Joseph, I'm sorry, I'd not seen the request for test. This is unfortunately non-trivial to test.
I agree, the next thing to do is to check and see if the issue is still present in upstream, the hwe for 16.04 and the current GA for 16.04. I dont expect that I will haev any time to look at this in the near future, hopefully someone else can test. Right now, I know the users of this virtual maas have just pinned to the old kernel as they need the system up. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1616949 Title: guest on bridge becomes inaccessible Status in linux package in Ubuntu: Confirmed Bug description: We have a "virtual maas" setup where we have a maas node on a linux bridge (created by libvirt) and some other number of nodes on that same bridge. the maas node then controls the other nodes turning them on and off and generally working maas-like magic. In this scenario on 16.04 with when deploying 3 or so nodes at a time, the maas node becomes inaccessible, and as it is the root device for iscsi storage of the installs, the nodes fail also. This occurred with xenial kernel (4.4). Reverting the kernel to 3.19 (linux-lts-vivid) kernel fixes the problem. https://launchpad.net/ubuntu/+source/linux-lts-vivid Specifically, the fixed kernel is $ dpkg-query --show | grep linux-.*3.19 linux-image-3.19.0-66-generic 3.19.0-66.74~14.04.1 linux-image-extra-3.19.0-66-generic 3.19.0-66.74~14.04.1 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-34-generic 4.4.0-34.53 ProcVersionSignature: Ubuntu 3.19.0-66.74~14.04.1-generic 3.19.8-ckt22 Uname: Linux 3.19.0-66-generic ppc64le AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Aug 25 12:10 seq crw-rw---- 1 root audio 116, 33 Aug 25 12:10 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.1-0ubuntu2.1 Architecture: ppc64el ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Thu Aug 25 14:37:07 2016 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub PciMultimedia: ProcEnviron: TERM=screen PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: root=/dev/mapper/mpath0-part2 ro console=hvc0 ProcLoadAvg: 0.40 0.28 0.46 1/1337 140794 ProcSwaps: Filename Type Size Used Priority /swap.img file 8388544 0 -1 ProcVersion: Linux version 3.19.0-66-generic (buildd@bos01-ppc64el-021) (gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) ) #74~14.04.1-Ubuntu SMP Tue Jul 19 19:54:47 UTC 2016 RelatedPackageVersions: linux-restricted-modules-3.19.0-66-generic N/A linux-backports-modules-3.19.0-66-generic N/A linux-firmware 1.157.3 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) cpu_cores: Number of cores present = 20 cpu_coreson: Number of cores online = 20 cpu_dscr: DSCR is 0 cpu_freq: min: 3.667 GHz (cpu 120) max: 3.691 GHz (cpu 0) avg: 3.689 GHz cpu_runmode: Could not retrieve current diagnostics mode, No kernel interface to firmware cpu_smt: SMT is off To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1616949/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp