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From Guo Star <ghxand...@gmail.com>
Subject Re: Cloudstack operations and Ceph RBD in degraded state
Date Wed, 01 Oct 2014 07:33:52 GMT
So critical ! I will do a test on cloudstack 4.4 + KVM + RBD, and focus on
this case.

2014-10-01 15:21 GMT+08:00 Indra Pramana <indra@sg.or.id>:

> Dear all,
>
> Anyone using CloudStack with Ceph RBD as primary storage? I am using
> CloudStack 4.2.0 with KVM hypervisors and Ceph latest stable version of
> dumpling.
>
> Based on what I see, when Ceph cluster is in degraded state (not
> active+clean), for example due to one node is down and in recovering
> process, it might affect CloudStack operations. For example:
>
> - Stopped VM cannot be started, because it says cannot find suitable
> storage pool.
>
> - Disconnected host cannot be reconnected easily, even after restarting
> agent and libvirt on agent side, and restarting management server on the
> server side. Need to keep on trying and suddenly it will be connected/up by
> itself.
>
> Once Ceph has recovered and back to active+clean state, then CloudStack
> operations will be back to normal. Host agents will be up, and VMs can be
> started.
>
> Anyone seeing similar behaviour?
>
> Looking forward to your reply, thank you.
>
> Cheers.
>

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