[Lxc-users] [lxc-devel] [GIT] lxc branch, master, updated. 7f99e339363d9f005c9386f60a1d8c0953c85053

Fri Nov 2 00:15:50 UTC 2012

On Thu, 2012-11-01 at 19:17 -0400, Michael H. Warfield wrote:
> On Thu, 2012-11-01 at 23:28 +0100, Serge Hallyn wrote:
> > Quoting Michael H. Warfield (mhw at WittsEnd.com):
> > > On Thu, 2012-11-01 at 22:44 +0100, Serge Hallyn wrote:
> > > > Quoting Michael H. Warfield (mhw at WittsEnd.com):
> > > > > On Thu, 2012-11-01 at 21:20 +0100, Daniel Baumann wrote:
> > > > > > On 11/01/2012 09:08 PM, Michael H. Warfield wrote:
> > > > > > > I know, I KNOW this is an 11th hour request.  Can we please get Serge's
> > > > > > > autodev stuff into this release?  Please?
> > > > > 
> > > > > > release early, release often?
> > > > > 
> > > > > > just release current git as 0.8.0 now, and the one with the autofoo as 
> > > > > > 0.8.1 soon after that?
> > > > > 
> > > > > That would be ideal but we've been sitting at 0.8.0rc2 for something
> > > > > like 3-1/2 months now.  I know Daniel (the other Daniel, the Daniel) has
> > > > > been incredibly busy.  I have no objection to getting this out the door
> > > > > as 0.8.0 with a fast bump to 0.8.1 for the systemd stuff, but another
> > > > > several months is not good.  Can we get this fast bump?  We'll be
> > > > > staring Fedora 18 in the face by then.  The working versions of Fedora
> > > > > are no longer in support and we've got more distros adopting systemd.
> > > 
> > > > I think this will end up slated for 0.9.0 (which we're hoping will be
> > > > soon), but in any case I went ahead and created a branch at
> > > > git://github.com/hallyn/lxc called upstream.nov1.2012.autodev, with
> > > > an autodev patch on top of Daniel's latest push.
> > > 
> > > > I quickly tried my hand at fixing the error you had with /dev/ttyN.  I
> > > > haven't tested that bit.  I will not be able to be online at all from
> > > > now until weekend or monday, so if it needs more tweaks please feel
> > > > free to 'just fix it'.
> > > 
> > > Problem.  Works for the systemd containers but not for my older
> > > containers.  I get this...
> > > 
> > > [root at forest Plover]# cat 2012-10-30-18:17:46.log
> > >       lxc-start 1351635466.998 ERROR    lxc_conf - Operation not permitted - error 1 creating /usr/lib64/lxc/rootfs/dev/tty6
> > > 
> > >       lxc-start 1351635466.999 ERROR    lxc_conf - failed to setup the ttys for 'Plover'
> > >       lxc-start 1351635466.999 ERROR    lxc_start - failed to setup the container
> > >       lxc-start 1351635466.999 ERROR    lxc_sync - invalid sequence number 1. expected 2
> > >       lxc-start 1351635466.999 ERROR    lxc_start - failed to spawn 'Plover'
> > > 
> > > Alcove (the systemd container) was the first one started so it may be an
> > > ordinal thing or it may be a systemd thing.  But it's a problem.
> > \
> > Hm, perhaps the container doesn't have mknod?

> They all should have, but I will investigate.  Those devices would have
> existed in the static file system with /dev.  Could it be a problem with
> the device already existing in the /dev directory?

Ok...  Now this is just bloody weird.  I do not understand this.

Yes the containers come up.  But...

Here's what shows up in the detached container's log...

[root at forest Audience]# cat 2012-10-30-18:52:41.log
      lxc-start 1351637562.011 ERROR    lxc_conf - Operation not permitted - error creating /usr/lib64/lxc/rootfs/dev/tty6

Now wait a minute...  What about 1, 2, 3, 4, and 5???  They succeeded
but 6 failed?  How does that make any sense.  In the container...

crw-rw-rw- 1 root root   5,   0 Apr 13  2006 tty
crw--w---- 1 root tty  136,  16 Oct 30  2012 tty1
crw--w---- 1 root tty  136,  17 Oct 30  2012 tty2
crw--w---- 1 root tty  136,  18 Oct 30  2012 tty3
crw--w---- 1 root tty  136,  19 Oct 30  2012 tty4
crw--w---- 1 root tty  136,  20 Oct 30  2012 tty5
crw--w---- 1 root tty  136,  21 Oct 30  2012 tty6

Ok...  That's probably from a couple of days ago.  But no error messages
for the others and they are not "freshly made" either...  That was a
CentOS 5 container.

Trying it with another Fedora container but removed the tty? entries.
No errors.  Hmmm...  Wait...  Another problem...  Container "Plover"...

[mhw at plover ~]$ who
mhw      pts/9        2012-10-30 19:47 (forest.ip6.wittsend.com)
[mhw at plover ~]$ sudo -s
sudo: sorry, you must have a tty to run sudo

What?

Sigh...

No problem in Alcove (F17):

[mhw at canyon mhw]$ ssh alcove.ip6.wittsend.com
Last login: Wed Oct 31 01:51:39 2012 from canyon.ip6.wittsend.com
[mhw at alcove ~]$ sudo -s
[root at alcove mhw]# 

Back to Audience (CentOS 5) and removed /dev/tty?:

No errors as seen before.

Successfully created tty1-6.

Sudo works.

WTH?

There's something wrong here.  Audience and Plover do not have autodev
enabled.  Why has this changed?  Shouldn't that be under the autodev
switch as well?

> > I've updated the git tree to not fail when mknod is denied.  It should
> > just spit out an error, and presumably another one when it next tries
> > to bind mount the pty onto it, but that's ok.

> > Does git://github.com/hallyn/lxc#upstream.nov1.2012.autodev work better
> > now?  (I'm logging off now, so if not I probably won't know for some time)
> 
> Working now.  All containers are up.
> 
> When you get back to it, dude!  Many thanks!
> 
> > -serge
> 
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> 
> Regards,
> Mike

-- 
Michael H. Warfield (AI4NB) | (770) 985-6132 |  mhw at WittsEnd.com
   /\/\|=mhw=|\/\/          | (678) 463-0932 |  http://www.wittsend.com/mhw/
   NIC whois: MHW9          | An optimist believes we live in the best of all
 PGP Key: 0x674627FF        | possible worlds.  A pessimist is sure of it!
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