#!/bin/bash

PROCPATH='/proc/fs/lustre/osc/'

# get list of all file systems mounted
FSs=$(cd ${PROCPATH}; ls *-osc -1d | awk -F'-' '{print $1}' | sort -u)

for fs in ${FSs} 
 do
    printf "Lustre File System: %s\n" ${fs}
    OSTs=$(cd ${PROCPATH}; ls ${fs}-*-osc -1d | awk -F'-' '{print $2}')
##    printf "\tOSTs ==>"
#   Display list of all OSTs
##    for ost in ${OSTs}
##     do
##        printf "%s " ${ost}
##     done
##    printf "\n"
#   Show node that each OST lives on
    for ost in ${OSTs}
     do
        addr=$(cat ${PROCPATH}/${fs}-${ost}-osc/ost_conn_uuid | awk -F'@' '{print $1}')
        node=$(grep ${addr} /etc/hosts | awk '{print $2}')
        if [[ 'X' == 'X${node}' ]]
         then
            node="${addr}"
         fi
##        printf "\t\t%s %s\n" ${ost} ${node}
        printf "\t%s %s\n" ${ost} ${node}
     done
   
 done