Hi, It would be good to have the full output. Does iostat show the backing device performing I/O? Additionally, what does ceph -s show for cluster state? Also, can you check the logs on that OSD, and see if anything looks abnormal?
David On Thu, Dec 2, 2021 at 1:20 PM Zach Heise (SSCC) <he...@ssc.wisc.edu> wrote: > Good morning David, > > Assuming you need/want to see the data about the other 31 OSDs, 14 is > showing: > ID > CLASS > WEIGHT > REWEIGHT > SIZE > RAW USE > DATA > OMAP > META > AVAIL > %USE > VAR > PGS > STATUS > 14 > hdd > 2.72899 > 0 > 0 B > 0 B > 0 B > 0 B > 0 B > 0 B > 0 > 0 > 1 > up > > Zach > > On 2021-12-01 5:20 PM, David Orman wrote: > > What's "ceph osd df" show? > > On Wed, Dec 1, 2021 at 2:20 PM Zach Heise (SSCC) <he...@ssc.wisc.edu> > wrote: > >> I wanted to swap out on existing OSD, preserve the number, and then >> remove the HDD that had it (osd.14 in this case) and give the ID of 14 to a >> new SSD that would be taking its place in the same node. First time ever >> doing this, so not sure what to expect. >> >> I followed the instructions here >> <https://docs.ceph.com/en/latest/cephadm/services/osd/#remove-an-osd>, >> using the --replace flag. >> >> However, I'm a bit concerned that the operation is taking so long in my >> test cluster. Out of 70TB in the cluster, only 40GB were in use. This is a >> relatively large OSD in comparison to others in the cluster (2.7TB versus >> 300GB for most other OSDs) and yet it's been 36 hours with the following >> status: >> >> ceph04.ssc.wisc.edu> ceph orch osd rm status >> OSD_ID HOST STATE PG_COUNT REPLACE FORCE >> DRAIN_STARTED_AT >> 14 ceph04.ssc.wisc.edu draining 1 True True 2021-11-30 >> 15:22:23.469150+00:00 >> >> >> Another note: I don't know why it has the "force = true" set; the command >> that I ran was just Ceph orch osd rm 14 --replace, without specifying >> --force. Hopefully not a big deal but still strange. >> >> At this point is there any way to tell if it's still actually doing >> something, or perhaps it is hung? if it is hung, what would be the >> 'recommended' way to proceed? I know that I could just manually eject the >> HDD from the chassis and run the "ceph osd crush remove osd.14" command and >> then manually delete the auth keys, etc, but the documentation seems to >> state that this shouldn't be necessary if a ceph OSD replacement goes >> properly. >> >> _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
