Messages in this thread | | | Date | Fri, 12 Nov 2010 19:18:17 +0100 | Subject | Re: Mounting blkio cgroup hierarchy | From | Dhaval Giani <> |
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On Fri, Nov 12, 2010 at 6:13 PM, Ben Gamari <bgamari@gmail.com> wrote: > I've been trying to configure cgroups and have encountered some very > strange behavior. In particular, when I follow the instructions in > Documentation/cgroups/blkio-controller.txt I quickly reach an error, > > $ cd /mnt > $ sudo mkdir -p cgroups/blkio > $ # Confirm it's not already mounted: > $ cat /proc/mounts > rootfs / rootfs rw 0 0 > none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 > none /proc proc rw,nosuid,nodev,noexec,relatime 0 0 > none /dev devtmpfs rw,relatime,size=1993264k,nr_inodes=498316,mode=755 0 0 > none /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 > fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0 > /dev/disk/by-uuid/7d908a9f-fe46-4a82-bb2b-3fc108c96280 / ext4 rw,relatime,errors=remount-ro,barrier=1,data=ordered 0 0 > none /sys/kernel/debug debugfs rw,relatime 0 0 > none /sys/kernel/security securityfs rw,relatime 0 0 > none /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0 > none /var/run tmpfs rw,nosuid,relatime,mode=755 0 0 > none /var/lock tmpfs rw,nosuid,nodev,noexec,relatime 0 0 > /dev/sda1 /boot ext4 rw,relatime,barrier=1,data=ordered 0 0 > binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec,relatime 0 0 > gvfs-fuse-daemon /home/ben/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0 > $ sudo mount -t cgroup -o blkio none /mnt/cgroups/blkio > mount: special device none does not exist > > I've done quite a bit of Googling and yet it's very difficult to find > good information on configuring cgroups. I would use the libcg > toolset[1] but every attempt to configure it has ended in frustratingly > vague error messages. >
If you give us a hint with what error messages you are getting, at the very least we can work on fixing those up :-)
Dhaval
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