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Posted to users@cloudstack.apache.org by el...@ukrdc.net on 2013/10/24 13:47:32 UTC

cloudstack 4.2 kvm snapshots troubles

Hello

We are having troubles with kvm snapshots. Our architecture: hosts 
CentOS 6.4, Primary storage - iscsi; secondary storage - nfs over iscsi 
from management.
For primary storage we have tried clvm and sharedmountpoint (gfs2, 
ocfs2) with the same result.
Everything is working fine until there is only one active host in cloud. 
When second host is added some snapshots fail with state 
"CreatedOnPrimary". Failed snapshots are visible with virsh.

virsh snapshot-list i-2-33-VM
  Name                 Creation Time             State
------------------------------------------------------------
  ee9302c6-bd00-4b93-aa77-f05d5a9a44c6 2013-10-24 13:56:24 +0300 running

VM with unsuccessful snapshot gets stuck until snapshot is manualy 
deleted. It can be easily deleted with virsh.
We have tried upgrading libvirt and/or qemu versions with the same 
result. Snapshots are running good only with nfs mounted primary 
storage.

I realy do not no if we are missing something or it is a bug of kvm.
Has somebody managed to setup kvm with working snapshots on clvm or 
sharedmountpoint?
We will appreciate any help. Thanks in advance.

Ivan Kozlov