Umount script: Kill blocking processes and destroy VMs.

roles/lmn_vm/files/pam-umount.sh

@@ -9,50 +9,30 @@ uid="$2"
 mtp="$3"
 
 shutdownVMs(){
-    local VMs VM
-    VMs="$(machinectl list --no-legend)"
-    if [[ -n "$VMs" ]] ; then
-	for VM in $VMs ; do
-	    machinectl poweroff "$VM{VM%% *}" || true
-	done
-	sleep 3
-    fi
-    ## Check again:
-    VMs="$(machinectl list --no-legend)"
-    if [[ -n "$VMs" ]] ; then
-	sleep 3
-	for VM in $VMs ; do
-	    machinectl terminate "${VM%% *}" || true
-	done
-    fi
-    #killall -9 virtiofsd
-}
-
-unbindmnt(){
-    local lmuh="/lmn/media/$usr/home"
-    local lmus="/lmn/media/$usr/share"
-    local N=0 mh=true ms=true
-
-    mountpoint -q $lmuh || mh=false
-    mountpoint -q $lmus || ms=false
-    while [[ $N -lt 10 ]] && ([[ $mh = true ]] || [[ $ms = true ]]) ; do
-	if [[ $mh = true ]] ; then
-	    umount "$lmuh" && mh=false
-	fi
-	if [[ $ms = true ]] ; then
-	    umount "$lmus" && ms=false
-	fi
-	N=$((N + 1))
-	sleep 1
+    local VM
+    for VM in $(sudo -u $usr XDG_RUNTIME_DIR="/run/user/$uid" \
+		     XDG_CONFIG_HOME="/tmp/$uid/.config/" \
+		     XDG_CACHE_HOME="/var/cache/user/$uid/" \
+		     virsh list --state-running | \
+		    sed -nE "s/.*\s+(\S+)\s+running/\1/p") ; do
+	sudo -u $usr XDG_RUNTIME_DIR="/run/user/$uid" \
+	     XDG_CONFIG_HOME="/tmp/$uid/.config/" \
+	     XDG_CACHE_HOME="/var/cache/user/$uid/" \
+	     virsh destroy "$VM" 2>&1 | systemd-cat || true
     done
-    systemd-cat echo "Tried $N umount(s)."
 }
 
 ######################
 
-if [[ "$mtp" =~ "/srv/samba/schools" ]] ; then
+## This is the first mount we need to get rid of:
+if [[ "$mtp" =~ "/lmn/media/$usr/share" ]] ; then
     shutdownVMs
-    unbindmnt
+    sleep 5 # leave some time to write caches …
+    sudo -u ${usr} killall gvfsd | systemd-cat
+    sudo -u ${usr} killall dbus-daemon | systemd-cat
+    systemctl kill system-virtiofs.slice
+    # debug to find processes blocking umount:
+    # lsof > /tmp/lsof.log
 fi
 
 ## Just umount: