From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Scobie Subject: Re: mdadm creating raid5 with all spare disks Date: Fri, 11 Dec 2009 13:47:44 +1300 Message-ID: <4B2196B0.2090604@sauce.co.nz> References: <1D0665FE-138F-480F-9872-48C94CEBC5C2@mac.com> <20091211071006.56270ebf@notabene.brown> <91296851101702456968380052308470713510-Webmail@me.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <91296851101702456968380052308470713510-Webmail@me.com> Sender: linux-raid-owner@vger.kernel.org To: Matthew Tehonica Cc: Neil Brown , "linux-raid@vger.kernel.org" List-Id: linux-raid.ids Matthew Tehonica wrote: > After about 5 minutes, I try to cat /proc/mdstat again and it just freezes and sits there with the cursor flashing. At this point, I can do anything with mdadm, not even like a --detail on another array on the system. Just sits there and flashes. I've tried with a bunch of different disks and same thing all the time. Here is a section from my kern.log. > > Dec 10 19:01:07 ghostrider kernel: [ 1338.011320] /build/buildd/linux-2.6.31/drivers/scsi/mvsas/mv_sas.c 1669:mvs_abort_task:rc= 5 > Dec 10 19:01:07 ghostrider kernel: [ 1338.011330] /build/buildd/linux-2.6.31/drivers/scsi/mvsas/mv_sas.c 1608:mvs_query_task:rc= 5 > Dec 10 19:01:07 ghostrider kernel: [ 1338.011343] /build/buildd/linux-2.6.31/drivers/scsi/mvsas/mv_sas.c 1669:mvs_abort_task:rc= 5 > Dec 10 19:01:07 ghostrider kernel: [ 1338.011349] /build/buildd/linux-2.6.31/drivers/scsi/mvsas/mv_sas.c 1608:mvs_query_task:rc= 5 > Dec 10 19:01:07 ghostrider kernel: [ 1338.011443] /build/buildd/linux-2.6.31/drivers/scsi/mvsas/mv_sas.c 1669:mvs_abort_task:rc= 5 > Dec 10 19:01:07 ghostrider kernel: [ 1338.011449] /build/buildd/linux-2.6.31/drivers/scsi/mvsas/mv_sas.c 1608:mvs_query_task:rc= 5 > Dec 10 19:01:07 ghostrider kernel: [ 1338.011461] end_request: I/O error, dev sdf, sector 0 > Dec 10 19:01:07 ghostrider kernel: [ 1338.011472] md: super_written gets error=-5, uptodate=0 Looks like the drives are being dropped by the controller. I believe there was some recent discussion here about mv_sas, md and failures under heavy I/O load. Regards, Richard