[Linux-Biella] tutils per tape DAT SCSI (lungo)

[LeOS]

LeOS wrote:
> 

> COSA C'E' ancora da fare?
> 
> il comando di restore
> ovvero

allora
stato fatto tutto quanto :)
il programma legge il tape, piglia il catalog, lo espande nella solita 
directory
poi se lo va a parsare riga per riga visualizzando quello ke serve

nel codice di sotto, non avendo qui il DAT, ho remarkato tutte li righe 
relative alle operazioni sul tape, ma a naso dovrebbe andare tutto 
quanto, btw, potete dare un'occhiata voi stessi al funzionamento, 
semplicemente nella home dell'utente che esegue il trestore create a 
manina la solita dir "tutils" e dentro ci copiate il catalog di esempio 
che avevo postato tempo fa.
questo vi dara' la possibilita' di giocare col programmino :)

buona vita a tutti, compreso lucabert ke mi ha copiato il saluto ma 
adesso lo registro e mi faccio pafare le royalties!

PS: ecco uno scrinsciot ;)

============================
Tape "BaBau!" created on
Mon Dec 30 21:18:28 CET 2002
============================

First file:

| File:         | Begin: | End: | Date:
| .bash_profile | 2      | 23   | Mon Dec 30 21:23:00 CET 2002


-------------------------------------------------------------
[p]revious file  -  [n]ext file  -  [r]estore file  -  e[x]it
[f]irst file  -  [l]ast file
-------------------------------------------------------------

Your choice: r

Restoring file: .bash_profile - Beginning Block: 2
Done!



il codice lo trovate qui di seguito:


# --- Create the temp dir in user home ---
if [ -e ~/tutils ] ; then
   echo "Skipping Directory creation"
else
   mkdir ~/tutils
fi
currentdir=$PWD

# --- Reach End Of Data on Tape ---
#mt-st -f /dev/tape eod

# --- Rewind the Tape to reach the begin of saved Catalog ---
#mt-st -f /dev/tape bsfm 3

# --- Restore the Catalog and view it ---
#cp /dev/tape ~/tutils
#tar xf ~/tutils/tape -C ~/tutils

cd ~/tutils

# --- Check the tape contents: if tape is just formatted, exit ---
lun=$(cat catalog |wc -l)
let lunnoheader=lun-6
if [ $lunnoheader -lt 6 ]; then
   echo "The tape is empty..."
   exit
fi

# --- funtions used, just to clean this dirty code ---

viewlist ()
{
   clear
   # --- print first 4 lines: header of the catalog ---
   head -n 4 catalog
   echo
   filename=$(head -n $namepos catalog | tail -n 1)
   begin=$(head -n $beginpos catalog | tail -n 1)
   end=$(head -n $endpos catalog | tail -n 1)
   ondate=$(head -n $datepos catalog | tail -n 1)
   if [ $beginpos = 8 ]; then
     let lastpos=lun-4
     echo "First file:"
   else
     if [ $beginpos = $lastpos ]; then
       echo "Last file:"
     else
       echo "Between First file and Last file ;)"
     fi
   fi
   echo
   begtemp=${begin##"At block "}
   let diff=`expr length $begtemp`-1
   begblock=`expr substr $begtemp 1 $diff`
   endtemp=${end##"At block "}
   let diff=`expr length $endtemp`-1
   endblock=`expr substr $endtemp 1 $diff`
   # --- Format the output ---
   echo -n "| File:"
   let difflen=`expr length $filename`-5
   for ((counter=1 ; counter<=difflen ; counter++))
   do
     echo -n " "
   done
   echo -n " | Begin:"
   let difflen=`expr length $begblock`-6
   for ((counter=1 ; counter<=difflen ; counter++))
   do
     echo -n " "
   done
   echo -n " | End:"
   let difflen=`expr length $endblock`-4
   for ((counter=1 ; counter<=difflen ; counter++))
   do
     echo -n " "
   done
   echo -n " | Date:"
   echo
   echo -n "| "$filename
   let difflen=5-`expr length $filename`
   for ((counter=1 ; counter<=difflen ; counter++))
   do
     echo -n " "
   done
   echo -n " | "$begblock
   let difflen=6-`expr length $begblock`
   for ((counter=1 ; counter<=difflen ; counter++))
   do
     echo -n " "
   done
   echo -n " | "$endblock
   let difflen=4-`expr length $endblock`
   for ((counter=1 ; counter<=difflen ; counter++))
   do
     echo -n " "
   done
   echo " | "$ondate
   echo
   echo
   echo "-------------------------------------------------------------"
   echo "[p]revious file  -  [n]ext file  -  [r]estore file  -  e[x]it"
   echo "[f]irst file  -  [l]ast file"
   echo "-------------------------------------------------------------"
   echo
   echo -n "Your choice: "
}


debug ()
{
   echo "| NamePOS: "$namepos" |   | BeginPOS: "$beginpos" |   | Lun: 
"$lun" |   | LunOK: "$lunok" |"
   echo
}

# --- position of the first file name, after the header of the catalog ---
namepos=6

while [ "$action" != x ]

do
   # --- in the catalog file lines change for filename, starting and 
ending position and date ---
   let beginpos=namepos+2
   let endpos=namepos+4
   let datepos=namepos+5

   viewlist

   read -n 1 action
   echo
   echo

   if [ $action = p ] ; then
     if [ $namepos -gt 6 ] ; then
       let namepos=namepos-7
     fi
   fi

   if [ $action = n ] ; then
     let lunok=lun-7
     if [ $namepos -lt $lunok ] ; then
       let namepos=namepos+7
     fi
   fi

   if [ $action = l ] ; then
     let namepos=lun-6
   fi

   if [ $action = f ] ; then
     let namepos=6
   fi

   if [ $action = r ] ; then
     echo "Restoring file: $filename - Beginning Block: $begblock"
     # --- routine di restore ---
     # mt-st -f /dev/tape seek $begblock
     # cp /dev/tape .
     # tar xf tape
     # cd $currentdir
     # mkdir restored
     # cd restored
     # tar zxf ~/tutils/$filename
     echo "Done!"
     exit
   fi

   if [ $action = x ] ; then
     echo
     echo "Nothing done..."
     cd $currentdir
     exit
   fi

   if [ $action = q ] ; then
     echo
     echo "Nothing done..."
     cd $currentdir
     exit
   fi

done

#cd $currentdir

# --- Clean temp dir ---
#rm -Rf ~/tutils