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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Alvaro,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I have also opened a ticket with RedHat for the same reasons on rhel5u6 and a DS5020 and a DS3524 which I believe they are both active/active and multipath seems to treat them as active/passive, but I guess this is for another mailing list.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Raúl </span></b><span lang=ES-TRAD style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> linux-cluster-bounces@redhat.com [mailto:linux-cluster-bounces@redhat.com] <b>On Behalf Of </b>Alvaro Jose Fernandez<br><b>Sent:</b> Wednesday, June 15, 2011 1:15 PM<br><b>To:</b> linux clustering<br><b>Subject:</b> Re: [Linux-cluster] Cluster Failover Failed<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>DOC-35489 only partionally approaches the problem. I have it too, on a passive/active IBM DS4000 array and RHEL5.5. I've excluded from lvm.conf any SAN partitions as per the note (and also made a new initrd boot, as lvm.conf is included at boot time as the / partition I have it LVM'ed) , but messages still apears on bootup. They always dissapear when multipathd service starts and its scsi_dh_rdac discipline is loaded.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Even opened a case with Redhat, and obtained the same response (but not workaround): "it's entirely harmless, they are normal".<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>Alvaro<o:p></o:p></span></p><p class=MsoNormal><span lang=ES style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'><o:p> </o:p></span></p><div><div class=MsoNormal align=center style='text-align:center'><span lang=ES><hr size=2 width="100%" align=center></span></div><p class=MsoNormal><b><span lang=ES style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De:</span></b><span lang=ES style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> linux-cluster-bounces@redhat.com [mailto:linux-cluster-bounces@redhat.com] <b>En nombre de </b>Martinez-Sanchez, Raul<br><b>Enviado el:</b> miércoles, 15 de junio de 2011 13:11<br><b>Para:</b> 'Linux-cluster@redhat.com'<br><b>Asunto:</b> Re: [Linux-cluster] Cluster Failover Failed</span><span lang=ES><o:p></o:p></span></p></div><p class=MsoNormal><span lang=ES><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Balaji,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>According to RedHat documentation some Storage Array Devices configured in active/passive mode and using multipath will display this I/O error messages, so this might also be your case (see <a href="https://access.redhat.com/kb/docs/DOC-35489">https://access.redhat.com/kb/docs/DOC-35489</a>), this link indicates that the messages are harmless and can be avoided following its instructions. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The logs you sent do not indicate anything related to fencing, so you might need to send the relevant info for that.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cheers,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Raúl<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> linux-cluster-bounces@redhat.com [mailto:linux-cluster-bounces@redhat.com] <b>On Behalf Of </b>Balaji S<br><b>Sent:</b> Tuesday, June 14, 2011 7:46 PM<br><b>To:</b> Linux-cluster@redhat.com<br><b>Subject:</b> [Linux-cluster] Cluster Failover Failed<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi,<o:p></o:p></p><div><p class=MsoNormal>In my setup implemented 10 tow node cluster's which running mysql as cluster service, ipmi card as fencing device.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>In my /var/log/messages i am keep getting the errors like below,<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal>Jun 14 12:50:48 hostname kernel: end_request: I/O error, dev sdm, sector 0<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:50:48 hostname kernel: sd 3:0:2:2: Device not ready: <6>: Current: sense key: Not Ready<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:50:48 hostname kernel: Add. Sense: Logical unit not ready, manual intervention required<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:50:48 hostname kernel: <o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:50:48 hostname kernel: end_request: I/O error, dev sdn, sector 0<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:50:48 hostname kernel: sd 3:0:2:4: Device not ready: <6>: Current: sense key: Not Ready<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:50:48 hostname kernel: Add. Sense: Logical unit not ready, manual intervention required<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:50:48 hostname kernel: <o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:50:48 hostname kernel: end_request: I/O error, dev sdp, sector 0<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: sd 3:0:0:1: Device not ready: <6>: Current: sense key: Not Ready<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: Add. Sense: Logical unit not ready, manual intervention required<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: <o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: end_request: I/O error, dev sdc, sector 0<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: printk: 3 messages suppressed.<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: Buffer I/O error on device sdc, logical block 0<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: sd 3:0:0:2: Device not ready: <6>: Current: sense key: Not Ready<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: Add. Sense: Logical unit not ready, manual intervention required<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: <o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: end_request: I/O error, dev sdd, sector 0<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: Buffer I/O error on device sdd, logical block 0<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: sd 3:0:0:4: Device not ready: <6>: Current: sense key: Not Ready<o:p></o:p></p></div><div><p class=MsoNormal>Jun 14 12:51:10 hostname kernel: Add. Sense: Logical unit not ready, manual intervention required<o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>when i am checking the multipath -ll , this all devices are in passive path.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Environment :<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>RHEL 5.4 & EMC SAN<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Please suggest how to overcome this issue. Support will be highly helpful.<o:p></o:p></p></div><div><p class=MsoNormal>Thanks in Advance<o:p></o:p></p></div><div><p class=MsoNormal> <br clear=all><br>-- <br>Thanks,<br>BSK<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div class=MsoNormal align=center style='text-align:center'><hr size=2 width="100%" align=center></div><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";color:gray'><br>**************************************************************************************<br>This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the <a href="mailto:postmaster@nds.com">postmaster@nds.com</a> and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary.<br><br>NDS Limited. 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