Re: 1.1 system doesn't unmount a drive during reboot
On Tue, 7 May 1996, Nathan O. Siemers wrote:
>
> 1.1 (1.3.68 kernel) is solid as a rock, so I haven't had to
> reboot often, but...
>
> One of my two mounted hard drives doesn't unmount during the
> shutdown process, giving a device is busy message. umount doesn't
> seem to work either, but I've only tried that a few times.
> My fstab doesn't seem to look too wacky (/dev/hdb1 is not getting
> unmounted):
You might want to get acquainted with the fuser command.
"fuser -m /dev/hdb1" will list the process id of all the processes that are
currently accessing a file on /dev/hdb1.
Try inserting the following command in /etc/init.d/halt (which is the file
that gets run when you request a halt through shutdown) just before the
line that says 'echo -n "Unmounting file systems... "':
(fuser -m /dev/hdb1; ps -fx) | more
This should print something looking somewhat like this:
/dev/hdb1: 1m 8m 22m 87m 89m 95m 97m
100m 104m 107m 112m 118m 121m 124m 125m 132m 141 141r
141e 147
PID TTY STAT TIME COMMAND
1 ? S 0:00 init
2 ? SW 0:00 (kflushd)
3 ? SW< 0:00 (kswapd)
22 ? S 0:00 /sbin/kerneld
87 ? S 0:00 /sbin/syslogd
89 ? S 0:00 /sbin/klogd
97 ? S 0:00 (inetd)
100 ? S 0:00 (named)
etc.
Just jot down the name of the processes whose process ids correspond to ids
in the list given by fuser. Then you'll know who's keeping your drive busy
during shutdown. If you don't know what to do then, just post the info to
debian-users... Someone should know why the offending process doesn't get
killed on shutdown.
Christian
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