Things to check: 1. Check the network if the IP address change, if the cable is plugged-in
2. Check the data directory(/var/lib/ceph/), usually you would mount the osd data directory to a separate disk. It would be helpful if you can post the logs of ceph here. Best Regards Wei From: ceph-users-boun...@lists.ceph.com [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Dan Ryder (daryder) Sent: Friday, January 17, 2014 4:07 AM To: ceph-us...@ceph.com Subject: [ceph-users] Power Cycle Problems Hello, On two separate occasions I have lost power to my Ceph cluster. Both times, I had trouble bringing the cluster back to good health. I am wondering if I need to config something that would solve this problem? After powering back up the cluster, "ceph health" revealed stale pages, mds cluster degraded, 3/3 OSDs down. I tried to issue "sudo /etc/init.d/ceph -a start" but I got no output from the command and the health status did not change. I ended up having to re-install the cluster to fix the issue, but as my group wants to use Ceph for VM storage in the future, we need to find a solution. Please note I followed the Storage Cluster Quick Start for installation and did not make any Ceph config changes after. Any help would be appreciated. Thanks, Dan Dan Ryder ENGINEER.SOFTWARE ENGINEERING CSMTG Performance/Analytics <mailto:dary...@cisco.com> dary...@cisco.com Cisco Systems, Inc. 7100-8 Kit Creek Road PO Box 14987 27709-4987 Research Triangle Park United States <http://www.cisco.com/> Cisco.com Think before you print. This email may contain confidential and privileged material for the sole use of the intended recipient. Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient (or authorized to receive for the recipient), please contact the sender by reply email and delete all copies of this message. For corporate legal information go to: <http://www.cisco.com/web/about/doing_business/legal/cri/index.html> http://www.cisco.com/web/about/doing_business/legal/cri/index.html
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