Kernel not configured for semaphores

[Frédéric Bron]

Hi,

Each time I turn off Fedora 24, I get the following message about 50
times printed in the console:

Kernel not configured for semaphores (System V IPC). Not using udev
synchronisation code.
device-mapper: remove ioctl on fedora_alpha-root failed: Device or resource busy
Command failed

What  does that mean?

Thanks,

Frédéric

[Ed Greshko]

On 12/12/16 13:35, Frédéric Bron wrote:
> Hi,
>
> Each time I turn off Fedora 24, I get the following message about 50
> times printed in the console:
>
> Kernel not configured for semaphores (System V IPC). Not using udev
> synchronisation code.
> device-mapper: remove ioctl on fedora_alpha-root failed: Device or resource busy
> Command failed
>
> What  does that mean?

It means you should follow this bugzilla....

https://bugzilla.redhat.com/show_bug.cgi?id=1359352

:-)

[Frédéric Bron]

> It means you should follow this bugzilla....
> https://bugzilla.redhat.com/show_bug.cgi?id=1359352

thanks but I do not see any workaround.

Probably just wait for an update.

Frédéric

[Ralf Corsepius]

On 12/12/2016 07:24 AM, Ed Greshko wrote:
> On 12/12/16 13:35, Frédéric Bron wrote:
> > Hi,
> >
> > Each time I turn off Fedora 24, I get the following message about 50
> > times printed in the console:
> >
> > Kernel not configured for semaphores (System V IPC). Not using udev
> > synchronisation code.
> > device-mapper: remove ioctl on fedora_alpha-root failed: Device or resource busy
> > Command failed
> >
> > What  does that mean?
>
> It means you should follow this bugzilla....
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1359352

I am inclined to believe this bug might not be related to the OP's 
problem - At least not the incarnation, I am facing ;)

What I am seeing on several machines, is larger series of the error 
message above rushing through very rapidly (<< 1sec) upon each shutdown 
on several machine, but so far I have not been experiencing shutdown 
hangers.

Ralf

[Ed Greshko]

On 12/12/16 14:40, Ralf Corsepius wrote:
> On 12/12/2016 07:24 AM, Ed Greshko wrote:
> > On 12/12/16 13:35, Frédéric Bron wrote:
> > > Hi,
> > >
> > > Each time I turn off Fedora 24, I get the following message about 50
> > > times printed in the console:
> > >
> > > Kernel not configured for semaphores (System V IPC). Not using udev
> > > synchronisation code.
> > > device-mapper: remove ioctl on fedora_alpha-root failed: Device or resource busy
> > > Command failed
> > >
> > > What  does that mean?
> >
> > It means you should follow this bugzilla....
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=1359352
>
> I am inclined to believe this bug might not be related to the OP's problem - At least
> not the incarnation, I am facing ;)
>
> What I am seeing on several machines, is larger series of the error message above
> rushing through very rapidly (<< 1sec) upon each shutdown on several machine, but so far
> I have not been experiencing shutdown hangers.

I think there are multiple ways this shows up and it isn't necessary that a shutdown hangs.

FWIW, in my case the shutdown is delayed until those messages pop up and then the shutdown
happens quite quickly.  It may, as noted in the bugzilla, have to do with the installation
of the VirtualBox bits in my case.

Other than the delay in shutting down, I've not noticed any "damage".

[Frédéric Bron]

> FWIW, in my case the shutdown is delayed until those messages pop up and then the shutdown
> happens quite quickly.  It may, as noted in the bugzilla, have to do with the installation
> of the VirtualBox bits in my case.

No virtualbox for me.

Frédéric

[Frédéric Bron]

> What I am seeing on several machines, is larger series of the error message
> above rushing through very rapidly (<< 1sec) upon each shutdown on several
> machine, but so far I have not been experiencing shutdown hangers.

same for me. Most of the time, no hang. I experienced hanging just one time.

Frédéric