> On Jan 21, 2025, at 7:59 AM, Kasper Rasmussen <kasper_steengaard@xxxxxxxxxxx> wrote: > > 1 - Why do this result in such a high - objects degraded - percentage? I suspect that’s a function of the new topology having changed the mappings of multiple OSDs for given PGs. It’s subtle, but when you move hosts into rack CRUSH buckets, that’s a different set of inputs into the CRUSH hash function, so the mappings that come out are different, even though you haven’t changed the rules and would think that hosts are hosts. > 2 - Why do PGs get undersized? That often means that CRUSH can’t find a complete set of placements. In your situation maybe those would resolve themselves when you unleash the recovery hounds. _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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