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Date: Tue, 04 Mar 2014 10:05:47 +0100
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Subject: Re: [Qemu-devel] [RFC]VM live snapshot proposal
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To: Stefan Hajnoczi <stefanha@gmail.com>, "Huangpeng (Peter)" <peter.huangpeng@huawei.com>
Cc: "kwolf@redhat.com" <kwolf@redhat.com>, Pavel Hrdina <phrdina@redhat.com>, Zhanghailiang <zhang.zhanghailiang@huawei.com>, KVM devel mailing list <kvm@vger.kernel.org>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, Wenchao Xia <xiawenc@linux.vnet.ibm.com>

Il 04/03/2014 09:54, Stefan Hajnoczi ha scritto:
>> Is there any other proposals to implement vm-snapshot?
> See the discussion by Paolo and Andrea about post-copy migration, which
> adds kernel memory management features for tracking userspace page
> faults.  Perhaps you can use that infrastructure to trap guest writes.

That infrastructure actually traps guest reads too.  But it's fine, as 
they are a superset of guest writes and the image will still be consistent.

Paolo