+check_uuid_on_ost() {
+ local nid=$1
+ do_facet ost1 "$LCTL get_param obdfilter.${FSNAME}*.exports.'$nid'.uuid"
+}
+
+check_uuid_on_mdt() {
+ local nid=$1
+ do_facet $SINGLEMDS "$LCTL get_param mdt.${FSNAME}*.exports.'$nid'.uuid"
+}
+
+test_91() {
+ local uuid
+ local nid
+ local found
+
+ load_modules
+
+ [[ $(lustre_version_code ost1) -ge $(version_code 2.7.63) ]] ||
+ { skip "Need OST version at least 2.7.63" && return 0; }
+ [[ $(lustre_version_code $SINGLEMDS) -ge $(version_code 2.7.63) ]] ||
+ { skip "Need MDT version at least 2.7.63" && return 0; }
+
+ start_mds || error "MDS start failed"
+ start_ost || error "unable to start OST"
+ mount_client $MOUNT || error "client start failed"
+ check_mount || error "check_mount failed"
+
+ if remote_mds; then
+ nid=$($LCTL list_nids | head -1 | sed "s/\./\\\./g")
+ else
+ nid="0@lo"
+ fi
+ uuid=$(get_client_uuid $MOUNT)
+
+ echo "list nids on mdt:"
+ do_facet $SINGLEMDS "$LCTL list_param mdt.${FSNAME}*.exports.*"
+ echo "uuid from $nid:"
+ do_facet $SINGLEMDS "$LCTL get_param mdt.${FSNAME}*.exports.'$nid'.uuid"
+
+ found=$(check_uuid_on_mdt $nid | grep $uuid)
+ [ -z "$found" ] && error "can't find $uuid $nid on MDT"
+ found=$(check_uuid_on_ost $nid | grep $uuid)
+ [ -z "$found" ] && error "can't find $uuid $nid on OST"
+
+ # umount the client so it won't reconnect
+ manual_umount_client --force || error "failed to umount $?"
+ # shouldn't disappear on MDS after forced umount
+ found=$(check_uuid_on_mdt $nid | grep $uuid)
+ [ -z "$found" ] && error "can't find $uuid $nid"
+
+ echo "evict $nid"
+ do_facet $SINGLEMDS \
+ "$LCTL set_param -n mdt.${mds1_svc}.evict_client nid:$nid"
+
+ found=$(check_uuid_on_mdt $nid | grep $uuid)
+ [ -n "$found" ] && error "found $uuid $nid on MDT"
+ found=$(check_uuid_on_ost $nid | grep $uuid)
+ [ -n "$found" ] && error "found $uuid $nid on OST"
+
+ # check it didn't reconnect (being umounted)
+ sleep $((TIMEOUT+1))
+ found=$(check_uuid_on_mdt $nid | grep $uuid)
+ [ -n "$found" ] && error "found $uuid $nid on MDT"
+ found=$(check_uuid_on_ost $nid | grep $uuid)
+ [ -n "$found" ] && error "found $uuid $nid on OST"
+
+ cleanup
+}
+run_test 91 "evict-by-nid support"
+