Instalação do Siemens NX 10: Não foi possível determinar o sistema de arquivos contendo / usr / ugs100

Question

Eu depuro o script para instalar os aplicativos do Siemens NX 10 para o Debian 8.2 e recebo o aviso:

Could not determine filesystem containing /usr/ugs100
space calculations may be incorrect.

O código-fonte do script: ug_install (muito grande para ser postado aqui). O fragmento de código que gera esta mensagem, juntamente com as duas funções que chama e outras funções relevantes:

Init_fs_arrays() # Initializes the File System array.
{       # RKB Thu Jan 31 22:39:57 PST 1991
        # RKB Updated: Sep 28 15:26:28 PDT 1992
        # RKB updtd: Jul  6 22:51 93 V10.1.1 make generic.
        # RKB updtd: Mar  7 18:34 94 V103P2E streamline, rm "set --".
        # RKB updtd: Mar  9 22:34 94 V103P2E rm test -s for FS_FILE, just wait f
        # RKB updtd: Wed Apr 20 2005 NX4P11 Added Linux support.
        # This function initializes the FS_NAME & FS_FREE 
        # arrays based on the contents of $FS_FILE
        FS_FILE="$UGS_TMP/filesystem_info" # File name to read the results from.
        $VECHO "${MSG}Initializing File System array ..."
        wait $SIZE_FS_PID # in case the file is not ready, wait for the bg job.
        I=0 # Initialize the index
        # Linux
        # cat $FS_FILE | while read NAME SPACE  ; do
        # Linux cant do "cat file | while read" "must use while read done < file
        while read NAME SPACE ; do
                FS_NAME[$I]=$NAME ; FS_FREE[$I]=${SPACE:=0} ; FS_NEEDED[$I]=0
                ((I+=1))  # Increment the index.
        done < $FS_FILE
        return 0
} # End of Init_fs_arrays

Get_fsindex() # Get the index number to supplied file system name. 
{       # RKB Mon Jan 21 21:00 91
        # RKB Mar  8 23:59 94 V103P2E chg to use while loop not grep -n. faster.
        : ${FS_NAME[*]:?} # Required variable internal check.
        : ${1:?} # Required arg internal check.
        I=0 # Init the index counter
        # Loop thru the FS_NAME array to get index number for filesystem in arg 
        while [ $I -le ${#FS_NAME[*]} ] ; do
                [ $1 = "${FS_NAME[$I]}" ] && { echo $I ; return 0; }
                ((I+=1)) # Increment the index.
        done 
        unset FS_INDEX ; 
        return 1 # Didn't find the file system.
} # End of Get_fsindex

Get_fs_info() # Returns filesystem info for the directory argument.
{   
    # Requires 2 global variables.
    : ${DF_CMD:?cmd var must be set to use this function. }
    : ${AWK_CMD:?cmd var must be set to use this function. }
    # Requires 2 args; a switch and a target directory.
    TARGET=$2 ; : ${TARGET:?} # Internal check
    #
    # If dir doesn't exist, check parent.
    while [ ! -d $TARGET ] ; do
        [ -f $TARGET ] && { # error if a file exists.
            print "${ERR}directory name expected. file exists: $TARGET" >&2
            return 1 ;
        }
        TARGET='dirname $TARGET'
    done 
    #
    # Do appropriate action based on the switch. The options are:
    # use -sp to get free space, -fs for real filesystem name, -mnt returns
    # the mount point and -nfs returns true if the filesystem is NFS mounted, 
    # and false if it's not.
    #
    # Set machine specific number for the df field containing filesystem.
    [ $MACHINE = IRIX -o $MACHINE = IRIX64 ] && N=6 || N=5
    case $1 in 
        -fs*)  $DF_CMD $TARGET | tr "2" " " | $AWK_CMD '{print $(NF-$N)}' ;;
        -mnt*) $DF_CMD $TARGET | tr "2" " " | $AWK_CMD '{print $NF}'      ;;
        -nfs)  $DF_CMD $TARGET | tr "2" " " | $AWK_CMD '{print $(NF-$N)}' | grep ":/" >$NULL || return 1 ;;
        -sp*)  $DF_CMD $TARGET | tail -1 | $AWK_CMD '{printf("%d",$(NF-2))}' ;;
    esac
    return 0
} # Get_fs_info

…
    SPACE_REQUIRED_KB=0 
    # Get the mount point for BASE_DIR.
    BASE_MNT_PT='Get_fs_info -mnt $BASE_DIR' || {
            print "${WARN}Could not determine mount point for $BASE_DIR
                              \r\tFile System information may be incorrect. 
    } # Shouldn't be any problem, but just to be safe.
    FS_INDEX='Get_fsindex $BASE_MNT_PT' || {
            print "${WARN}Could not determine filesystem containing $BASE_DI
                              \r\tspace calculations may be incorrect. "
    } # Shouldn't be any problem, but just to be safe.
    #

O conteúdo do arquivo temporário /tmp/filesystem_info :

/dev    10240
/run    1621732
/dev/shm    4031816
/run/lock   5116
/dev/mqueue 0
/dev/hugepages  0
/boot/efi   72815
/run/user/116   815520
/run/user/1000  815484

1. Que a função Get_fs_info retorna?
2. Como entender o conteúdo do arquivo filesystem_info ?