Greetings K Hildebrand! Running Lustre 2.12.5 on the clients I have observed the same behavior. On some OSTs, the osc.*.cur_grants_bytes drop to the mid-3000's! That is lower than the 700000 numbers displayed in the posts of others on this list. Concurrently, the same OSTs displaying the low cur_grants_bytes low numbers displayed non-zero numbers in num_dirty_bytes (I think that is the param; not at my desk. It is in the same dir as cur_grant_bytes) I did issue "lctl set_param osc.*.grant_shrink=0" on the clients. The only effect I observed from this setting is that the osc.*.num_dirty_bytes were now always zero, but the cur_grant_bytes numbers were still decreasing although the decrease was much less than without the osc.*.grant_shrink=0 setting.
Any additional guidance is greatly appreciated. Cheers, megan
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