From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bart Van Assche Subject: Re: srp-ha backport Date: Wed, 21 Nov 2012 19:35:18 +0100 Message-ID: <50AD1EE6.6090206@acm.org> References: <5054492E.1090403@acm.org> <50AB84C1.5090105@acm.org> <50ACE5B0.3060607@acm.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Vasiliy Tolstov Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org On 11/21/12 18:41, Vasiliy Tolstov wrote: > Another test has very bad results: > initiator multipath -ll running than storage go to down never returns > (deadlock), but other multipath -ll returns immediate with output (i'm > reboot sas01) It could be helpful to have a look at the call stacks generated by "echo w >/proc/sysrq-trigger". If this output reveals that device removal triggers hanging I/O then that might indicate that one or more SCSI device removal patches have not yet been backported to SLES 11 SP2. Have you already tried whether the same test succeeds with kernel 3.6.7 ? Several SCSI device removal fixes have been integrated in kernel 3.6. Bart. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html