what to do, if the migration of a machine is hanging with growing "cachemiss" number?
Jun 27 08:44:27 starting migration of VM 142 to node 'pve00' (192.168.1.9)
Jun 27 08:44:27 copying disk images
Jun 27 08:44:28 starting VM 142 on remote node 'pve00'
Jun 27 08:44:30 start remote tunnel
Jun 27 08:44:31 starting online/live migration on unix:/run/qemu-server/142.migrate
Jun 27 08:44:31 migrate_set_speed: 8589934592
Jun 27 08:44:31 migrate_set_downtime: 0.1
Jun 27 08:44:31 set migration_caps
Jun 27 08:44:31 set cachesize: 214748364
Jun 27 08:44:31 start migrate command to unix:/run/qemu-server/142.migrate
Jun 27 08:44:36 migration status: active (transferred 117734188, remaining 1959784448), total 2156732416)
Jun 27 08:44:36 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:38 migration status: active (transferred 353396270, remaining 1719996416), total 2156732416)
Jun 27 08:44:38 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:40 migration status: active (transferred 588103812, remaining 1480392704), total 2156732416)
Jun 27 08:44:40 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:42 migration status: active (transferred 822453164, remaining 1245388800), total 2156732416)
Jun 27 08:44:42 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:44 migration status: active (transferred 1054481433, remaining 1011896320), total 2156732416)
Jun 27 08:44:44 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:46 migration status: active (transferred 1284504655, remaining 781447168), total 2156732416)
Jun 27 08:44:46 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:48 migration status: active (transferred 1518494960, remaining 538394624), total 2156732416)
Jun 27 08:44:48 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:50 migration status: active (transferred 1753656065, remaining 299241472), total 2156732416)
Jun 27 08:44:50 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:52 migration status: active (transferred 1984896321, remaining 29282304), total 2156732416)
Jun 27 08:44:52 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:52 migration status: active (transferred 2003114118, remaining 11051008), total 2156732416)
Jun 27 08:44:52 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:56 migration status: active (transferred 2008808761, remaining 2695168), total 2156732416)
Jun 27 08:44:56 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 304 overflow 0
Jun 27 08:44:56 migration status: active (transferred 2018608451, remaining 0), total 2156732416)
Jun 27 08:44:56 migration xbzrle cachesize: 134217728 transferred 2943 pages 43 cachemiss 2690 overflow 0
Jun 27 08:44:57 migration status: active (transferred 2025271071, remaining 0), total 2156732416)
Jun 27 08:44:57 migration xbzrle cachesize: 134217728 transferred 209927 pages 548 cachemiss 4263 overflow 0
Jun 27 08:44:59 migration status: active (transferred 2026270446, remaining 0), total 2156732416)
Jun 27 08:44:59 migration xbzrle cachesize: 134217728 transferred 495018 pages 1521 cachemiss 4437 overflow 0
Jun 27 08:44:27 copying disk images
Jun 27 08:44:28 starting VM 142 on remote node 'pve00'
Jun 27 08:44:30 start remote tunnel
Jun 27 08:44:31 starting online/live migration on unix:/run/qemu-server/142.migrate
Jun 27 08:44:31 migrate_set_speed: 8589934592
Jun 27 08:44:31 migrate_set_downtime: 0.1
Jun 27 08:44:31 set migration_caps
Jun 27 08:44:31 set cachesize: 214748364
Jun 27 08:44:31 start migrate command to unix:/run/qemu-server/142.migrate
Jun 27 08:44:36 migration status: active (transferred 117734188, remaining 1959784448), total 2156732416)
Jun 27 08:44:36 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:38 migration status: active (transferred 353396270, remaining 1719996416), total 2156732416)
Jun 27 08:44:38 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:40 migration status: active (transferred 588103812, remaining 1480392704), total 2156732416)
Jun 27 08:44:40 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:42 migration status: active (transferred 822453164, remaining 1245388800), total 2156732416)
Jun 27 08:44:42 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:44 migration status: active (transferred 1054481433, remaining 1011896320), total 2156732416)
Jun 27 08:44:44 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:46 migration status: active (transferred 1284504655, remaining 781447168), total 2156732416)
Jun 27 08:44:46 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:48 migration status: active (transferred 1518494960, remaining 538394624), total 2156732416)
Jun 27 08:44:48 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:50 migration status: active (transferred 1753656065, remaining 299241472), total 2156732416)
Jun 27 08:44:50 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:52 migration status: active (transferred 1984896321, remaining 29282304), total 2156732416)
Jun 27 08:44:52 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:52 migration status: active (transferred 2003114118, remaining 11051008), total 2156732416)
Jun 27 08:44:52 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 0 overflow 0
Jun 27 08:44:56 migration status: active (transferred 2008808761, remaining 2695168), total 2156732416)
Jun 27 08:44:56 migration xbzrle cachesize: 134217728 transferred 0 pages 0 cachemiss 304 overflow 0
Jun 27 08:44:56 migration status: active (transferred 2018608451, remaining 0), total 2156732416)
Jun 27 08:44:56 migration xbzrle cachesize: 134217728 transferred 2943 pages 43 cachemiss 2690 overflow 0
Jun 27 08:44:57 migration status: active (transferred 2025271071, remaining 0), total 2156732416)
Jun 27 08:44:57 migration xbzrle cachesize: 134217728 transferred 209927 pages 548 cachemiss 4263 overflow 0
Jun 27 08:44:59 migration status: active (transferred 2026270446, remaining 0), total 2156732416)
Jun 27 08:44:59 migration xbzrle cachesize: 134217728 transferred 495018 pages 1521 cachemiss 4437 overflow 0