Use lazy unmount for disorderfs on jenkins.debian.net

Vagrant Cascadian vagrant at debian.org
Tue Nov 15 19:32:15 UTC 2016 

Using lazy unmount *might* allow the disorderfs filesystems to unmount
if a file descriptor is held open but later releases... worst case is it
shouldn't make anything worse.

available in "lazy-unmount" branch at:

  https://anonscm.debian.org/git/users/vagrant/jenkins.debian.net.git


live well,
  vagrant


commit 351a85c7713ef9fece0df76959bbe7fe0bb3fde3
Author: Vagrant Cascadian <vagrant at debian.org>
Date:   Tue Nov 15 11:11:46 2016 -0800

    Do a lazy unmount of disorderfs.
---
 hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup             | 2 +-
 hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup             | 2 +-
 hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup              | 2 +-
 hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup              | 2 +-
 hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup              | 2 +-
 hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup              | 2 +-
 hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup            | 2 +-
 hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup            | 2 +-
 hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup            | 2 +-
 hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup            | 2 +-
 hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup         | 2 +-
 hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup         | 2 +-
 hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup              | 2 +-
 hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup              | 2 +-
 hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup              | 2 +-
 hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup              | 2 +-
 hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup              | 2 +-
 hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup              | 2 +-
 hosts/hb0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup               | 2 +-
 hosts/hb0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup               | 2 +-
 hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/B01_cleanup            | 2 +-
 hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/C01_cleanup            | 2 +-
 hosts/jenkins/etc/pbuilder/rebuild-hooks/B01_cleanup                    | 2 +-
 hosts/jenkins/etc/pbuilder/rebuild-hooks/C01_cleanup                    | 2 +-
 hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup             | 2 +-
 hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup             | 2 +-
 hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup             | 2 +-
 hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup             | 2 +-
 hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup             | 2 +-
 hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup             | 2 +-
 hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup            | 2 +-
 hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup            | 2 +-
 hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup            | 2 +-
 hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup            | 2 +-
 hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup             | 2 +-
 hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup             | 2 +-
 hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup             | 2 +-
 hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup             | 2 +-
 hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup             | 2 +-
 hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup             | 2 +-
 hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup  | 2 +-
 hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup  | 2 +-
 hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup | 2 +-
 hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup | 2 +-
 hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup | 2 +-
 hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup | 2 +-
 hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup | 2 +-
 hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup | 2 +-
 hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/B01_cleanup   | 2 +-
 hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/C01_cleanup   | 2 +-
 hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup  | 2 +-
 hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup  | 2 +-
 hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/B01_cleanup   | 2 +-
 hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/C01_cleanup   | 2 +-
 hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup             | 2 +-
 hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup             | 2 +-
 hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup             | 2 +-
 hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup             | 2 +-
 hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup              | 2 +-
 hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup              | 2 +-
 hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup              | 2 +-
 hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup              | 2 +-
 62 files changed, 62 insertions(+), 62 deletions(-)

diff --git a/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/hb0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/hb0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/hb0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/hb0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/hb0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/hb0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/hb0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/hb0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/jenkins/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/jenkins/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/jenkins/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/jenkins/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/jenkins/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/jenkins/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/jenkins/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/jenkins/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup b/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
index bbea69f..334e03a 100755
--- a/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
+++ b/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/B01_cleanup
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
diff --git a/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup b/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
index 73f4083..47719ae 100755
--- a/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
+++ b/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/C01_cleanup
@@ -14,7 +14,7 @@ echo
 # cease using disorderfs
 if [ -d /tmp/disorderfs ] ; then
 	echo -n "Unmounting /tmp/disorderfs…"
-	fusermount -u "$BUILDDIR"
+	fusermount -z -u "$BUILDDIR"
 	rmdir "$BUILDDIR"
 	mv /tmp/disorderfs "$BUILDDIR"
 	echo " done."
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