forwarded 643580 https://github.com/poelzi/ulatencyd/issues/26
kthxbye
On Wed, Sep 28, 2011 at 01:22:36AM +0530, Ritesh Raj Sarraf wrote:
> Issue 1:
> ERROR: can't mount: /sys/fs/cgroup/cpu
> aborting...
>
>
> If cgroup is already mounted (in fstab), ulatencyd fails with the above
> message. Looks like on startup, it tries to mount cgroup.
>
>
> Please look at bug: 601757. It should be mounted by mountkernfs
AFAICT the issue is that ulatencyd tries to mount tmpfs on /sys/fs/cgroup
and then different cgroups (cpu, memory, blkio, ...) under diferrent
subfolders (/sys/fs/cgroup/cpu, /sys/fs/cgroup/memory, ...). But if cgroupfs
is already mounted on /sys/fs/cgroup (without subfolders) it hangs.
I forwarded the bug upstream, asking whether it would be possibile to
support the single mountpoint.
Cheers
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