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Re: [Xen-devel] Domain save/migrate issue

  • To: Noam Taich <noam.taich@xxxxxxxxxxxx>
  • From: Jacob Gorm Hansen <jacobg@xxxxxxx>
  • Date: Wed, 15 Feb 2006 12:28:28 +0100
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Wed, 15 Feb 2006 11:40:43 +0000
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

On 2/14/06, Noam Taich <noam.taich@xxxxxxxxxxxx> wrote:

> This would allow the aforementioned domain save option to be LIVE also, and
> without wasting too much space,
> Which would enable live local checkpointing.


with my self-migration patch, I already have this functionality. In
the domain, I open a block device with O_DIRECT, and then a user-space
process take care of the live checkpointing to disk. A small
bootloader is prepended to the checkpoint, so that is can revive

You can see the source of such a user-space process here:


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