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From Indra Pramana <in...@sg.or.id>
Subject Running snapshot caused host to be disconnected
Date Mon, 07 Oct 2013 11:18:20 GMT
Dear all,

I did some tests on snapshots since it's now supported for my Ceph RBD
primary storage in CloudStack 4.2. When I ran the snapshot for a particular
VM instance earlier, I noticed that this has caused the host (where the VM
is on) becomes disconnected.

Here's the excerpt from the agent.log:

http://pastebin.com/dxVV7stu

The management-server.log doesn't much showing anything other than
detecting that the host was down and HA is being activated:

http://pastebin.com/UeLiSm9K

Anyone can advise what is causing the problem? So far there is only one
user doing the snapshotting and it has caused issues to the host, I can't
imagine what if multiple users try to do snapshotting at the same time?

I read about snapshot job throttling which is described on the manual:

http://cloudstack.apache.org/docs/en-US/Apache_CloudStack/4.2.0/html/Admin_Guide/working-with-snapshots.html

But I am not too sure whether this will help to resolve the problem since
there is only one user trying to perform snapshot and we already encounter
the problem already.

Anyone can advise how I can troubleshoot further and find a solution to the
problem?

Looking forward to your reply, thank you.

Cheers.

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