Unable to create cgroup for driver: No such device or address

[Neil Wilson]

Seeing these in syslog.

Mar 22 13:01:22 acer-aspire-5536 libvirtd: 13:01:22.522: warning : qemudStartup:1076 : Unable to create cgroup for driver: No such device or address
Mar 22 13:01:22 acer-aspire-5536 libvirtd: 13:01:22.818: warning : lxcStartup:1755 : Unable to create cgroup for driver: No such device or address

ProblemType: Bug
Architecture: amd64
Date: Mon Mar 22 13:02:37 2010
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100224.1)
Package: libvirt-bin 0.7.5-5ubuntu13
ProcEnviron:
 LANG=en_GB.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
SourcePackage: libvirt
Uname: Linux 2.6.32-16-generic x86_64

[C de-Avillez (hggdh2)]

Thank you for opening this bug and helping make Ubuntu better. I am setting this package Confirmed/Low: this is a -- at the moment -- known issue, see http://<email address hidden>/msg15612.html for details.

Apart from the messages in the log (which should happen every time libvirtd is started), there are no issues.

[Mario Manno (manno)]

After mounting cgroup on /dev/cgroup the warning message disappeared.

/etc/fstab:
  cgroup /dev/cgroup cgroup defaults 0 0

installed:
ii libvirt-bin 0.7.5-5ubuntu27 the programs for the libvirt library
ii lxc 0.6.5-1 Linux containers userspace tools

[Chris Lee-Messer (cleemesser)]

In my install of lucid x86_64 /dev/cgroup doesn't exist by default. I followed this reference::

    http://<email address hidden>/msg15612.html

And did::

   mkdir /dev/cgroup

   # then tested with this
   mount -t cgroup none /dev/cgroup -o cpu,memory,devices

before entering things in my /etc/fstab

[flickerfly (josiah-ritchie)]

For anonymous users this link doesn't display because something thinks it is an email address.

Remove spaces from this url to get it right. (hope this works)

http://www.mail-archive.com/libvir-list @ redhat.com/msg15612.html

[randomubuntuguy (john4lists)]

thanks. I followed the post above https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/544146/comments/4
and it worked for me. i saw a patch here. "http://twitter.com/share?via=themailarchive&count=horizontal&text=Re:%20[libvirt]%20Unable%20to%20create%20cgroup%20for%20driver%20#libvirlistATredhat" "http://<email address hidden>/msg15641.html" "http://www.mail-archive.com/libvir-list\@redhat.com/msg15641.html"

[Serge Hallyn (serge-hallyn)]

Is anyone still seeing this problem? (I would think so, but it's possible that it was quietly fixed upstream)

Is there any reason not to add a Suggests: cgroup-lite | cgroup-bin ?

[Launchpad Janitor (janitor)]

This bug was fixed in the package libvirt - 0.9.7-2ubuntu4

---------------
libvirt (0.9.7-2ubuntu4) precise; urgency=low

  * debian/apparmor/usr.sbin.libvirtd:
    - allow access to /etc/libvirt/hooks/** (LP: #891472)
    - #include <local/usr.sbin.libvirtd> for site-local customizations
  * debian/control: Suggest cgroup-lite | cgroup-bin (LP: #544146)
  * debian/patches/ubuntu/apparmor-allow-tunnelled-migration-2.patch:
    Warn but don't error out when we can't find a pathname for a file.
    This is needed to support tunnelled migration. (LP: #869553)
 -- Serge Hallyn <email address hidden> Fri, 02 Dec 2011 11:50:47 -0600