--- /dev/null
+# validate the prodigal member disk scenario i.e. a former container
+# member is returned after having been rebuilt on another system
+num_disks=4
+size=$((10*1024))
+mdadm -CR $container -e imsm -n $num_disks $dev0 $dev1 $dev2 $dev3
+mdadm -CR $member $dev0 $dev2 -n 2 -l 1 -z $size
+mdadm --wait $member
+mdadm -Ss
+
+# make dev0 and dev1 a new rebuild family
+mdadm -A $container $dev0 $dev1
+mdadm -I $container
+mdadm --wait ${member}_0
+mdadm -Ss
+
+# make dev2 and dev3 a new rebuild family
+mdadm -A $container $dev2 $dev3
+mdadm -I $container
+mdadm --wait ${member}_0
+mdadm -Ss
+
+# reassemble and make sure one of the families falls out
+mdadm -A $container $dev0 $dev1 $dev2 $dev3
+mdadm -I $container
+testdev ${member}_0 1 $size 1
+if mdadm --remove $container $dev0 ; then
+ # the dev[23] family won
+ imsm_check_removal $container $dev1
+ imsm_check_hold $container $dev2
+ imsm_check_hold $container $dev3
+else
+ # the dev[01] family won
+ imsm_check_hold $container $dev1
+ imsm_check_removal $container $dev2
+ imsm_check_removal $container $dev3
+fi
+mdadm -Ss
+
+# reassemble with a new id for the dev[23] family
+mdadm -A $container $dev0 $dev1
+mdadm -I $container
+mdadm -A ${container}2 $dev2 $dev3 --update=uuid
+mdadm -I ${container}2
+
+testdev ${member}_0 1 $size 1
+testdev ${member}_1 1 $size 1
--- /dev/null
+imsm_check_hold() {
+ if mdadm --remove $1 $2; then
+ echo "$2 removal from $1 should have been blocked" >&2
+ cat /proc/mdstat >&2
+ mdadm -E $2
+ exit 1
+ fi
+}
+
+imsm_check_removal() {
+ if ! mdadm --remove $1 $2 ; then
+ echo "$2 removal from $1 should have succeeded" >&2
+ cat /proc/mdstat >&2
+ mdadm -E $2
+ exit 1
+ fi
+}
+
+setup_env() {
+ export IMSM_DEVNAME_AS_SERIAL=1
+ export IMSM_TEST_OROM=1
+ container=/dev/md/container
+ member=/dev/md/vol0
+}
+
+reset_env() {
+ unset IMSM_DEVNAME_AS_SERIAL
+ unset IMSM_TEST_OROM
+ unset imsm_check
+ unset container
+ unset member
+}