[one-users] OpenNebula 3.4 with Clustered LVM

[Jaime Melis]

Hello Yves,

there was a big change from OpenNebula 3.2 to 3.4, and we pulled out the
LVM drivers temporarily. The new LVM drivers are already in place for the
next OpenNebula release 3.6 [1][2][3].

However, those new drivers will not work for as-is OpenNebula 3.4, you will
need to apply the following patch:

--- a/src/tm_mad/lvm/clone
+++ b/src/tm_mad/lvm/clone
-VM_ID=$3
+VM_DIR=$(basename `dirname $DST`)

Note that I haven't tested it with OpenNebula 3.4, but they should work
like that. If it doesn't, please let me know and I'll be glad to help.

[1] http://opennebula.org/documentation:rel3.6:lvm_ds
[2]
https://github.com/OpenNebula/one/tree/master/src/datastore_mad/remotes/lvm
[3] https://github.com/OpenNebula/one/tree/master/src/tm_mad/lvm

Cheers,
Jaime

On Thu, May 10, 2012 at 7:06 PM, Vogl, Yves <vogl at adesso-mobile.de> wrote:

>  Hi,
>
>  I've setup OpenNebula 3.4 together with 5 KVM hosts.
> Those 6 hosts are member of a clustered LVM.
>
>  The OpenNebula host holds the „Master“ image in form of a logical volume
> "/dev/vg1/master".
> Every KVM host synchronizes with this image and therefore has a local copy
> of this image represented by its own "/dev/vg1/master" volume.
>
>  Now I'd like OpenNebula to deploy a virtual machine by creating a new
> logical volume as LVM snapshot from /dev/vg1/master - manually it'll look
> like this on the KVM host:
>
>  # lvcreate -n vm01 -L40G -s /dev/vg1/master
>
>  When the virtual machine is removed, I just need a:
>
>  # lvremove -f /dev/vg1/vm01
>
>
>  I've read in the change logs of OpenNebula 3.2 that the tm_lvm driver
> was removed and superseded by the iSCSI driver.
> I'm clueless… iSCSI simply is not LVM…
>
>
>  My next step would be to create a custom transfer manage to realize the
> steps I need.
> But… do I really need to do this?
>
>
>  Help from someone who's running the same setup is greatly appreciated :-)
>
>
>  Thanks so far,
>
>  Yves
>
>
>
>
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> Users at lists.opennebula.org
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>
>


-- 
Jaime Melis
Project Engineer
OpenNebula - The Open Source Toolkit for Cloud Computing
www.OpenNebula.org | jmelis at opennebula.org
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