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Re: [Qemu-devel] [PATCH for-2.4 0/3] Migration regressions with Xen.
From: |
Juan Quintela |
Subject: |
Re: [Qemu-devel] [PATCH for-2.4 0/3] Migration regressions with Xen. |
Date: |
Thu, 30 Jul 2015 13:06:29 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) |
Anthony PERARD <address@hidden> wrote:
> This is a critical issue for Xen as migration either with the same version
> of QEMU, or from a previous version of QEMU is broken.
>
> Any suggestion on how to move forward?
Will send a pull requset tomorrow.
Thinking about creating a single function that is called for all needed
places, just to avoid this problem in the future.
Thanks, Juan.
>
> On Tue, Jul 28, 2015 at 04:54:42PM +0100, Anthony PERARD wrote:
>> Hi,
>>
>> We've spotted several regression which prevent migration with Xen using the
>> same version of QEMU or from a previous version of QEMU (tryied with 2.2).
>>
>> Regression have been introduce by at least:
>> - df4b1024526cae3479da3492d6371fd4a7324a03
>> migration: create new section to store global state
>> - 61964c23e5ddd5a33f15699e45ce126f879e3e33
>> migration: Add configuration section
>>
>> The first patch would fix the default case when we use the machine 'xenfv'.
>>
>> But we can also use the machine 'pc' and I don't know how to fix this case.
>> The second and third patches are a step in the direction of fixing
>> migration with the machine 'pc'.
>>
>> I have not look at save/restore for PV guest yet.
>>
>> Thanks,
>>
>> Anthony PERARD (3):
>> migration: Fix regretion for xenfv machine.
>> migration: Fix global state with Xen.
>> migration: Add configuration section to vmstate with xen.
>>
>> hw/i386/pc_piix.c | 3 +++
>> include/migration/migration.h | 1 +
>> migration/migration.c | 7 +++++++
>> migration/savevm.c | 6 ++++++
>> 4 files changed, 17 insertions(+)