Re: Strange umount problem in latest 2.4.0 kernels

[David Ford <david@linux.com>]

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"Udo A. Steinberg" wrote:

> "Udo A. Steinberg" wrote:
> >
> > The very strange stuff is umount at reboot:
> >
> > umount: none busy - remounted read-only
> > umount: /: device is busy
> > Remounting root-filesystem read-only
> > mount: / is busy
> > Rebooting.

Are you using devfs and do kernel threads have /dev/initctl open?

# lsof /dev
COMMAND     PID USER   FD   TYPE DEVICE SIZE NODE NAME
init          1 root   10u  FIFO    0,5       574 /dev/initctl
keventd       2 root   10u  FIFO    0,5       574 /dev/initctl
kapm-idle     3 root   10u  FIFO    0,5       574 /dev/initctl
kswapd        4 root   10u  FIFO    0,5       574 /dev/initctl
kreclaimd     5 root   10u  FIFO    0,5       574 /dev/initctl
bdflush       6 root   10u  FIFO    0,5       574 /dev/initctl
kupdate       7 root   10u  FIFO    0,5       574 /dev/initctl
i2oevtd       8 root   10u  FIFO    0,5       574 /dev/initctl
i2oblock      9 root   10u  FIFO    0,5       574 /dev/initctl
khubd        12 root   10u  FIFO    0,5       574 /dev/initctl
khttpd       16 root   10u  FIFO    0,5       574 /dev/initctl

-d


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