Hi Mazzystr, thank you very much for your suggestion! The OSDs did find the bluestore block device and I do not use any USB drives. All failed OSD are on SATA drives connected to AMD CPUs / Chipsets. It seams now clear that the problem is that one of the RocksDBs is corrupted on each of the failing OSD drives. The big question now is why? As Igor suggested I recreated the failed OSDs and now try to reproduce the problem with a higher log level. So that Igor and my be other can track down the real issue. Fortunately the data that was stored on the OSDs was just a copy of another storage server. So the data loss was not really a problem. best, Sebastian > On 29.12.2021, at 03:21, Mazzystr <mazzystr@xxxxxxxxx> wrote: > > Did you check the status of your osd softlinks? > > See this mail thread > https://lists.ceph.io/hyperkitty/list/ceph-users@xxxxxxx/thread/L47BFQPIPAA3J7P73N3HNHVWCVQTHNOB/ > > > Are you running disks over USB? If so you need to make sure the hub and devices don't go into power savings mode. USB can be a real pest. > > > Hope I'm replying in time to save you from a data loss event. > > /C > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx