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#!/bin/sh
# We are trying to be nice.
# TERM everybody. Give them some time to die.
# KILL might make some filesystems non-unmountable,
# so we'll do it in stop_storage instead.
killcnt=30
PATH=/sbin:/usr/sbin:/bin:/usr/bin
echo "<*> `date '+%Y-%m-%d %H:%M:%S'` Executing '$0 $*'"
showps() {
# sleep 1 ensures that xargs will have time to start up.
# This makes pslist less prone to random jitter.
pslist=`{ sleep 1; ps -A -o comm=; } | sort | xargs`
pscnt=$(( `echo "$pslist" | wc -w` + 0 ))
if test x"$VERBOSE" = x; then
echo "* `date '+%H:%M:%S'` $pscnt processes"
else
echo "* `date '+%H:%M:%S'` Processes ($pscnt): $pslist"
fi
}
# Sync.
# Rationale: sometimes buggy root processes can
# hang the system when killed (X for example may have problems
# with restoring text mode on a poorly supported hardware).
# These are bugs and must be fixed, but until then users will lose
# dirty data on shutdown! Let's make that less likely.
sync &
# Send SIGTERMs. If list of processes changes, proceed slower.
# If it has stabilised (all who wanted to, exited), proceed faster.
showps
i="$killcnt"
while test "$i" -gt 0; do
echo "* `date '+%H:%M:%S'` Sending CONT, TERM" #, HUP"
# I've seen "killall5 2.86" which doesn't grok signal names!
killall5 -18
killall5 -15
#killall5 -1 # HUP: because interactive bash does not die on TERM...
# but init will reread /etc/inittab on HUP and my /etc is on non root fs!
# -> umounts will complain.
oldpslist="$pslist"
showps
if test x"$pslist" = x"$oldpslist"; then
i=$((i-8))
fi
i=$((i-2))
done
echo "* `date '+%H:%M:%S'` Turning off swap"
swapoff -a
cat /proc/swaps | grep -v ^Filename | cut -d ' ' -f1 \
| while read -r line; do
test "$line" && {
echo swapoff "$line"
swapoff "$line"
}
done
echo "* /proc/swaps:"
cat /proc/swaps
echo "* /proc/mounts:"
cat /proc/mounts
echo "* ps -A e:"
ps -A e
echo "* top -bn1:"
top -bn1
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