Details: Hyper-V: Server 2012 (no R2) Kernel: 4.2.0-12-generic Daily build version: 01-Oct-2015
Same problem occurs to me on the latest iso. I've tried to disable apparmor but nothing changed. The second ideea was to disable hv-vss- daemon and it seems that there is a little improvement, meaning that less messages of error are shown, but the systemd-udev process is still consuming a lot of CPU. -- 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/1496927 Title: [Hyper-V] udev trying to modify owner and mode of /dev/vmbus/hv_vss Status in linux package in Ubuntu: Confirmed Status in linux source package in Wily: Confirmed Bug description: While testing Ubuntu 15.10 Wily Werewolf (development branch) 64 bit we found the below issue. Repro rate: 100% Repro details: Hyper-V: Server 2012 (no R2) - WS 2012 is the only affected platform Daily build version: 2015.09.10 Kernel: kernel 4.2.0-7-generic During the below event, we also noticed that system-udevd is constantly around 100% CPU on the VM, taking a lot of cycles. On Server 2012 we don't have the Live backup with VSS feature, so these messages should not occur in the first place. After 20 minutes we have over 3000 messages in the logs, all like below: Sep 14 17:43:33 ubuntu systemd-udevd[14292]: setting owner of /dev/vmbus/hv_vss to uid=0, gid=0 failed: No such file or directory Sep 14 17:44:00 ubuntu systemd-udevd[14292]: setting mode of /dev/vmbus/hv_vss to 020600 failed: No such file or directory Sep 14 17:44:00 ubuntu systemd-udevd[14292]: setting owner of /dev/vmbus/hv_vss to uid=0, gid=0 failed: No such file or directory Sep 14 17:44:01 ubuntu systemd-udevd[14292]: setting mode of /dev/vmbus/hv_vss to 020600 failed: No such file or directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1496927/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
