Eugen, I didn't really think my cluster was eating itself, but I also didn't want to be in denial. Regarding the autoscaler, I really thought that it only went up - I didn't expect that it would decrease the number of PGs. Plus, I thought I had it turned off. I see now that it's off globally but enabled for this particular pool. Also, I see that the target PG count is lower than the current. I guess you learn something new every day. -Dave -- Dave Hall Binghamton University kdhall@xxxxxxxxxxxxxx 607-760-2328 (Cell) 607-777-4641 (Office) On Mon, Mar 29, 2021 at 7:52 AM Eugen Block <eblock@xxxxxx> wrote: > Hi, > > that sounds like the pg_autoscaler is doing its work. Check with: > > ceph osd pool autoscale-status > > I don't think ceph is eating itself or that you're losing data. ;-) > > > Zitat von Dave Hall <kdhall@xxxxxxxxxxxxxx>: > > > Hello, > > > > About 3 weeks ago I added a node and increased the number of OSDs in my > > cluster from 24 to 32, and then marked one old OSD down because it was > > frequently crashing. . > > > > After adding the new OSDs the PG count jumped fairly dramatically, but > ever > > since, amidst a continuous low level of rebalancing, the number of PGs > has > > gradually decreased to less by 25% from it's max value. Although I don't > > have specific notes, my perception is that the current number of PGs is > > actually lower than it was before I added OSDs. > > > > So what's going on here? It is possible to imagine that my cluster is > > slowly eating itself, and that I'm about to lose 200TB of data. It's also > > possible to imagine that this is all due to the gradual optimization of > the > > pools. > > > > Note that the primary pool is an EC 8 + 2 containing about 124TB. > > > > Thanks. > > > > -Dave > > > > -- > > Dave Hall > > Binghamton University > > kdhall@xxxxxxxxxxxxxx > > _______________________________________________ > > ceph-users mailing list -- ceph-users@xxxxxxx > > To unsubscribe send an email to ceph-users-leave@xxxxxxx > > > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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