From: Christian Mayrhuber (christian.mayrhuber_at_gmx.net)
Date: Wed 13 Oct 2004 - 11:16:16 BST
On Wednesday 13 October 2004 06:35, David MacKinnon wrote:
> Gregory (Grisha) Trubetskoy wrote:
>
> >
> > I had something similar happen, but then it turned out the problem was
> > with my config. I figured it out by inserting an occasional echo
> > statement into /usr/local/lib/util-vserver/vserver.functions
> > (disableInterfaces() is the func you'd probably be most interested in)
> > to see what 'ip' commands are issued, e.g.:
>
> Thanks for the tip... I get
> /sbin/ip addr del 172.16.4.170/32 broadcast + label eth0:ast dev eth0
>
> Which looks right, and works fine from commandline.
>
> Looking further, after bringing down the vserver
>
> ip addr show
>
> Still shows all the apropriate ip's configured, however the interfaces
> aren't up (they don't show up if I do ifconfig). So it's not deleting
> all the addresses, just bringing down the interfaces.
>
I've got the same problem, with 2.6.8.1-vs1.92 and 2.6.9-rc3-bk3-vs1.93-rc2.
It brings down all interfaces except lo.
I've tried it with util-vserver 0.30.193 and util-vserver 0.30.195.
I've added debug output to _processSingleInterface,
_addInterfaceCmd and disableInterface.
If I issue
#ip addr del 192.168.1.2/24 broadcast + label dummy0:distcc dev dummy0
the interfaces are still up afterwards, but this code in
disableInterface is not reached at all. I don't get any debug
output from disableInterface, but all interfaces are down after
the command "reboot -d -f -i" in the vserver, before ip addr del.
If I remove the S90reboot command in rc6.d the interfaces stay up, so
I guess there is a kernel bug, because a vserver should not be able to
shutdown the hosts network interfaces.
##############################################################
Just for completeness
##############################################################
My config is the following:
/etc/vservers# find distcc -xtype f -print -exec cat \{\} \;
distcc/apps/pkgmgmt/internal
distcc/interfaces/0/ip
192.168.1.2
distcc/interfaces/0/prefix
24
distcc/interfaces/0/name
distcc
distcc/interfaces/0/dev
dummy0
distcc/uts/nodename
distcc
distcc/name
distcc
distcc/run
3
distcc/fstab
none /proc proc defaults 0 0
none /tmp tmpfs size=16m,mode=1777 0 0
none /dev/pts devpts gid=5,mode=620 0 0
distcc/context
3
vserver distcc stop ; shutdown -r +2
_processSingleInterface(/etc/vservers/distcc/interfaces/0)
_addInterfaceCmd(IP_ADDR 192.168.1.2/24 broadcast + label dummy0:distcc dev
dummy0)
_addInterfaceCmd(IP_LINK dummy0 up)
Sending all processes the TERM signal...done.
Sending all processes the KILL signal...done.
Saving random seed...done.
Unmounting remote and non-toplevel virtual filesystems...done.
Deconfiguring network interfaces...done.
Deactivating swap...done.
Unmounting local filesystems...umount: /dev/hdv1: not found
umount: /: not mounted
done.
mount: / not mounted already, or bad option
Rebooting..
<-- All network links down -->
-- lg, Chris _______________________________________________ Vserver mailing list Vserver_at_list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver