[one-users] CLVM datastore

[Nicolas AGIUS]

Hi,

I suggest you to look at the CXM drivers [1]. They has been designed to work on block device with CLVM and fiber-channel.

We are using a setup similar to yours, with Redhat Cluster Suite and Xen (no libvirt). There is some constraints, but it's working fine and allow live migration.

Cheers,
Nicolas AGIUS

[1] http://www.opennebula.org/software:ecosystem:cxm_drivers


--- En date de : Jeu 14.2.13, Kapetanakis Giannis <bilias at edu.physics.uoc.gr> a écrit :

De: Kapetanakis Giannis <bilias at edu.physics.uoc.gr>
Objet: Re: [one-users] CLVM datastore
À: "Jaime Melis" <jmelis at opennebula.org>
Cc: "Mihály Héder" <merlin at sztaki.hu>, "Users OpenNebula" <users at lists.opennebula.org>
Date: Jeudi 14 février 2013, 17h17

On 14/02/13 17:55, Jaime Melis wrote:
> Hi Giannis,
> 
> CLVM has many drawbacks due to snapshot not being supported in cluster mode, which is exactly what you're experiencing. I recommend you read this thread where Mihály discussed and explained very accurately their current LVM deployment:
> 
> http://lists.opennebula.org/pipermail/users-opennebula.org/2013-January/021686.html (the whole thread is very interesting)
> 
> We will improve the LVM drivers for the next release based on Mihály's feedback.
> 
> cheers,
> Jaime
> 

Thanks for the reply Jaime,

I'll give a try on shared_lvm drivers and will report back.

Just in case, I've been running a production setup where I run VMs on top of CLVM (with full live migration)
for about 1 year just by using Redhat's Cluster Tools and libvirt, virsh, virt-manager.

Each VM has it's own block devices (LVs on CLVM) backed by fibre-channel. No problems so far.

If you'd like me to test something with this setup, I have a couple of nodes that I use for testing
and I could try new code on them.

regards,

Giannis
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