Thank you Eugen for looking into it! In short, it works. I'm using 16.2.10. What I did wrong was to remove the OSD, which makes no sense. Tony ________________________________________ From: Eugen Block <eblock@xxxxxx> Sent: April 28, 2023 06:46 AM To: ceph-users@xxxxxxx Subject: Re: import OSD after host OS reinstallation I chatted with Mykola who helped me get the OSDs back up. My test cluster was on 16.2.5 (and still mostly is), after upgrading only the MGRs to a more recent version (16.2.10) the activate command worked successfully and the existing OSDs got back up. Not sure if that's a bug or something else, but which exact versions are you using? Zitat von Eugen Block <eblock@xxxxxx>: > I found a small two-node cluster to test this on pacific, I can > reproduce it. After reinstalling the host (VM) most of the other > services are redeployed (mon, mgr, mds, crash), but not the OSDs. I > will take a closer look. > > Zitat von Tony Liu <tonyliu0592@xxxxxxxxxxx>: > >> Tried [1] already, but got error. >> Created no osd(s) on host ceph-4; already created? >> >> The error is from [2] in deploy_osd_daemons_for_existing_osds(). >> >> Not sure what's missing. >> Should OSD be removed, or removed with --replace, or untouched >> before host reinstallation? >> >> [1] >> https://docs.ceph.com/en/pacific/cephadm/services/osd/#activate-existing-osds >> [2] >> https://github.com/ceph/ceph/blob/0a5b3b373b8a5ba3081f1f110cec24d82299cac8/src/pybind/mgr/cephadm/services/osd.py#L196 >> >> Thanks! >> Tony >> ________________________________________ >> From: Tony Liu <tonyliu0592@xxxxxxxxxxx> >> Sent: April 27, 2023 10:20 PM >> To: ceph-users@xxxxxxx; dev@xxxxxxx >> Subject: import OSD after host OS reinstallation >> >> Hi, >> >> The cluster is with Pacific and deployed by cephadm on container. >> The case is to import OSDs after host OS reinstallation. >> All OSDs are SSD who has DB/WAL and data together. >> Did some research, but not able to find a working solution. >> Wondering if anyone has experiences in this? >> What needs to be done before host OS reinstallation and what's after? >> >> >> Thanks! >> Tony >> _______________________________________________ >> 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 _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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