[lxc-devel] [Not A Patch] [POC] Proof of concept code for using devtmpfs for autodev and more...

[Michael H. Warfield]

On Fri, 2013-11-01 at 17:18 -0500, Serge Hallyn wrote: 
> Quoting Michael H. Warfield (mhw at WittsEnd.com):
> > On Thu, 2013-10-31 at 13:00 -0500, Serge Hallyn wrote: 
> > > Quoting Michael H. Warfield (mhw at WittsEnd.com):
> > > > I did incorporate your suggestion of using the hash of the rootfs path
> > > > as the subdirectory under the hosts /dev/ for the container.  I also
> > > 
> > > (Printed this out to look it over, just putting all my comments together
> > > here) :
> > > 
> > > 1. I think if /dev is not devtmpfs, we should just bail on this.
> > > 
> > > 2. You say in comments that you're using the cgroup name, but it seems
> > >    you're actually just using the container name?
> > > 
> > > 3. The cgroup name used to be unique, but now each mounted cgroupfs
> > >    can actually have a different name for the same container (if some
> > >    of them didn't get cleaned out well).
> > 
> > Maybe I misunderstood something here but I thought you told me at

> You did (or I wasn't clear :).  The container names need to be unique within
> a given lxcpath.  So you can
> 
> 	lxc-create -t fedora -n Fedora19
> 	lxc-create -t fedora -n Fedora19 -P /opt/lxc1
> 	for i in `seq 2 201; do
> 		lxc-create -t fedora -n Fedora19 -P /opt/lxc$i
> 	done

> and start them all by passing -P <lxcpath> to lxc-start.

Yeah, that worked.  Creates some, errr, cough, interesting
ambiguities...

[root at hydra ~]# lxc-ls 
Alcove   Audience  CentOS6  Faces     Oracle Suse Y2
Alpine   BusyBox   Chaos    Fedora19  Platform  Ubuntu  Yelm
Anteroom  CentOS5   Debian   Fourier   Plover Vault
[root at hydra ~]# lxc-ls --active
Alcove   Audience  Faces     Fedora19-1  Oracle    Plover  Vault  Yelm
Anteroom  Chaos     Fedora19  Fourier   Platform  Suse    Y2
[root at hydra ~]# 

So, Fedora19-1 shows up in "lxc-ls --active" but not in plain "lxc-ls".
So it's an active container but not a container???  Interesting...

> -serge


-- 
Michael H. Warfield (AI4NB) | (770) 985-6132 |  mhw at WittsEnd.com
   /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
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