In theory this could exist back to Xenial as well (the double cleanup is there), but the cleanup code was changed later which could affect the race. Also we so far got no reports on this pre Ocata/Zesty so for now do not push further back than Zesty. >From the Upstream/Redhat Tests it was also confirmed that pre libvirt 2.4 it >is not reproducible, that confirms our timeline of Zesty/Artful, but not >further back for now.
** Description changed: + [Impact] + + * VMs start to fail depending on a race around spice port allocation + + * Solution is the Backport of an upstream fix that avoids a double + release on the ports + + [Test Case] + + * TBD + + [Regression Potential] + + * It is race after all, so we might miss some corner cases in the + testing, but reviewing the patch and given the verifications so far it + should be safe. From the patch the change is like: + Old: Spice-Init -> Fail -> Release [...] QemuStop -> Release + ^ + If new alloc in this time it was released unintentionally + New: Spice-Init -> Fail [...] QemuStop -> Release + This eliminates the race, but still releases the port as intended. + + * This change only affects users of spice ports. + + [Other Info] + + * n/a + + --- + Using the UCA ocata release of libvirt we sporatically recieve this error message in nova-compute.log: 2017-06-12 14:32:54.359 19007 ERROR nova.compute.manager [instance: d1af2a13-0a53-4d9c-ada3-683e4973f28a] libvirtError: internal error: process exited while connecting to monitor: ((null):63256): Spice- Warning **: reds.c:2463:reds_init_socket: reds_init_socket: binding socket to 10.141.112.21:5900 failed Please backport the fix for the following bug into UCA ocata/pike releases: https://bugzilla.redhat.com/show_bug.cgi?id=1397440 The patch is documented here: https://www.spinics.net/linux/fedora/libvir/msg144093.html We've tested backporting this same fix using the ocata UCA libvirt 2.5.0-3ubuntu5~cloud0 source package and it fixes the problem for us. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1697729 Title: port allocator allocates the same SPICE port for multiple guests (race condition) To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1697729/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
