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Hi All,
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<div class="">So while I’m waiting for the purchase of new hardware to go thru, I’m trying to gather more data about the current workload. One of the things I’m trying to do is get a handle on the ratio of reads versus writes for my metadata.</div>
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<div class="">I’m using “mmdiag —iohist” … in this case “dm-12” is one of my metadataOnly disks and I’m running this on the primary NSD server for that NSD. I’m seeing output like:</div>
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<div class="">11:22:13.931117 W inode 4:299844163 1 0.448 srv dm-12 <redacted></div>
<div class="">11:22:13.932344 R metadata 4:36659676 4 0.307 srv dm-12 <redacted></div>
<div class="">11:22:13.932005 W logData 4:49676176 1 0.726 srv dm-12 <redacted> </div>
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<div class="">And I’m confused as to the difference between “inode” and “metadata” (I at least _think_ I understand “logData”)?!? The man page for mmdiag doesn’t help and I’ve not found anything useful yet in my Googling.</div>
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<div class="">This is on a filesystem that currently uses 512 byte inodes, if that matters. Thanks…</div>
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<div class="">Kevin</div>
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<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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