Re: MDS crash - FAILED assert(omap_num_objs <= MAX_OBJECTS)

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Dear list,

Quoting Stefan Kooman (stefan@xxxxxx):

> I wonder if this situation is more likely to be hit on Mimic 13.2.6 than
> on any other system.
> 
> Any hints / help to prevent this from happening?

We have had this happening another two times now. In both cases the MDS
recovers, becomes active (for a few seconds), and crashes again. It won't
come out of this loop by itself. When put in deug mode "debug_mds =
10/10) we won't hit the bug and it stays active. After a few minutes we
disable debug (live, ceph tell mds.* config set debug_mds 0/0) and it
keeps running (Heisenbug)... until hours later when it crashes again and the story
repeats itself.

So unfortunately no more debug information available, but at least a
workaround to get it active again.

Gr. Stefan

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| BIT BV  https://www.bit.nl/        Kamer van Koophandel 09090351
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