Bug#595964: Please cherry-pick patch to mount cgroupfs at /sys/fs/cgroup
* Michael Biebl <biebl@debian.org> wrote:
> CCing Jon, as maintainer of libcgroup he might be interested in this
> discussion.
>
> Am 07.09.2010 23:12, schrieb Bastian Blank:
> > On Tue, Sep 07, 2010 at 10:54:04PM +0200, Michael Biebl wrote:
> >> On 07.09.2010 22:41, Bastian Blank wrote:
> >>> And what does this help? There are n cgroup filesystem hierarchies.
> >> Are you referring to cgroup fs like cpuset? They would be mounted below
> >> /sys/fs/cgroup.
> >
> > sysfs does not support mkdir. How will you mount _n_ different
> > hierarchies?
>
> In the thread I quoted, G-K H mentions that /sys/fs/cgroup would be a tmpfs.
I agree with not creating another top-level directory. I configured
libcgroup to mount cgroupfs under /mnt/cgroup as an initial solution,
but mounting in /sys/fs seems much more consistent with current
conventions.
> >>> As it is private to systemd anyway, the correct locations is somewhere
> >>> below /var/lib/
> >> As systemd requires the cgroupfs during early boot, /var/lib is not an option.
> >
> > There are other locations. /sys is system wide and not daemon specific.
> >
>
> I remember discussions, where to mount the cgroupfs [1], some while ago,
> and /sys was among the recommendations. More importantly though, it was
> said that we should see what the kernel folks do.
This discussion took place on the libcgroup mailing list as well [1],
posting here for reference. Many suggested somewhere under /sys, but I
don't believe a consensus was reached.
[1]: http://sourceforge.net/mailarchive/message.php?msg_id=20091104063005.GC3560%40balbir.in.ibm.com
Cheers
--
Jon
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