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<p class=MsoNormal>As many of you may know, collectl has been providing
high-quality lustre performance stats from essentially day 1 of lustre and a large
following of users find it to be a valuable tool. I just learned that version
1.8.4 breaks collectl but I’m also sure it’s a pretty minor problem
to fix, but I’m not sure the best way is so I thought I’d ask the
experts.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>When collectl starts up, the default is to collect lustre
stats and so it needs to know whether or not lustre is installed and if not,
disable the collection of those stats. This is further complicated
because while lustre may be installed, it may not yet have been enabled or
filesystems mounted on clients. collectl IS smart enough to detect lustre
starting up and immediately start monitoring so it’s important to know if
it’s installed. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Currently, collectl can tell is lustre has been installed by
just checking for the presence of /lib/modules/*/kernel/net/lustre. This
test is only performed when collectl first starts up. Can someone tell me
if there is a similar check I can do that will work for clients/servers on all Linux
distros? I’ll keep the current test which is known to work on
previous lustre versions and simply look somewhere else if this test
fails. I also know a lot more will be changed with lustre 2.0 so am only
concerned with 1.8 at this time.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>-mark<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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