Public bug reported:
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
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: hyper-v
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https://bugs.launchpad.net/bugs/1496927
Title:
[Hyper-V] udev trying to modify owner and mode of /dev/vmbus/hv_vss
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