[lustre-devel] LDLM behaviour question

Degremont, Aurelien degremoa at amazon.com
Mon Mar 8 06:09:26 PST 2021

Hi all,

I was not able to find a document giving this level of detail of LDLM behavior.
I have a basic question regarding compatibility between IBITS lock for the same fid.

Is it possible for the same MDT to lock the same FID, with 2 IBITS lock, with different bits? (ie: UPDATE vs LAYOUT)
What's the behavior is not working?

Second question: what happen when you call multiple times mdt_object_lock() for the same fid/same bits on the same MDT?



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