Re: Power Cycle Problems

["Gao, Wei M" <wei.m.gao@xxxxxxxxx>]

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-bounces@xxxxxxxxxxxxxx [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of Dan Ryder (daryder)
Sent: Friday, January 17, 2014 4:07 AM
To: ceph-users@xxxxxxxx
Subject: 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 daryder@xxxxxxxxx	Cisco Systems, Inc. 7100-8 Kit Creek Road PO Box 14987 27709-4987 Research Triangle Park United States Cisco.com

 

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