Subject: Re: [vserver] Mounting cgroup-hierarchy failed...
From: "Michael S. Zick" <mszick@morethan.org>
Date: Sat, 28 Jan 2012 11:02:33 -0600

On Sat January 28 2012, Jarry wrote:
> Hi,
> I just updated a few packages on my server, but after rebooting
> I get these messages:
> -----
> * Mounting cgroup-hierarchy ...
> mount: vserver already mounted or /dev/cgroup busy            [ !! ]
> * ERROR: util-vserver failed to start
> * ERROR: cannot start vservers.default as util-vserver would not start
> -----
> 
> So I tried to start it manually after boot, but it failed again:
> 
> -----
> obelix ~ # /etc/init.d/util-vserver start
>   * Creating directories for util-vserver ...                  [ ok ]
>   * Setting vshelper path to /usr/lib64/util-vserver/vshelper  [ ok ]
>   * Loading default device map ...                             [ ok ]
>   * Mounting cgroup-hierarchy ...
> mount: vserver already mounted or /dev/cgroup busy            [ !! ]
>   * ERROR: util-vserver failed to start
> obelix ~ #
> -----
> 
> So where is the problem? It all worked till yesterday, but now
> suddenly I can not start vservers anymore. I am not sure which
> packages I updated recently, but it was neither kernel nor
> vserver-patches/utils...
> 

If a *.deb based system:
less /var/log/dpkg.log
and/or
less /var/log/apt/history.log

If some other sort of package manager - google you distro info.

Mike
> Jarry
>