<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">
Hi All,
<div class=""><br class="">
</div>
<div class="">Another one of those, \u201cI can open a PMR if I need to\u201d type questions\u2026</div>
<div class=""><br class="">
</div>
<div class="">We are in the process of combining two large GPFS filesystems into one new filesystem (for various reasons I won\u2019t get into here). Therefore, I\u2019m doing a lot of mmrestripe\u2019s, mmdeldisk\u2019s, and mmadddisk\u2019s.</div>
<div class=""><br class="">
</div>
<div class="">Yesterday I did an \u201cmmrestripefs <old fs> -r -N <my 8 NSD servers>\u201d (after suspending a disk, of course). Worked like it should.</div>
<div class=""><br class="">
</div>
<div class="">Today I did a \u201cmmrestripefs <new fs> -b -P capacity -N <those same 8 NSD servers>\u201d and got:</div>
<div class=""><br class="">
</div>
<div class="">
<div class="">mmrestripefs: The total number of PIT worker threads of all participating nodes has been exceeded to safely restripe the file system. The total number of PIT worker threads, which is the sum of pitWorkerThreadsPerNode of the participating nodes,
cannot exceed 31. Reissue the command with a smaller set of participating nodes (-N option) and/or lower the pitWorkerThreadsPerNode configure setting. By default the file system manager node is counted as a participating node.</div>
<div class="">mmrestripefs: Command failed. Examine previous error messages to determine cause.</div>
<div class=""><br class="">
</div>
<div class="">So there must be some difference in how the \u201c-r\u201d and \u201c-b\u201d options calculate the number of PIT worker threads. I did an \u201cmmfsadm dump all | grep pitWorkerThreadsPerNode\u201d on all 8 NSD servers and the filesystem manager node \u2026 they all say the same
thing:</div>
<div class=""><br class="">
</div>
<div class=""> pitWorkerThreadsPerNode 0</div>
<div class=""><br class="">
</div>
<div class="">Hmmm, so 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 > 31?!? I\u2019m confused...</div>
<br class="">
<div class="">
<div class="">\u2014</div>
<div class="">Kevin Buterbaugh - Senior System Administrator</div>
<div class="">Vanderbilt University - Advanced Computing Center for Research and Education</div>
<div class=""><a href="mailto:Kevin.Buterbaugh@vanderbilt.edu" class="">Kevin.Buterbaugh@vanderbilt.edu</a> - (615)875-9633</div>
<div class=""><br class="">
</div>
<br class="Apple-interchange-newline">
</div>
<br class="">
</div>
</body>
</html>