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Re: [Qemu-devel] [PATCH v2] make windows notice media change
From: |
Filip Navara |
Subject: |
Re: [Qemu-devel] [PATCH v2] make windows notice media change |
Date: |
Wed, 29 Jul 2009 21:24:00 +0200 |
On Wed, Jul 29, 2009 at 9:18 PM, Filip Navara<address@hidden> wrote:
> On Wed, Jul 29, 2009 at 9:11 PM, Paul Brook<address@hidden> wrote:
>>> Why shouldn't we support loading version 2 snapshots? Afterall that's
>>> why we had the versioning in the first place.
>>
>> No it's not. Versioning was introduced to *prevent* loading old snapshots and
>> crashing or ending up with inconsistent guest state. I'm still unconvinced
>> that anything other than very short term backward compatibility is worthwhile
>> or even viable.
>
> I see it as a way to migrate a running guest to newer QEMU version, possibly
> even with live migration. In fact I used it quite often back in the day when
> snapshots were not part of qcow2 yet and when kqemu was still in its heydays.
>
BTW, why would there be the version parameter in the first place if it
wasn't supposed to load older versions?!
Best regards,
Filip Navara
- [Qemu-devel] [PATCH] make windows notice media change, Gleb Natapov, 2009/07/29
- [Qemu-devel] [PATCH v2] make windows notice media change, Gleb Natapov, 2009/07/29
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Filip Navara, 2009/07/29
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Paul Brook, 2009/07/29
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Filip Navara, 2009/07/29
- Re: [Qemu-devel] [PATCH v2] make windows notice media change,
Filip Navara <=
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Anthony Liguori, 2009/07/29
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Paul Brook, 2009/07/29
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Filip Navara, 2009/07/29
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Paul Brook, 2009/07/29
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Gleb Natapov, 2009/07/29
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Stefano Stabellini, 2009/07/30
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Paul Brook, 2009/07/30
- Re: [Qemu-devel] [PATCH v2] make windows notice media change, Anthony Liguori, 2009/07/29
- [Qemu-devel] Re: [PATCH v2] make windows notice media change, Juan Quintela, 2009/07/29
- [Qemu-devel] Re: [PATCH v2] make windows notice media change, Anthony Liguori, 2009/07/29