryn M. Reeves [this message]
2013-03-15 12:46 ` Bart Van Assche
2013-03-15 13:28 ` Bryn M. Reeves
2013-03-15 13:41 ` Bart Van Assche
2013-03-15 18:51 ` Mike Christie
2013-03-15 19:13 ` Bart Van Assche
2013-03-15 21:12 ` Mike Christie
2013-03-18 7:09 ` Hannes Reinecke
2013-04-01 21:06 ` James Smart
2013-04-04 6:26 ` Hannes Reinecke
2013-04-05 15:14 ` James Smart
2013-04-12 14:24 ` Chad Dupuis
2013-03-18 21:54 ` Jeremy Linton
2013-04-01 20:51 ` James Smart
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