(Repost - First Message Never Showed Up )
The symptom was umount2 couldn't unmount /usr. We added a diagnostic mod to
/etc/rc.d/init.d/halt. Adding a call to /sbin/fuser to find the offending pid(s) and
then
to /sbin/lsof to see exactly what files were preventing the umount we got:
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
... bunch of irrelevant stuff snipped ....
S01halt 1065 root 3r REG 3,3 30306528 214860
/usr/lib/locale/locale-archive S01halt 1065 root 255r REG 3,7
5575 96095 /etc/rc.d/init.d/halt
The file /etc/rc.d/init.d/halt incorporates /etc/rc.d/init.d/functions. The /usr
locale file
turned out to be called up by /etc/rc.d/init.d/functions in the line which goes
something like this:
if [ -f /etc/sysconfig/i18n ] ..... <do locale stuff>
Somehow I had installed i18n (the international set). In the spirit of adventure, I
renamed /etc/sysconfig/i18n to /etc/sysconfig/i18n.notnow.
Several hot and cold reboots (with my rescue disk handy) indicated that the original
symptom was fixed with no degradation of other programs after renaming the i18n
file.
This is certainly not the only way you can end up with umount2 errors in RH or any
other distribution. The error mesage you get is rather ..er.. terse (although it is
definitely better than "Unknown Vxd Error: Windows Will Close Now").
If your filesystems are ext3, you may not suffer much of an annoyance. However,
ext2 will run a <lengthy> fsck on the errant mount on the next boot, and it is
unlikely
that you won't notice it.
Here is one possible diagnostic mod to /etc/rc.d/init.d/halt (this one assumes there
is only one errant mount . Make a copy of /etc/rc.d/init.d/halt before making this
mod . Similar code works for me, your mileage may vary.) :
..............<snip>
fi
sleep 8
remaining=`halt_get_remaining |sort -r`
+ garbage=`/sbin/fuser -m $remaining |awk -F: ' {print $2}'`
+ echo $garbage
+ for entries in $garbage; do
+ entry=`echo $entries |sed s/[a-z]//`
+ echo "PID: " $entry
+ /sbin/lsof -p $entry |grep $remaining
+ ps ax |grep $entry | grep -v grep;
+ done
/sbin/fuser -k -m $remaining > /dev/null
sleep 5
............<snip> .
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