Hi Konstantin, Many thanks for your response! That is the funny part: the logs on both hosts do not indicate that anything happened to any devices at all, those related to the OSDs which failed to start or otherwise. The only useful message was from the OSD debug logs: "debug -3> 2023-01-25T23:07:52.990+0000 7f7c8b66e700 -1 bdev(0x5619bf0ce400 /var/lib/ceph/osd/ceph-3/block) _aio_thread got r=-1 ((1) Operation not permitted)". It was the same for all 3 affected OSDs on 2 different hosts and went away after I rebooted the hosts, then I had no issues restarting these OSDs multiple times after the reboot. /Z On Thu, 26 Jan 2023 at 05:41, Konstantin Shalygin <k0ste@xxxxxxxx> wrote: > Hi Zakhar, > > On 26 Jan 2023, at 08:33, Zakhar Kirpichenko <zakhar@xxxxxxxxx> wrote: > > Jan 25 23:07:53 ceph01 bash[2553123]: > > /home/jenkins-build/build/workspace/ceph-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos8/DIST/centos8/MACHINE_SIZE/gigantic/release/16.2.11/rpm/el8/BUILD/ceph-16.2.11/src/blk/kernel/ > KernelDevice.cc <http://kerneldevice.cc/>: > 604: ceph_abort_msg("Unexpected IO error. This may suggest HW issue. Please > check your dmesg!") > > > You can check your kmesg for a messages via `journalctl -kl > --since=yesterday` to see what actually happened with this device > > > k > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx