From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Christie Subject: Re: Fwd: IO error on DM device Date: Thu, 30 Mar 2006 13:44:45 -0600 Message-ID: <442C352D.8010604@redhat.com> References: <39daa5689df1bf4a05a144891cc3563d@redhat.com> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <39daa5689df1bf4a05a144891cc3563d@redhat.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: device-mapper development Cc: Ryan O'Hara List-Id: dm-devel.ids Jonathan E Brassow wrote: > > Another observation is that we are not seeing any IO errors when the > same test is executed on SLES9 SP3/SP4. > I think Ryan's post is correct, but I wonder why the SLES9 is not returning errors. Was the SLES statement referring to the scsi errors you see in the log like this: Feb 1 11:47:45 apwtest52 kernel: SCSI error : <3 0 0 1> return code = 0x20000 or the dm-multipath and block layer messages Feb 1 11:48:40 apwtest52 kernel: device-mapper: dm-multipath: Failing path 8:32. Feb 1 11:48:40 apwtest52 kernel: Buffer I/O error on device dm-0, logical block 116940 u or both? Do you have the same dm-multipath settings (queue if no path, etc)? Is this is the qlogic qla2xxx driver? Are there qlogic guys on the list that would know if there are any differences between the SLES and RHEL drivers or are we going to have to dig in there? Are there differences between the SLES and RHEL dm multipath drivers? Does this occur with the upstream kernel?