+# Get all of the server target devices from a given server node and type.
+get_mnt_devs() {
+ local node=$1
+ local type=$2
+ local obd_type
+ local devs
+ local dev
+
+ case $type in
+ mdt) obd_type="osd" ;;
+ ost) obd_type="obdfilter" ;; # needs to be fixed when OST also uses an OSD
+ *) echo "invalid server type" && return 1 ;;
+ esac
+
+ devs=$(do_node $node "lctl get_param -n $obd_type*.*.mntdev")
+ for dev in $devs; do
+ case $dev in
+ *loop*) do_node $node "losetup $dev" | \
+ sed -e "s/.*(//" -e "s/).*//" ;;
+ *) echo $dev ;;
+ esac
+ done
+}
+
+# Get all of the server target devices.
+get_svr_devs() {
+ local i
+
+ # MDT device
+ MDTDEV=$(get_mnt_devs $(mdts_nodes) mdt)
+
+ # OST devices
+ i=0
+ for node in $(osts_nodes); do
+ OSTDEVS[i]=$(get_mnt_devs $node ost)
+ i=$((i + 1))
+ done
+}
+
+# Run e2fsck on MDT or OST device.
+run_e2fsck() {
+ local node=$1
+ local target_dev=$2
+ local extra_opts=$3
+
+ df > /dev/null # update statfs data on disk
+ local cmd="$E2FSCK -d -v -t -t -f -n $extra_opts $target_dev"
+ echo $cmd
+ local rc=0
+ do_node $node $cmd || rc=$?
+ [ $rc -le $FSCK_MAX_ERR ] || \
+ error "$cmd returned $rc, should be <= $FSCK_MAX_ERR"
+ return 0
+}
+
+# Run e2fsck on MDT and OST(s) to generate databases used for lfsck.
+generate_db() {
+ local i
+ local ostidx
+ local dev
+ local tmp_file
+
+ [ $MDSCOUNT -eq 1 ] || error "CMD is not supported"
+ tmp_file=$(mktemp -p $SHARED_DIRECTORY ||
+ error "fail to create file in $SHARED_DIRECTORY")
+
+ # make sure everything gets to the backing store
+ local list=$(comma_list $CLIENTS $(facet_host $SINGLEMDS) $(osts_nodes))
+ do_nodes $list "sync; sleep 2; sync"
+
+ do_nodes $list ls $tmp_file || \
+ error "$SHARED_DIRECTORY is not a shared directory"
+ rm $tmp_file
+
+ run_e2fsck $(mdts_nodes) $MDTDEV "--mdsdb $MDSDB"
+
+ i=0
+ ostidx=0
+ OSTDB_LIST=""
+ for node in $(osts_nodes); do
+ for dev in ${OSTDEVS[i]}; do
+ run_e2fsck $node $dev "--mdsdb $MDSDB --ostdb $OSTDB-$ostidx"
+ OSTDB_LIST="$OSTDB_LIST $OSTDB-$ostidx"
+ ostidx=$((ostidx + 1))
+ done
+ i=$((i + 1))
+ done
+}
+
+run_lfsck() {
+ local cmd="$LFSCK_BIN -c -l --mdsdb $MDSDB --ostdb $OSTDB_LIST $MOUNT"
+ echo $cmd
+ local rc=0
+ eval $cmd || rc=$?
+ [ $rc -le $FSCK_MAX_ERR ] || \
+ error "$cmd returned $rc, should be <= $FSCK_MAX_ERR"
+ echo "lfsck finished with rc=$rc"
+
+ rm -rvf $MDSDB* $OSTDB* || true
+ return 0
+}
+