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<p class="MsoNormal">I have a client has had an issue where all of the nsd disks disappeared in the cluster recently. Not sure if it’s due to a back end disk issue or if it’s a reboot that did it. But in their PMR they were told that all that data is lost
now and that the disk headers didn’t appear as GPFS disk headers. How on earth could something like that happen? Could it be a backend disk thing? They are confident that nobody tried to reformat disks but aren’t 100% sure that something at the disk array
couldn’t have caused this. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there an easy way to see if there is still data on these disks?<o:p></o:p></p>
<p class="MsoNormal">Short of a full restore from backup what other options might they have?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The mmlsnsd -X show’s blanks for device and device type now.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"># mmlsnsd -X<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Disk name NSD volume ID Device Devtype Node name Remarks
<o:p></o:p></p>
<p class="MsoNormal">---------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal">INGEST_FILEMGR_xis2301 0A23982E57FD995D - - ingest-filemgr01.a.fXXXXXXX.net (not found) server node<o:p></o:p></p>
<p class="MsoNormal">INGEST_FILEMGR_xis2301 0A23982E57FD995D - - ingest-filemgr02.a.fXXXXXXX.net (not found) server node<o:p></o:p></p>
<p class="MsoNormal">INGEST_FILEMGR_xis2302 0A23982E57FD9960 - - ingest-filemgr01.a.fXXXXXXX.net (not found) server node<o:p></o:p></p>
<p class="MsoNormal">INGEST_FILEMGR_xis2302 0A23982E57FD9960 - - ingest-filemgr02.a.fXXXXXXX.net (not found) server node<o:p></o:p></p>
<p class="MsoNormal">INGEST_FILEMGR_xis2303 0A23982E57FD9962 - - ingest-filemgr01.a.fXXXXXXX.net (not found) server node<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#253773"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#253773">Mark</span></b><o:p></o:p></p>
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