Re: [Xen-users] Storage for migration

[Javier Guerra <javier@xxxxxxxxxxx>]

On Friday 28 July 2006 12:02 pm, Glenn W. Bach wrote:
> In order to do migrations, the systems need to share common file storage. I
> have two choices, SAN or NetApp. Can the disk images be located on NFS? If
> I use SAN, what is the typical configuration? Wouldn't it require something
> like GFS?

to get migrations, the storage for a VM must be equally accessible from both 
hosts; if you use file-backed storage, that means accessing a shared 
filesystem, typically NFS.  if you use block-level storage, that means 
accessing a shared block-storage, that's a SAN.

the shared block-storage must be partitioned somehow, the most 'linux' way to 
do it is LVM (the other way is to use LUNs on the block devices, don't know 
much about this).  it's more manageable to use CLVM, or EVMS-heartbeat, but 
that's all, you don't need the full GFS stack.

-- 
Javier

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