User Info Analysis

Backups on the DLT tape drive

1. Log into pearl.imm.aps.anl.gov as user1
2. "cd /home/user1/BACKUPS"
3. Create a file which contains a list of the directories to back up.
   The default naming convention is NAMEYYMMDD where NAME is a personal identifier and YY MM and DD are the year, month and day. For example I might name a tape LURIO000306 for a tape made on March 6, 2000. A second tape made on the same day might be called LURIO000306b. The flag "-C" can be used to change to a certain directory before the backup. A typical file would look like:

       -C /opal1
       opalchilddir/dir1
       opalchilddir/dir2
       -C /ruby1
       rubychilddir/dir3
       rubychilddir/dir4
   

   Blank lines in the files will be ignored. (NEW!)
4. If starting a new tape type "namit -b filename" (e.g. namit -b LURIO000306)
5. If appending files to the end of the tape use "amit -a # filename" Here # refers to the record you want to start the append at, for example to start appending files after record number 6 type "amit -a 7 LURIO000306"
6. When done writing the tape make sure to switch the tape to read only
7. A hardcopy list of the .short files should be printed out and included with each tape. If a tape consists of serveral successive appends, e.g. LURIO00306a.short LURIO00306b.short ... LURIO00306n.short, all the short files should be appended to make up one single file, and that file should be the one printed with the tape. (Eventually amit will be able to search the tape for previous backups itself ...)

Hint:

In order to check in advance if the backup will be o.k. you may want to run it in simulation mode first. To do that, execute the namit commands with the flags "-bs" or "-as" instead of "-b" or "-a". If you do not get any error messages, run namit again with the regular flags.