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<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">Raśl<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>
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<p class="MsoNormal"><o:p> </o:p></p>
</div>
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<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>
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