Hi, maybe someone has a hint: I do have a cephalopod cluster (6 nodes, 144 OSDs), Cents 7.3 ceph 10.2.7.
I did a kernel update to the recent centos 7.3 one on a node and did a reboot. After that, 10 OSDs did not came up as the others. The disk did not get mounted and the OSD processes did nothing … even after a couple of minutes no more disks/OSDs showed up. So I did a ceph-disk activate-all. And all missing OSDs got back online. Questions: Any hints on debugging why the disk did not get online after the reboot? Thanks an regards . Götz
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