We're most probably seeing the same while migrating a machine running balanceng but haven't thought this might be a qemu bug. Instead we're investigating with balanceng people.
Waiting for your further results. Greets, Stefan Excuse my typo sent from my mobile phone. > Am 06.06.2016 um 17:51 schrieb Peter Lieven <p...@kamp.de>: > >> Am 06.06.2016 um 15:32 schrieb Peter Lieven: >> Hi, >> >> during internal testing of Qemu 2.5.1.1 I found a vServer running Ubuntu >> 12.04 (kernel 3.13) and a slave SQL server to >> stop replicating from the master. This seems to be reproducible. It is >> possible to continue replication when issuing a slave stop / slave start. >> There is no error visible on the vServer. >> >> Has anyone a fix in mind that could be related to such an issue? >> >> Host kernel in Linux 4.4, Guest kernel 3.13. Guest driver is virtio-blk via >> iSCSI. Emulated vCPU is Westmere. > > After a lot of testing I found out that obviously thats no block driver > problem, but a regression in the virtio-net or the network stack. > > qemu_announce_self() is generating packets for all NICs, but it seems they > are no longer emitted. This worked at least in qemu-2.2.0 with > the same guest kernel and host kernel. > > I will continue debugging tomorrow why this happens. > > Peter >
