The question you should ask yourself, why you want to change/investigate this?
Because if scrubbing takes 10x longer thrashing seeks, my scrubs never finish in time (the default is 1 week). I end with e.g.
267 pgs not deep-scrubbed in time
On a 38 TB cluster, if you scrub 8 MB/s on 10 disks (using only numbers already divided by replication factor), you need 55 days to scrub it once. That's 8x larger than the default scrub factor, so I'll get warnings and my risk of data degradation increases. Also, even if I set the default scrub interval to 8x larger, it my disks will still be thrashing seeks 100% of the time, affecting the cluster's throughput and latency performance. Niklas _______________________________________________ ceph-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
