[dm-devel] Unable to deactivate lv, pehaps due to semaphore problem...

[Zdenek Kabelac]

Dne 27.11.2014 v 17:46 Gianluca Cecchi napsal(a):
> On Thu, Nov 27, 2014 at 5:35 PM, Zdenek Kabelac <zkabelac at redhat.com
> <mailto:zkabelac at redhat.com>> wrote:
>
>
>
>     As I've been pointed our cgroups could play some role -
>
>
> mhh I don't think I'm using Control Groups at all....
> [root at orapr2 ~]# rpm -qa |grep group
> [root at orapr2 ~]#
>
> [root at orapr2 ~]# ll /etc/cgconfig.conf
> ls: cannot access /etc/cgconfig.conf: No such file or directory
>
>
>     so lets repeat with  /proc/*/mountinfo
>
>
> [root at orapr2 ~]# cat /proc/*/mountinfo > /tmp/proc.log
> cat: /proc/33700/mountinfo: Invalid argument
> cat: /proc/33735/mountinfo: No such file or directory
>
> [root at orapr2 ~]# wc -l /tmp/proc.log
> 55050 /tmp/proc.log
>
>   [root at orapr2 ~]# grep 253:49 /tmp/proc.log
> [root at orapr2 ~]#
>
>
>     Also check  /proc/swaps ?
>
>
>   [root at orapr2 ~]# cat /proc/swaps
> FilenameTypeSizeUsedPriority
> /dev/sda2                               partition167772120-1
>

So I'm afraid you will need to open a RHEL support ticket to get all the 
diagnostic  (sosreport)  -  since if this is production system,
all further advices may lead to some problems.

Zdenek