Hello, After patching my OSD servers with the latest Centos kernel and rebooting the nodes, all OSD drives moved to different positions. Before the reboot: Systemdisk: /dev/sda Journaldisk: /dev/sdb OSD disk 1: /dev/sdc OSD disk 2: /dev/sdd OSD disk 3: /dev/sde After the reboot: Systemdisk: /dev/sde journaldisk: /dev/sdb OSD disk 1: /dev/sda OSD disk 2: /dev/sdc OSD disk 3: /dev/sdd The result was that the OSD didn't start at boot-up and I had to manually activate them again. After rebooting OSD node 1 I checked the state of the Ceph cluster before rebooting node number 2. I found that the disks were not online and I needed to fix this. In the end I was able to do all the upgrades etc, but this was a big surprise to me. My idea to fix this is to use the Disk UUID instead of the dev name (/dev/disk/by-uuid/<uuid> instead of /dev/sda) when activating the disk. But I really don't know if this is possible. Could anyone tell me if I can prevent this issue in the future? -- Met vriendelijke groet / Best regards, Jan Hugo Prins Infra and Isilon storage consultant Better.be B.V. Auke Vleerstraat 140 E | 7547 AN Enschede | KvK 08097527 T +31 (0) 53 48 00 694 | M +31 (0)6 26 358 951 jprins@xxxxxxxxxxxx | www.betterbe.com This e-mail is intended exclusively for the addressee(s), and may not be passed on to, or made available for use by any person other than the addressee(s). Better.be B.V. rules out any and every liability resulting from any electronic transmission. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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