Issue with yum/systemd?

[Dave Johansen]

On Wed, Mar 11, 2015 at 6:40 AM, Zbigniew Jędrzejewski-Szmek <
zbyszek at in.waw.pl> wrote:

> On Tue, Mar 10, 2015 at 08:15:38PM -0700, Dave Johansen wrote:
> > On Tue, Mar 10, 2015 at 7:53 PM, Dave Johansen <davejohansen at gmail.com>
> > wrote:
> >
> > > On Tue, Mar 10, 2015 at 5:10 AM, Michal Schmidt <mschmidt at redhat.com>
> > > wrote:
> > >
> > >> On 03/10/2015 03:13 AM, Dave Johansen wrote:
> > >> > #0  0xb76debac in __kernel_vsyscall ()
> > >> > #1  0xb7510d03 in __waitpid_nocancel () from /lib/libpthread.so.0
> > >> > #2  0xb6fa4842 in rpmScriptRun () from /lib/librpm.so.3
> > >> > #3  0xb6f83c53 in runScript () from /lib/librpm.so.3
> > >> > #4  0xb6f8434f in runInstScript () from /lib/librpm.so.3
> > >> > #5  0xb6f8531b in rpmpsmRun () from /lib/librpm.so.3
> > >> > #6  0xb6f9a3cb in rpmteProcess () from /lib/librpm.so.3
> > >> > #7  0xb6fa1714 in rpmtsRun () from /lib/librpm.so.3
> > >> > [...]
> > >> > It looks like yum is waiting on some process.
> > >>
> > >> It's waiting for a package scriptlet to finish.
> > >>
> > >
> > > Here's the contents of the script that it's waiting on:
> > > if [ $1 -eq 0 ] ; then
> > >   # Package removal, not upgrade
> > >   systemctl --no-reload disable minetest at default.service > /dev/null
> 2>&1
> > > || :
> > >   systemctl stop minetest at default.service > /dev/null 2>&1 || :
> > > fi
> > >
> >
> > Sorry for the multiple emails. It's stuck on the call to stop the
> service.
> > When I run status, I prints the following:
> > . minetest at default.service - Minetest multiplayer server w/ default.conf
> > server config
> >    Loaded: loaded (/usr/lib/system/system/minetest at .service; disabled)
> >    Active: inactive (dead)
> >
> > Any recommendations on what I should do next to diagnose the source of
> the
> > problem?
>
> How long does it stay in this state? systemctl times out connections
> after a timeout (25s ?), so even if it fails to communicate with PID1 for
> any reason, rpm should still continue at some point.
>
> pstree -ap <pid-of-rpm> should show a list of processes. If it's systemctl
> that is hanging, can you post the backtrace?
>

It had been stuck for ~3 days and last night I got sick of my computer
being sluggish, so I started trying to see if I could get it to break free.
I should have gotten a stacktrace for systemctl first, but didn't think of
that and here's what happened:

I ran "systemctl start minetest at default.service"
Then after a few seconds, the system went into what I believe was "suspend
mode" (screen went blank and I had to hit the power button to get things to
come back). I then hit Ctrl-C after about 30 seconds because it appeared
that the service wasn't actually starting (it technically was in the
process of being removed after all).

After that, the CPU usage of systemd dropped back to being close to 0 and
the status output the following:
● minetest at default.service
   Loaded: not-found (Reason: No such file or directory)
   Active: inactive (dead)

Mar 10 20:16:19 JohansenDev systemd[1]: Failed to start
minetest at default.service.
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