--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/kvmtool.sh Sat Aug 08 01:20:27 2009 +0200
@@ -0,0 +1,201 @@
+#! /bin/bash
+# $Id$
+# $URL$
+# status: in development
+# 2008 Heiko Schlittermann
+
+# Should be written in Perl!
+
+# Structure of virtual machine directories
+# $BASE (see below, hard coded into this script)
+# |
+# +--<vm1>
+# | +--conf
+# | | +--options
+# | | +--id
+# | +--var
+# | | +--pid
+# | | +--running_options
+# | +--<image1>
+# | +-- ....
+# | +--<imageN>
+# |
+# +--<vm2>
+# | ....
+# +--<vmN>
+
+
+action="${1?}"; shift # mandatory
+vm="$1" ; shift # optional
+
+# no user service able parts below
+
+PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+unset ${!LC_*} LANG CDPATH
+
+ME=$(basename $0)
+BASE=/kvm
+KVM=$(command -v kvm)
+NC=$(command -v nc)
+FUSER=$(command -v fuser)
+VNCVIEWER=$(command -v vncviewer)
+TIMEOUT=30
+
+
+for f in "/etc/$ME.conf" ~/.$ME; do test -r "$f" && source "$f"; done
+
+
+die() { echo $ME: "$@" >&2; exit 1; }
+warn() { echo $ME: "$@" >&2; }
+silently() { "$@" &>/dev/null; }
+
+debug() { echo "DEBUG: $@" >&2; }
+
+unique_ids() {
+ local dups=$(cat $BASE/*/conf/id 2>/dev/null | sort -n | uniq -c \
+ | egrep -v '^[[:space:]]+1 ' | tr -s ' ' | cut -f2 -d:)
+ test "$dups" || return 0
+ ERR="$dups" && return 1
+}
+
+convert_dirs() {
+ for dir in $BASE/*; do
+ test -d $dir/kvm || test -d $dir/conf || continue
+ local old=$dir/kvm
+ local new=$dir/conf
+ test -d $old && mv $old $new
+ test -f $new/cmdline && mv $new/cmdline $new/options
+ done
+}
+
+monitor() {
+ local port=$1; shift
+ local command="$1"; shift
+
+ # check, if the monitor is available, kill if somebody
+ # else is using it
+ local client=$(netstat -tn | egrep ":$port[[:space:]]+EST" | tr -s ' ' | cut -f4 -d' ')
+ test "${client%:*}" = 127.0.0.1 && fuser -k ${client#*:}/tcp
+
+ local pid0 pid1
+ (
+ local a=$tmp/a.fifo; mkfifo $a
+ trap "rm -v $a" EXIT
+ exec 10<>$a
+ $NC localhost $port <&10 | {
+ read || exit # banner
+ while read -d' '; do test "$REPLY" = "(qemu)" && break; done
+ echo "$command" >&10
+ while read -d' '; do test "$REPLY" = "(qemu)" && break; done
+ }
+ ) & pid0=$!
+ ( sleep $TIMEOUT; kill $pid0 ) & pid1=$!
+ wait $pid0
+ silently kill $pid0 $pid1
+}
+
+### MAIN
+
+# sanity
+test -x "$NC" || die "need nc (netcat)"
+test -x "$KVM" || die "need kvm/qemu/kqemu"
+test -x "$FUSER" || die "need fuser"
+test -d "$BASE" || die "base dir $BASE does not exist"
+test -d "$BASE/$vm" || die "vm $vm does not exist"
+
+unique_ids || die "duplicate ids (id: $ERR)"
+convert_dirs
+
+trap 'test "$TMP" && rm -fr $TMP' EXIT
+
+for vm in ${vm:-$(echo $BASE/*)}; do
+ vm=$(basename $vm)
+ conf=$BASE/$vm/conf
+ var=$BASE/$vm/var
+
+ tmp=$(mktemp -d)
+ TMP="$TMP $tmp"
+
+ test -d $conf || continue
+ test -f $conf/id || { warn "need id file (vm: $vm)" && continue; }
+ test -f $conf/options || { warn "need options file (vm: $vm)" && continue; }
+ test -d $var || mkdir $var || exit 2
+
+ id=$(cat $conf/id)
+ port=$((4000 + id))
+ pid=$(cat $var/pid 2>/dev/null)
+
+ case "$action" in
+
+ start)
+ echo "starting $vm"
+ options="$(grep -v '^#' $conf/options) \
+ -pidfile var/pid \
+ -name "$vm" \
+ -vnc :$id \
+ -monitor tcp:localhost:$port,server,nowait \
+ $@"
+ options=$(echo "" $options) # shorten it
+ echo "$options" > $var/running_options
+ test -f $var/frozen && options="$options $(cat $var/frozen)"
+
+ if silently fuser $var/pid; then
+ echo "running, pid: $pid, display :$id, monitor tcp:127.0.0.1:$port"
+ else
+ ( cd $BASE/$vm && $KVM $options -daemonize )
+ pid=$(cat $var/pid 2>/dev/null)
+ test "$pid" || { warn "serious problem ($vm), no pid" && continue; }
+ echo "started, pid: $pid, display :$id, monitor tcp:127.0.0.1:$port"
+ fi
+
+ test "$DISPLAY" && test "$VNCVIEWER" && test -t \
+ && ( silently exec $VNCVIEWER :$id </dev/null & )
+
+ ;;
+ stop)
+ {
+ echo "stopping (powerdown) $vm"
+ monitor $port "system_powerdown"
+ silently fuser $var/pid && $0 quit $vm
+ } &
+ ;;
+ quit)
+ {
+ echo "quit $vm"
+ monitor $port "quit"
+ silently fuser $var/pid && $0 kill $vm
+ } &
+ ;;
+ kill)
+ echo "killing $vm"
+ kill $pid
+ ;;
+ freeze)
+ {
+ echo "freezing $vm"
+ monitor $port "savevm HIBERNATED"
+ monitor $port "quit"
+ echo "-loadvm HIBERNATED" >$var/frozen
+ } &
+ ;;
+ qemu)
+ echo "DO *NOT* USE \"quit\", use ^C for exiting!"
+ $NC localhost $port
+ ;;
+
+ list)
+ echo "$vm:" $(silently fuser $var/pid \
+ && echo "running (pid: $pid)" \
+ || echo "not running")
+ ;;
+
+ *) die "unknown command \"$action\""
+ ;;
+
+ esac
+
+done
+
+wait
+
+# vim:ts=4 sw=4 et: