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Hi Damir,
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<div class="">Have you checked to see whether gssio4 might have a failing internal HD / SSD? Thanks…</div>
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<div class="">Kevin<br class="">
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<div class="">On Jul 10, 2019, at 7:16 AM, Damir Krstic <<a href="mailto:damir.krstic@gmail.com" class="">damir.krstic@gmail.com</a>> wrote:</div>
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<div dir="ltr" class="">Over last couple of days our reads and writes on our compute cluster are experiencing real slow reads and writes on one of the filesystems in the cluster. We are talking with IBM and have Sev. 1 ticket open, but I figured to ask here
about the warning message we are seeing in GPFS logs.
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<div class="">The cluster is configured as following:</div>
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<div class="">4 IO servers in the main gpfs cluster</div>
<div class="">700+ compute nodes in the gpfs cluster</div>
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<div class="">home filesystem is slow but projects filesystem seems to be fast. Not many waiters on the IO servers (almost none) but a lot of waiters on the remote cluster.</div>
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<div class="">The message that is giving us a pause is the following:</div>
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<span style="font-variant-ligatures:no-common-ligatures" class="">Jul 10 07:05:31 gssio4 mmfs: [N] Writing into file /var/mmfs/gen/LastLeaseRequestSent took 10.5 seconds</span></div>
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<div class=""><span style="font-variant-ligatures:no-common-ligatures" class="">Why is taking so long to write to to the local file?</span></div>
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<div class=""><span style="font-variant-ligatures:no-common-ligatures" class="">Thanks,</span></div>
<div class=""><span style="font-variant-ligatures:no-common-ligatures" class="">Damir</span></div>
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