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I tried tunefs.lustre --erase-params --writeconf the targets. Guess
it is not great because the clients were not unmounted, but I made
sure they are not trying to connect.<br>
<br>
This makes it possible to mount the MDT, but when the first OST
mount starts the MDT has a lot of errors. After starting the second
OST the MDS crashes (syslog attached).<br>
<br>
Cheers,<br>
Hans Henrik<br>
<br>
<div class="moz-cite-prefix">On 10.03.2022 15.48, Hans Henrik Happe
via lustre-discuss wrote:<br>
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<blockquote type="cite"
cite="mid:48ebe410-de9e-3db4-f682-f0edfec2ad3a@nbi.dk">
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Sorry for all the mail load, but I hope this info can help
figuring out what's wrong and determine if this was caused by a
bug. I think<br>
<br>
I read the CONFIGS on the MDT with llog_reader. See attachments.<br>
<br>
Cheers,<br>
Hans Henrik<br>
<br>
<div class="moz-cite-prefix">On 10.03.2022 12.23, Hans Henrik
Happe via lustre-discuss wrote:<br>
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<blockquote type="cite"
cite="mid:c7617bc0-f725-3b9f-781f-69c524a8d3a9@nbi.dk">
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After upgrading to Lustre 2.12.8 I found that the first mount
after a reboot behaves differently:<br>
<br>
Mounting mds02/astro0 on /mnt/lustre/local/astro-MDT0000<br>
mount.lustre: mount mds02/astro0 at
/mnt/lustre/local/astro-MDT0000 failed: No space left on device<br>
<br>
And a different syslog output (attached syslog-0).<br>
<br>
Doing the mount again has this error:<br>
<br>
Mounting mds02/astro0 on /mnt/lustre/local/astro-MDT0000<br>
mount.lustre: mount mds02/astro0 at
/mnt/lustre/local/astro-MDT0000 failed: File exists<br>
<br>
And a syslog like the one first posted. Attached the new output
in syslog-1.<br>
<br>
Finally, stopping Lustre (Only MGS in this case) and the lnet
service does free resources making lustre_rmmod fail:<br>
<br>
# lustre_rmmod <br>
rmmod: ERROR: Module osp is in use<br>
<br>
<br>
Cheers,<br>
Hans Henrik<br>
<br>
<div class="moz-cite-prefix">On 10.03.2022 11.15, Hans Henrik
Happe via lustre-discuss wrote:<br>
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<blockquote type="cite"
cite="mid:61546aec-83b0-c770-06f5-f03042f70c3e@nbi.dk">
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Forgot to say this is Lustre 2.12.6 and CentOS 7.9
(3.10.0-1160.6.1.el7.x86_64).<br>
<br>
<div class="moz-cite-prefix">On 10.03.2022 10.27, Hans Henrik
Happe via lustre-discuss wrote:<br>
</div>
<blockquote type="cite"
cite="mid:276483eb-f80a-67f8-52c6-f1fe115dcb69@nbi.dk">Hi, <br>
<br>
A reboot of the MDS stalled and got forced reset. After that
the MDS would not start. The syslog is attached. <br>
<br>
I'm not sure what the "class_register_device())
astro-OST0002-osc-MDT0000" part is supposed to do but
astro-OST0002 is not mounted at this time. I guess this
comes from the MGS. <br>
<br>
Cheers, <br>
Hans Henrik<br>
<br>
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