Thank you for your information. We will test this on Summit system with one of lf vms.
Once we finish it, will update status here.

shimono san

We have tested hot migration, but it was not successful...

[Status]

• From vm host perspective, it seemed like a vm guest was moved from one host to another.
    (i.e. with virsh list --all)

• After hot migration, there was no network connectivity to the vm guest.
    (I assume this is because of learned vm guest's MAC address stayed on the same port on pfs core and switch not being able to handle L2 communication...)

>- service connectability during live migration has not tested
>
Does this one mean what I see now?

I will do a little bit more research, but could you let us know the hardware connection among IPMU servers and network devices you tested hot migration?

P.S
This is just comment for [PFS-Soft-Subaru:423] . It might be obvious, but we need to redefine VM guest as we modify .xml file.

Again thank you for sharing this info, shimono-san.

oh,,,
never mind regarding MAC address...

`service connectability during live migration` is on a VM guest moving from one to another, not before migration started nor after migration finished.

target VM guests has two configurations, one is only with one network (PFS), another is with two networks (PFS, IPMU). PFS has two switches, cisco 2970 and fujitsu SR-S324, IPMU is by DELL 5426.
VM hosts on PFS network was connected through two switches, like hostA - 2970 (lacp) SR-S324 - hostB.

if you could not solve issue, please print `virsh dumpxml` and `brctl show` (here or subaruif ml for closed).

No demand now. Note that Yoshida-san has been hot-migration of a few servers at the summit.