> [...] After a few days, I have on our OSD nodes around 90MB/s > read and 70MB/s write while 'ceph -s' have client io as > 2,5MB/s read and 50MB/s write. [...]
This is one of my pet-peeves: that a storage system must have capacity (principally IOPS) to handle both a maintenance workload and a user workload, and since the former often involves whole-storage or whole-metadata operations it can be quite heavy, especially in the case of Ceph where rebalancing and scrubbing and checking should be fairly frequent to detect and correct inconsistencies. > Is this activity OK? [...] Indeed. Some "clever" people "save money" by "rightsizing" their storage so it cannot run at the same time the maintenance and the user workload, and so turn off the maintenance workload, because they "feel lucky" I guess, but I do not recommend that. :-). I have seen more than one Ceph cluster that did not have the capacity even to run *just* the maintenance workload. _______________________________________________ ceph-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
