restoring from tape

UserPreferences

1. 3B2 tape restoral
2. Stratus tape restoral

3B2 tape restoral

To restore a filesystem and an individual customer's data:

1. If restoring data for a specific customer, determine the processor and filesystem of their home directory. For example, on any node processor type:
2. cdflat account name
3. Call site where processor is located and ask tech to put in tape with date of data which needs to be restored. Tell them in which tape drive, A, B or C (i.e. TOAU, TOBU or TOCU) to place the tape. All the processors on a 3B2 node should be able to access any available tape drive.
4. Check to make sure correct tape is in the drive and it's readable.
• To read tape label and verify correct tape on an older drive, type:
• ttape -i -t /dev/rmt/etapeN
• Drive for A processor is etape1, B is etape2, C is etape3. You can use any of the tape drives and read them from any processor on the node.
• For a newer drive:
• dtape -i -t /dev/rmt/dat#
• To be sure of which one to use type ls -al /dev/rmt and look at bottom of output for etape or dat.
5. Verify spare slice is available and usable.
• c10t6d0s8 and c6t6d0s8 are spare slices. Filesystem w/old date gives indication spare has been used previously is probably good
• Must unmount /mnt directory before restoring tape!

mount -Fs5 /dev/dsk/c6t6d0s8 /mnt 
ls -al /mnt 
umount /mnt 

6. Restore:
• For etape, nohup ttape -i -t /dev/rmt/etapeN filesystem (i.e. dl05000) /dev/dsk/c6t6d0s8 &
• For DAT tape, nohup dtape -i -t /dev/rmt/datN filesystem /dev/dsk/c6t6d0s8 &
• tail -f nohup.out to watch process and find out when done
7. mount -Fs5 /dev/dsk/c6t6d0s8 /mnt
8. Copy files.
1. For an individual customer's files, advisable to create a .RESTORED directory under customer's home directory. Note that this is a "dot" directory; this will prevent mmcleanup from touching it.
2. Copy files from /mnt/(path to customer's home directory minus filesystem)/(directory with files customer wants) to directory where saving files.
• Example: cp /mnt/10000/10400/10445/in/* /mn10000/10000/10400/10445/.RESTORED/
3. Set permissions and ownership of files so Customer Service can access them. Tell Customer Service where the files have been restored to.

Stratus tape restoral

Example:

S-lxau_root > srestore 

Use 301.srestore for non-upgraded nodes using older version of Unix, 301.0 not .1.

Enter tape device for restore(ie c4a1d5): c6a1d2 
Rewinding Tape 

Enter tape number(1-6[1]): 

For POLO: drive 1 = c0a2d0, drive 2 = c0a2d1

tapecntl -w /dev/rmt/c6a1d2            
Enter   1       for /restore1 
        2       for /restore2 
   [1]:  
Backup made on Sat Feb 28 1998 at 04:05:43 GMT 
 
Enter   0       exit 
        1       lx25000 
        2       lx30000 
      : 1 
Enter   f       for full restore 
        d       to enter file or directory 
        i       for interactive 
      : i 
 
vxrestore > pwd 
/ 
vxrestore > ls     
.: 
 25000/         economaster/   junkmail/      mortician/     shared/ 
 autodeliver/   edi/           lost+found/    mtqueue/       surrogate/ 
 crdir/         fxcnvt/        mime/          pomaster/      uucp/ 
 dispatcher/    internet/      mm.compress    premigrate/ 

cd to customer directory or whatever directory to restore.

vxrestore > cd 10000/10850/10853 
   
vxrestore > pwd 
/25000/25050/25097 

add directory to restore

vxrestore > add in 
Warning: ./25000: File exists 
Warning: ./25000/25050: File exists 
Warning: ./25000/25050/25097: File exists 
Warning: ./25000/25050/25097/codes: File exists 
 
vxrestore > extract  
You have not read any tapes yet. 
Unless you know which volume your file(s) are on you should start 
with the last volume and work towards the first. 
Specify next volume #: 1 
set owner/mode for '.'? [yn] n 
vxrestore > quit 
Procedure Complete - Rewinding Tape 

It's done; copy the needed files over to .RESTORED/ in the customer directory.