BUG report, per telinit --help output

[Anthony Booker]

Hello,

I'm trying to resize the mounted root f/s of an ubuntu 7.04 system. 
Things go fine until after pivot root, then I can't unmount the original
root, telinit u is what I expect to use to get init to drop references
to the old root.  However:

root at D3100:/# cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/mapper/D3100.servadmin.com-root /old_root ext3 rw,data=ordered 0 0
/dev/mapper/D3100.servadmin.com-swap_1 / ext3 rw,data=ordered 0 0
proc /proc proc rw 0 0
root at D3100:/# telinit u
root at D3100:/# echo $?
0
root at D3100:/# lsof | grep old
init         1   root  txt       REG              254,0  111040 12795925
/old_root/sbin/init
init         1   root  mem       REG              254,0  119536 36159503
/old_root/lib/ld-2.5.so
init         1   root  mem       REG              254,0 1367432 36159509
/old_root/lib/libc-2.5.so
root at D3100:/# cat /etc/issue
Ubuntu 7.04 \n \l

root at D3100:/# cat /proc/version
Linux version 2.6.20-16-generic (root at king) (gcc version 4.1.2 (Ubuntu
4.1.2-0ubuntu4)) #2 SMP Thu Aug 30 23:16:15 UTC 2007

So no unmount of old_root is possible.

telinit says:

root at D3100:/# telinit --help
Usage: telinit [OPTION]... RUNLEVEL
Change runlevel.

Options:
  -q, --quiet                 reduce output to errors only
  -v, --verbose               increase output to include informational
messages
      --help                  display this help and exit
      --version               output version information and exit

RUNLEVEL should be one of 0123456S.

Report bugs to <upstart-devel at lists.ubuntu.com>

If you need any further information, I'd be happy to help.

Thanks for your time,
Anthony Booker