From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heinz Mauelshagen Subject: Re: ERROR: asr: reading /dev/sdo[Input/output error] Date: Wed, 07 Dec 2011 17:20:53 +0100 Message-ID: <4EDF9265.7080806@redhat.com> References: <4EDF8497.7080508@linux.vnet.ibm.com> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4EDF8497.7080508@linux.vnet.ibm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: dm-devel@redhat.com List-Id: dm-devel.ids On 12/07/2011 04:21 PM, Christian May wrote: > Hi, > > I've setup an IBM HS21 blade with RHEL6.1. The OS installed on a > DS5100 storage server (SAN boot). > During booting I'm recognizing the following messages: > > Starting udev: OK > Setting hostname elm8a203.beaverton.ibm.com: > ERROR: asr: reading /dev/sdo[Input/output error] > ERROR: ddf1: reading /dev/sdo[Input/output error] > ERROR: ddf1: reading /dev/sdo[Input/output error] > ERROR: hpt37x: reading /dev/sdo[Input/output error] > ERROR: hpt45x: reading /dev/sdo[Input/output error] > ERROR: isw: reading /dev/sdo[Input/output error] > ERROR: jmicron: reading /dev/sdo[Input/output error] > ERROR: lsi: reading /dev/sdo[Input/output error] > ERROR: nvidia: reading /dev/sdo[Input/output error] > ERROR: pdc: reading /dev/sdo[Input/output error] > ... > > ERROR: sil: reading /dev/sdf[Input/output error] > ERROR: via: reading /dev/sdf[Input/output error] > ERROR: asr: reading /dev/sde[Input/output error] > ERROR: ddf1: reading /dev/sde[Input/output error] > ERROR: ddf1: reading /dev/sde[Input/output error] > ERROR: hpt37x: reading /dev/sde[Input/output error] > ERROR: hpt45x: reading /dev/sde[Input/output error] > ERROR: isw: reading /dev/sde[Input/output error] > ERROR: jmicron: reading /dev/sde[Input/output error] > ERROR: lsi: reading /dev/sde[Input/output error] > ERROR: nvidia: reading /dev/sde[Input/output error] > ERROR: pdc: reading /dev/sde[Input/output error] > ERROR: pdc: reading /dev/sde[Input/output error] > ERROR: pdc: reading /dev/sde[Input/output error] > ERROR: pdc: reading /dev/sde[Input/output error] > ERROR: pdc: reading /dev/sde[Input/output error] > ERROR: pdc: reading /dev/sde[Input/output error] > > > etc. > > All those device /dev/sd...are part of a multipath devices, e.g.: > > > mpathh (3600a0b800047e4e4000008b54ebc91c3) dm-6 IBM,1818 FAStT > size=25G features='1 queue_if_no_path' hwhandler='1 rdac' wp=rw > |-+- policy='round-robin 0' prio=6 status=active > | `- 3:0:3:0 sdh 8:112 active ready running > `-+- policy='round-robin 0' prio=1 status=enabled > `- 4:0:2:0 sdo 8:224 active ghost running > mpathg (3600a0b800011573a00006da14a648a22) dm-0 IBM,1815 FAStT > size=4.8G features='1 queue_if_no_path' hwhandler='1 rdac' wp=rw > |-+- policy='round-robin 0' prio=6 status=active > | `- 4:0:1:1 sdn 8:208 active ready running > `-+- policy='round-robin 0' prio=1 status=enabled > `- 3:0:0:1 sdc 8:32 active ghost running > > > OS is booting but how can I get rid of those messages? Is it > udev-rules related? You have to deactivate dmraid with the "nodmraid" kernel command line option in order to avoid its scanning leading to the above error messages. Regards, Heinz > > Regards, > > Christian May (IBM) > > > > -- > dm-devel mailing list > dm-devel@redhat.com > https://www.redhat.com/mailman/listinfo/dm-devel -- =============================================================== Heinz Mauelshagen +49 2626 141200 Consulting Development Engineer FAX +49 2626 924446 Red Hat GmbH Am Sonnenhang 11 56242 Marienrachdorf Germany heinzm@redhat.com ===============================================================