[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] about live memory snapshot

From: Peter Xu
Subject: Re: [Qemu-devel] about live memory snapshot
Date: Mon, 2 Jul 2018 18:53:25 +0800
User-agent: Mutt/1.10.0 (2018-05-17)

On Sat, Jun 30, 2018 at 01:45:29AM +0000, Gonglei (Arei) wrote:
> Hi Peter,
> As we discussed in LC3 China, the current scheme of "migration to file" 
> can't fit on production environment, which will cause the snapshot file 
> bigger 
> and bigger when the guest is under enough memory pressure. We can't
> assume what size the snapshot file is.
> Pls have a look if we have a simple method to resolve the problem. :)

Yeah, it seems that the requirement of this live snapshot feature is
there for a long time but we haven't yet figured out a good way to
solve it.

> PS: the below link is zhanghailiang's scheme based on userfaultfd.
> https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg00664.html

Thanks for the pointer!

Just to mention that there is another ongoing work from Denis that
implemented similar feature but with mprotect() and a new
(to-be-proposed?) kvm interface:


Hopefully we can figure something out soon on the list.


Peter Xu

reply via email to

[Prev in Thread] Current Thread [Next in Thread]