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| From: | Paolo Bonzini |
| Subject: | Re: [Qemu-devel] migration: new sections and backward compatibility. |
| Date: | Thu, 07 Jul 2011 17:23:52 +0200 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc15 Mnenhy/0.8.3 Thunderbird/3.1.10 |
On 07/07/2011 01:02 PM, Alexander Graf wrote:
I'd guess the best would be to have a special VMSTATE that means "broken old version doesn't send a section" which we can set for special -M?
No, the best would be to have a serious migration format, based for example on ASN.1 which Michael Tsirkin was playing with. We cannot keep bolting more and more stuff on top of the current protocol, especially since adding a new protocol is not that hard (old machine types can keep the old protocol).
That would of course not help with RHEL:).
At least for RHEL6 we can live with adding a few hacks here and there. Paolo
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