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Date: Wed, 4 Jul 2012 12:07:08 +0200
From: Iustin Pop <ius...@google.com>
To: ganeti@googlegroups.com
Subject: Re: No LVM No DRBD recipe?
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On Tue, Jul 03, 2012 at 02:34:08PM -0700, Lou wrote:
> I had a cluster working a while back with sharedfile instances and no lvm 
> or drbd.  Now, however, I cannot reproduce those results.  Here is my 
> cluster info:

[…]

> However, whenever I try to create an instance:
> 
> gnt-instance add -t sharedfile -s 10G -o debootstrap+default testvm
> 
> I get this:
> 
> Node 'testnode.lan'  returned invalid value for 'vg_size': None
> 
> Why would it be trying to gather lvm info when it has no lvm disks, and how 
> can I fix it?

The root problem is caused by the fact that we don't have a
multi-storage model in Ganeti; i.e., the IAllocator interface only
supports one disk_free/disk_total set of properties, but not multiple.
As such, we don't support mixed or even "just" file-based storage. This
is a longer-term cleanup, etc.

However, your problem is more directly caused by the fact that you don't
pass a node (-n) and thus ask the IAllocator to compute one for you
(which it won't due to the above problem). By passing a node explicitly
it should work without problems.

regards,
iustin