Frank Schilder <frans@dtu.dk> writes:
To me it looks like the structure of both maps is pretty much the same - or am I mistaken?
Yes, but you are not Marc Roos. Do you work on the same cluster or do you observe the same problem?
No, but we recently also noticed that rebuilding one pool ("ssd") influenced speed on other pools, which was unexpected.
In any case, here is a thread pointing to the crush tree/rule conversion I mentioned: https://lists.ceph.io/hyperkitty/list/ceph-users@ceph.io/thread/675QZ2JXXX4R...
Thanks will check it out.
The tool is "crushtool reclassify" and is recommended to use when upgrading from luminous to newer to convert crush rules to use device classes.
Same here - thanks a lot for the pointers! Cheers, Nico -- Modern, affordable, Swiss Virtual Machines. Visit www.datacenterlight.ch