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Re: [Xen-users] Checkpointing

from [Christopher G. Stach II] [Permanent Link][Original]
To: Tracy R Reed <treed@xxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Checkpointing
From: "Christopher G. Stach II" <cgs@xxxxxxxxx>
Date: Thu, 29 Jun 2006 23:42:21 -0500
Cc: Chris Vaughan <supercomputer@xxxxxxxxx>, fedora-xen@xxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx, veillard@xxxxxxxxxx
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Tracy R Reed wrote:
> Christopher G. Stach II wrote:
>> Migration saves VM state and assumes that the filesystem does not
>> change.  Checkpointing would have to restore the filesystem to the same
>> point in time that the snapshot was taken of the VM.  Perhaps you could
>> swing it with CoW or something, but it doesn't work now.
> 
> So take an LVM snapshot of the filesystem also. Maintaining network
> state would seem to be the harder thing to me.
> 

There was talk of weaving Cruz into Xen:

http://www.hpl.hp.com/techreports/2005/HPL-2005-66.pdf

-- 
Christopher G. Stach II

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