Hi Eugen and Anthony, Thanks for your input, it's much appreciated. I had not spotted the rados purge command so I'll file that one away for the future. I agree that in this case the pool delete seems like the best option and I've done a test on our dev cluster with a pool of 2.5TB and a few hundred thousand objects. This caused only a tiny spike in our grafana graphs of one data point on 15sec samples. The mons are on SSD or nvme and we don't have the autoscaler turned on so I think we should be all good there. I expect to be deleting these pools by the end of the month so I will report back after I do so this thread isn't left hanging. Thanks, Rich On Fri, 7 Mar 2025 at 01:33, Eugen Block <eblock@xxxxxx> wrote: > > Hi Rich, > > I waited for other users/operators to chime in because it's been a > while since we deleted a large pool last time in a customer cluster. I > may misremember, so please take that with a grain of salt. But the > pool deletion I am referring to was actually on Nautilus as well. In a > small lab cluster I just did the same, trying to confirm my memories. > I would not recommend to delete the objects by looping over 'rados > ls'. Btw., there's a rados purge command which loops through the pool > for you: > > rados purge <pool-name> --yes-i-really-really-mean-it > > If you delete the pool itself (ceph osd pool delete), only the OSD's > DBs would have some more work to clean that up, but I believe it's the > best option here. But I'd rather have that confirmed by someone else. > > Regards, > Eugen > > > Zitat von Richard Bade <hitrich@xxxxxxxxx>: > > > Hi Everyone, > > We're reducing back down from multisite to a single rgw zone. This > > will mean that some pools will be unused so I'd like to delete them. > > However there are some objects and data remaining in the pool even > > though the buckets are all deleted. It's just shadow objects. All the > > actual data has been deleted. > > So my question is around performance impact of deleting a pool with > > data in it. Will ceph handle things nicely or will it try remove all > > that data at once? > > I'm on Nautilus 14.2.22 with all bluestore osds on spinning disks with > > nvme db. Pools are erasure coded k=4 m=2. > > I'm thinking it might be best to do rados ls and loop through rados rm > > the objects to control the speed. > > There is one mailing list thread from 7 years ago basically saying the > > same but I was wondering if anyone else had any input around this? > > > > Thanks, > > Rich > > _______________________________________________ > > 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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