Re: [PATCH 0/6] refactor RDMA live migration based on rsocket API

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On Mon, Oct 07, 2024 at 08:45:07AM -0500, Michael Galaxy wrote:
> Hi,
> 
> On 10/7/24 03:47, Yu Zhang wrote:
> > !-------------------------------------------------------------------|
> >    This Message Is From an External Sender
> >    This message came from outside your organization.
> > |-------------------------------------------------------------------!
> > 
> > Sure, as we talked at the KVM Forum, a possible approach is to set up
> > two VMs on a physical host, configure the SoftRoCE, and run the
> > migration test in two nested VMs to ensure that the migration data
> > traffic goes through the emulated RDMA hardware. I will continue with
> > this and let you know.
> > 
> Acknowledged. Do share if you have any problems with it, like if it has
> compatibility issues
> or if we need a different solution. We're open to change.
> 
> I'm not familiar with the "current state" of this or how well it would even
> work.

Any compatibility issue between versions of RXE (SoftRoCE) or between
RXE and real devices is a bug in RXE, which should be fixed.

RXE is expected to be compatible with rest RoCE devices, both virtual
and physical.

Thanks

> 
> - Michael
> 
> 
> > On Fri, Oct 4, 2024 at 4:06 PM Michael Galaxy <mgalaxy@xxxxxxxxxx> wrote:
> > > 
> > > On 10/3/24 16:43, Peter Xu wrote:
> > > > !-------------------------------------------------------------------|
> > > >     This Message Is From an External Sender
> > > >     This message came from outside your organization.
> > > > |-------------------------------------------------------------------!
> > > > 
> > > > On Thu, Oct 03, 2024 at 04:26:27PM -0500, Michael Galaxy wrote:
> > > > > What about the testing solution that I mentioned?
> > > > > 
> > > > > Does that satisfy your concerns? Or is there still a gap here that needs to
> > > > > be met?
> > > > I think such testing framework would be helpful, especially if we can kick
> > > > it off in CI when preparing pull requests, then we can make sure nothing
> > > > will break RDMA easily.
> > > > 
> > > > Meanwhile, we still need people committed to this and actively maintain it,
> > > > who knows the rdma code well.
> > > > 
> > > > Thanks,
> > > > 
> > > OK, so comments from Yu Zhang and Gonglei? Can we work up a CI test
> > > along these lines that would ensure that future RDMA breakages are
> > > detected more easily?
> > > 
> > > What do you think?
> > > 
> > > - Michael
> > > 
> 




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