Jails that won't die...

[Brian Fundakowski Feldman]

On Wed, Jun 29, 2005 at 03:28:09PM +0200, Eirik Øverby wrote:
> 
> On 28. jun. 2005, at 16.58, Brian Fundakowski Feldman wrote:
> 
> >On Tue, Jun 28, 2005 at 10:37:29AM +0200, Eirik Øverby wrote:
> >
> >>Hi,
> >>
> >>I have, since upgrading to 5.x and updating my management tools, seen
> >>a number of problems relating to stopping jails.
> >>
> >>I'm maintaining several hosts with a number of full-featured jails
> >>(i.e. full virtual FreeBSD installations in each jail), and in
> >>general this works fine. However, whenever I stop a jail using 'jexec
> >><id> kill -SIGNAL -1' or 'jexec <id> /bin/sh /etc/rc.shutdown' (in
> >>various combinations), jails have a tendency to stick around for
> >>minutes or hours - according to 'jls'. Often I see an entry in
> >>'netstat -a' indicating that there is one or more sockets in FIN_WAIT
> >>state, preventing the jail from coming down. Taking the virtual
> >>network interface (alias) down does not help. All I can do at this
> >>point is wait.
> >>
> >>I normally use 'jls' to determine whether or not a jail can be
> >>restarted (i.e. it's not running), but this is pretty useless in such
> >>cases. And right now I have a case where 'netstat -a' shows me
> >>nothing pertaining to the jail, though it has no processes running. I
> >>have therefore force-started the jail again, which seems to work
> >>nicely, but now 'jls' gives me two entries for this jail, with
> >>different JIDs.
> >>
> >>What am I doing wrong here?
> >>
> >
> >You could just use ps to check for jailed processes and check their
> >respective jails using the procfs status entry (at least according
> >to the ps manpage...)
> 
> My jailctl script can do both - list by jls and list by processes in  
> the jail. There are NO processes running in the jail.

So it's obviously not running, and you can mark its state as such.

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green at FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\