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<div class="">On Jul 5, 2021, at 09:05, David Cohen <<a href="mailto:cdavid@physics.technion.ac.il" class="">cdavid@physics.technion.ac.il</a>> wrote:</div>
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<div class="">Hi,</div>
<div class="">I'm using Lustre 2.10.5 and lately tried to add a new OST. <br class="">
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<div class="">The OST was formatted with the command below, which other than the index is the exact same one used for all the other OSTs in the system.<br class="">
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<div class="">mkfs.lustre --reformat --mkfsoptions="-t ext4 -T huge" --ost --fsname=local --index=0051 --param ost.quota_type=ug --mountfsoptions='errors=remount-ro,extents,mballoc' --mgsnode=10.0.0.3@tcp --mgsnode=10.0.0.1@tc</div>
p --mgsnode=10.0.0.2@tcp --servicenode=10.0.0.3@tcp --servicenode=10.0.0.1@tcp --servicenode=10.0.0.2@tcp /dev/mapper/OST0051<span style="font-family:monospace" class=""><br class="">
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Note that your "--index=0051" value is probably interpreted as an octal number "41", it should be "--index=0x0051" or "--index=0x51" (hex, to match the OST device name) or "--index=81" (decimal).</div>
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When trying to mount the with:<br class="">
mount.lustre /dev/mapper/OST0051 /Lustre/OST0051</div>
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<div class="gmail_signature" data-smartmail="gmail_signature">The system stays on 100% CPU (one core) forever and the mount never completes, not even after a week.</div>
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I tried tunefs.lustre --writeconf --erase-params on the MDS and all the other targets, but the behaviour remains the same.</div>
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<div>Cheers, Andreas</div>
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<div>Andreas Dilger</div>
<div>Lustre Principal Architect</div>
<div>Whamcloud</div>
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