Hi Team. We are currently in the process of changing the size of our cache pool. Currently it's set to 32 PGs and distributed weirdly on our OSDs. The system has tried automatically to scale it up to 256 PGs without succeeding and I read that cache pools are not automatically scaled so we are in the process of scaling. Our plan is to remove the old one and create a new one with more PGs. I've run the pool in readproxy now for a week so most of the objects should be available in cold storage but I want to be totally sure so we don't lose any data. I read in the documentation that you could remove the overlay and that would redirect clients to cold storage. Is a preferred strategy to remove the overlay and then run cache-flush-evict-all to clear it and then replace or should I be fine just to remove overlay and tiering and replace it with a new pool? Currently we have configured it to have a write caching of 0.5 hours and read cache of 2 days. ------ ceph osd pool set cephfs_data_cache cache_min_flush_age 1800 ceph osd pool set cephfs_data_cache cache_min_evict_age 172800 ---- The cache is still 25Tb in size and would be sad to lose if we have unwritten data. Best regards Daniel _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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