[question]qemu: any plan to support ivshmem-plain migration?
Wangxin (Alexander, Cloud Infrastructure Service Product Dept.)
wangxinxin.wang at huawei.com
Tue Jul 7 06:38:14 UTC 2020
> -----Original Message-----
> From: Daniel P. Berrangé [mailto:berrange at redhat.com]
> Sent: Monday, July 6, 2020 9:48 PM
> To: Wangxin (Alexander, Cloud Infrastructure Service Product Dept.)
> <wangxinxin.wang at huawei.com>
> Cc: libvir-list at redhat.com; mkletzan at redhat.com; Huangweidong (C)
> <weidong.huang at huawei.com>
> Subject: Re: [question]qemu: any plan to support ivshmem-plain migration?
> On Mon, Jul 06, 2020 at 01:14:04PM +0000, Wangxin (Alexander, Cloud
> Infrastructure Service Product Dept.) wrote:
> > Hi, Martin
> > Ivshmem-plain device support property role with 'master'(master=on) or
> > 'peer'(master=off, default mode), which controls to copy the shared memory
> on migration to the destination host or not.
> > https://git.qemu.org/?p=qemu.git;a=blob;f=docs/system/ivshmem.rst;h=b0
> > 3a48afa3ae7258bbe43490180fc5732b1f6c8c;hb=HEAD
> > And libvirt does not support to configure 'role' yet, see msg
> > https://www.redhat.com/archives/libvir-list/2016-August/msg00591.html
> > Qemu use 'master=off' as ivshmem-plain default property, the guest create
> by libvirt api can't be migrated now.
> > Do you have an plan to support the property 'role' and ivshmem-palin
> I would assume no one is actively working on it since it is 4 years since that
> quoted message. If you wish to try to implement it, we'll review any patches.
Sure, I would like to do it.
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