Am Montag, den 20.10.2014, 11:56 +0200 schrieb Richard Weinberger:
> Am 20.10.2014 um 11:51 schrieb Thomas Meyer:
> >> Hmm, does this always happen?
> > 
> > Yes, my single core system seems to trigger this every time after resume 
> > from ram.
> 
> What is your host kernel?

The standard Fedora kernel: 3.16.4-200.fc20.x86_64

> 
> >> At least on my notebook it did not happen. I've started an UML yesterday 
> >> suspended it and after more than 12h it worked fine today. 
> >>
> >> BTW: Do you see the issue also then freezing UML using the freezer cgroup?
> > 
> > I'm not sure what do you mean by this. Do I need to enable some special 
> > configs for this in the host or uml kernel?
> 
> Create on the host side a new freezer cgroup, put UML into it and freeze/thaw 
> it.
> i.e. mkdir /sys/fs/cgroup/freezer/uml ; echo <pid of a shell> >  
> /sys/fs/cgroup/freezer/uml/tasks.
> In the said shell run UML and then freeze it using echo FROZEN > 
> /sys/fs/cgroup/freezer/uml/freezer.state.
> Later thaw it: echo THAWED > /sys/fs/cgroup/freezer/uml/freezer.state
> 

I'll try this.
Thanks for this tip.

with kind regards
thomas



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