From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mike Christie <michaelc@cs.wisc.edu>
Subject: Re: [dm-devel] [PATCH] scsi-dh-emc: fix activate vs set_params race
Date: Thu, 04 Apr 2013 18:11:41 -0500
Message-ID: <515E08AD.3060404@cs.wisc.edu>
References: <Pine.LNX.4.64.1304021954420.27554@file.rdu.redhat.com>
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Cc: Mikulas Patocka <mpatocka@redhat.com>, "Alasdair G. Kergon" <agk@redhat.com>, Mike Snitzer <msnitzer@redhat.com>, Chandra Seetharaman <sekharan@us.ibm.com>, linux-scsi@vger.kernel.org, Rob Evers <revers@redhat.com>

On 04/02/2013 07:09 PM, Mikulas Patocka wrote:
> Hi
> 
> This fixes a possible race in scsi_dh_emc. It is untested because I don't 
> have the hardware. It could happen when we reload a multipath device and 
> path failure happens at the same time.


I think this patch is ok. I do not have the hw to test it anymore.

If you wanted to test just to make sure it is safe you should bug Rob
Evers. He can help you find a machine in the westford lab that has it