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Hi All,
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<div class="">Another one of those, “I can open a PMR if I need to” type questions…</div>
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<div class="">We are in the process of combining two large GPFS filesystems into one new filesystem (for various reasons I won’t get into here). Therefore, I’m doing a lot of mmrestripe’s, mmdeldisk’s, and mmadddisk’s.</div>
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<div class="">Yesterday I did an “mmrestripefs <old fs> -r -N <my 8 NSD servers>” (after suspending a disk, of course). Worked like it should.</div>
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<div class="">Today I did a “mmrestripefs <new fs> -b -P capacity -N <those same 8 NSD servers>” and got:</div>
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<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>
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<div class="">So there must be some difference in how the “-r” and “-b” options calculate the number of PIT worker threads. I did an “mmfsadm dump all | grep pitWorkerThreadsPerNode” on all 8 NSD servers and the filesystem manager node … they all say the same
thing:</div>
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<div class=""> pitWorkerThreadsPerNode 0</div>
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<div class="">Hmmm, so 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 + 0 > 31?!? I’m confused...</div>
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<div class="">—</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>
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