MDS internal op exportdir despite ephemeral pinning

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Hi all,

I have a question about ephemeral pinning on octopus latest. We have ephemeral pinning set on all directories that are mounted (well on all their parents), like /home etc. Every mount point of a ceph file system should, therefore, be pinned to a specific and fixed MDS rank. However, in the log I see a lot of slow ops warnings like this one:

slow request 33.765074 seconds old, received at 2022-11-16T11:30:28.340294+0100: internal op exportdir:mds.0:34770855 currently failed to wrlock, waiting

I don't understand why MDSes still export directories between each other. Am I misunderstanding the warning? What is happening here and why are these ops there? Does this point to a config problem?

Thanks for any explanations!
=================
Frank Schilder
AIT Risø Campus
Bygning 109, rum S14
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