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Re: [Xen-users] Re: cLVM on Debian/Lenny

To: Olivier Le Cam <Olivier.LeCam@xxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Re: cLVM on Debian/Lenny
From: Jan Kalcic <jandot@xxxxxxxxxxxxxx>
Date: 2009年4月20日 14:08:47 +0200
Cc: Ferenc Wagner <wferi@xxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx, Thiago Camargo Martins Cordeiro <thiagocmartinsc@xxxxxxxxx>, Javier Guerra <javier@xxxxxxxxxxx>
Delivery-date: 2009年4月20日 05:09:05 -0700
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Olivier Le Cam wrote:
> Hi -
>
> Thiago Camargo Martins Cordeiro wrote:
>> Yes! Please! Share your entire procedure and conf files!
>>
>> -
>> Thiago
>>
>> 2009年4月17日 Javier Guerra <javier@xxxxxxxxxxx <mailto:javier@xxxxxxxxxxx>>
>>
>> On Fri, Apr 17, 2009 at 8:22 AM, Olivier Le Cam
>> <Olivier.LeCam@xxxxxxxxxxxxxxxxxxxxx
>> <mailto:Olivier.LeCam@xxxxxxxxxxxxxxxxxxxxx>> wrote:
>> > Feel free to contact me if you need instructions or want to get a
>> copy of
>> > the clvm deb package with openais for lenny on amd64.
>>
>> sure, please tell your procedure.
>
> There you are:
> http://h2o.glou.fr/post/2009/04/20/clvm-openais-on-Debian/Lenny 
>
Thanks, that's very interesting.
A stupid question just to better understand how cLVM works. Forgive me.
I think of cLVM as the LVM with the cluster extension. Any setting on a
shared storage is visible by all the nodes of the cluster.
But what exactly does this mean? At which level (VG or LV) does the
locking library work? Can I enable (active) the same VG on different
nodes? If yes, how cLVM prevent split-brain? I would eventually be able
to load a LV only on one node?
Thanks,
Jan
Can I balance the load running the VMs on several nodes?
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