stress2: A unmount of a unionfs file system may return EBUSY.

tools/test/stress2/misc/unionfs13.sh

@@ -64,7 +64,10 @@ done
 [ $s ] && echo "Failed in loop #$i"
 df -i $mp2 | tail -1
 
-umount $mp2	# The unionfs mount
+while mount | grep -Eq "on $mp2 .*unionfs"; do
+	umount $mp2 && break
+	sleep 5
+done
 umount $mp2
 umount $mp1
 mdconfig -d -u $md2

tools/test/stress2/misc/unionfs4.sh

@@ -67,7 +67,10 @@ export runRUNTIME=2m
 (cd ..; ./run.sh marcus.cfg)
 
 ../tools/killall.sh
-umount $mp2	# The unionfs mount
+while mount | grep -Eq "on $mp2 .*unionfs"; do
+	umount $mp2 && break
+	sleep 5
+done
 umount $mp2
 n=`find $mp1/stressX | wc -l`
 [ $n -eq 1 ] && s=0 || { find $mp1/stressX -ls | head -12; s=1; }

tools/test/stress2/misc/unionfs5.sh

@@ -72,8 +72,11 @@ export runRUNTIME=2m
 
 (cd ../testcases/mkdir; ./mkdir -t 2m -i 20)
 
-find $RUNDIR -ls
-umount $mp2	# The unionfs mount
+find $RUNDIR -ls | head -5
+while mount | grep -Eq "on $mp2 .*unionfs"; do
+	umount $mp2 && break
+	sleep 5
+done
 umount $mp2
 n=`find $mp1/stressX | wc -l`
 [ $n -eq 1 ] && s=0 || s=1

tools/test/stress2/misc/unionfs6.sh

@@ -87,7 +87,10 @@ chmod 777 $mp2
 su $testuser -c \
 	'(cd ..; ./testcases/run/run $TESTPROGS)'
 
-umount $mp2	# The unionfs mount
+while mount | grep -Eq "on $mp2 .*unionfs"; do
+	umount $mp2 && break
+	sleep 5
+done
 umount $mp2
 n=`find $mp1/stressX | wc -l`
 [ $n -eq 1 ] && s=0 || { find $mp1/stressX -ls | head -12; s=1; }