Open Stack

We have very strong interest in pursing this feature in the VMware
driver as well. I would like to see the revert instance feature
implemented at least.

When I used to work in multi-discipline roles involving operations it
would be common for us to snapshot a vm, run through an upgrade
process, then revert if something did not upgrade smoothly. This
ability alone can be exceedingly valuable in long-lived virtual
machines.

I also have some comments from parties interested in refactoring how
the VMware drivers handle snapshots but I'm not certain how much that
plays into this "live snapshot" discussion.

On Mon, Mar 10, 2014 at 12:04 AM, Bohai (ricky) <bohai at huawei.com> wrote:
>> -----Original Message-----
>> From: Alex Xu [mailto:xuhj at linux.vnet.ibm.com]
>> Sent: Sunday, March 09, 2014 10:04 PM
>> To: OpenStack Development Mailing List (not for usage questions)
>> Subject: Re: [openstack-dev] [nova] a question about instance snapshot
>>
>> Hi, Jeremy, the discussion at here
>> http://lists.openstack.org/pipermail/openstack-dev/2013-August/013688.html
>>
>
> I have a great interest in the topic too.
> I read the link you provided, and there is a little confusion for me.
> I agree with the security consideration in the discussion and memory snapshot can't be used for the cloning instance easily.
>
> But I think it's safe for the using for Instance revert.
> And revert the instance to a checkpoint is valuable for the user.
> Why we didn't use it for instance revert in the first step?
>
> Best regards to you.
> Ricky
>
>> Thanks
>> Alex
>> On 2014年03月07日 10:29, Liuji (Jeremy) wrote:
>> > Hi, all
>> >
>> > Current openstack seems not support to snapshot instance with memory and
>> dev states.
>> > I searched the blueprint and found two relational blueprint like below.
>> > But these blueprint failed to get in the branch.
>> >
>> > [1]: https://blueprints.launchpad.net/nova/+spec/live-snapshots
>> > [2]: https://blueprints.launchpad.net/nova/+spec/live-snapshot-vms
>> >
>> > In the blueprint[1], there is a comment,"
>> > We discussed this pretty extensively on the mailing list and in a design
>> summit session.
>> > The consensus is that this is not a feature we would like to have in nova.
>> --russellb "
>> > But I can't find the discuss mail about it. I hope to know why we think so ?
>> > Without memory snapshot, we can't to provide the feature for user to revert
>> a instance to a checkpoint.
>> >
>> > Anyone who knows the history can help me or give me a hint how to find the
>> discuss mail?
>> >
>> > I am a newbie for openstack and I apologize if I am missing something very
>> obvious.
>> >
>> >
>> > Thanks,
>> > Jeremy Liu
>> >
>> >
>> > _______________________________________________
>> > OpenStack-dev mailing list
>> > OpenStack-dev at lists.openstack.org
>> > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>> >
>> >
>> >
>>
>>
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