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<p>Use 'zpool iostat -v ...'. You can review the man page for lots
of options, including latency statistics.</p>
<p>Cameron<br>
</p>
<br>
<div class="moz-cite-prefix">On 09/10/2018 11:21 AM, Zeeshan Ali
Shah wrote:<br>
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<div dir="ltr">Dear All,
<div><br>
</div>
<div>Suddenly our lustre installation become dead slow, copying
data from local source to lustre result around 20MB/sec before
it was above 600 MB.</div>
<div><br>
</div>
<div>i checked zfs status -xv and (all pool healths are ok)</div>
<div><br>
</div>
<div>1) How to check which OSTs are involved during data write
operation ?</div>
<div>2) How to check Meta data (read and write) stats ?</div>
<div>3) any other advice to drill down the reason ..</div>
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</div>
<div><br>
</div>
<div>/Zeeshan</div>
</div>
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