[ceph-users] Re: Slow initial boot of OSDs in large cluster with unclean state

...

FWIW, having encountered these long-startup issues many times in the past on both HDD and QLC OSDs, I can pretty confidently say that throwing flash at the problem doesn't make it go away. Fewer issues with DB IOs contending with client IOs, but flapping can still occur during PG cleaning on QLC, at least on Pacific.

Interesting. Were these QLC OSDs collocated too? Or were they running DB on QLCs and data on HDDs?

Collocated in each case (i.e. wal/db was alongside data) Josh