unable to migrate: virPortAllocatorSetUsed:299 : internal error: Failed to reserve port 49153

[Vjaceslavs Klimovs]

Thank you for looking into this. Confirmed that with the patch the
migration succeeds.

On Mon, Oct 26, 2020 at 3:43 AM Michal Privoznik <mprivozn at redhat.com> wrote:
>
> On 10/26/20 9:39 AM, Michal Privoznik wrote:
> > On 10/12/20 4:46 AM, Vjaceslavs Klimovs wrote:
> >> On libvirt 6.8.0 and qemu 5.1.0, when trying to live migrate "error:
> >> internal error: Failed to reserve port" error is received and
> >> migration does not succeed:
> >>
> >> virsh # migrate cartridge qemu+tls://ratchet.lan/system --live
> >> --persistent --undefinesource --copy-storage-all --verbose
> >> error: internal error: Failed to reserve port 49153
> >>
> >> virsh #
> >>
> >
> > Sorry for not replying earlier. But this is a clear libvirt bug and I
> > think it's a regression introduced by the following commit:
> >
> > https://gitlab.com/libvirt/libvirt/-/commit/e74d627bb3b
> >
> > The problem is, if you have two or more disks that need to be copied
> > over to the destination, the @server_started variable is not set after
> > the first iteration of the "for (i = 0; i < vm->def->ndisks; i++)" loop.
> > I think this should be the fix:
> >
>
> Actually, you will need a second patch too. Here's the series:
>
> https://www.redhat.com/archives/libvir-list/2020-October/msg01358.html
>
> Michal
>