FNALD0 VMS BACKUP TAPES

The fnald0 backup tapes have now been labeled and vaulted, and are available
for use.  At present you can restore the complete project directory, select
individual files, or check directory listings for all project directories with a
single tape, or for the first tapes from multivolume sets.  We are still working
on getting vmsbackup to read second or third tapes.
 
 

(1)  Procedure

            (a)    Find out the number of backup tapes for your project directory
                    from  Section (2).

            (b)    If there is just one tape, check the tape label from Section (3),
                    then proceed to Section (4).

            (c)    If there are two or three tapes, check the backup listings to find
                    whether the files you want are on the first tape.

                    The listings are on d0chb, in /RunI/local/fnald0disks.
                     (Remember that UNIX is case sensitive)

                    The listing for PRJ$ROOTnnn (/prj_root/nnn) is pnnn.list,
                    and for TMP$ROOTnnn (/tmp_root/nnn),  tnnn.list.

                     If you browse through the listing you will see where the second
                    and third tapes start.

            (d)    If the files you want are on second or third tapes, and if it is
                    critical that you have access to these files immediately, contact
                    Jean Rhoades (jrhoades@fnal.gov).  We will obtain them via VMS.

                    Please do not ask for files just to check that they are there.  We are
                    working on the tape mount problem, and we will inform you when
                    it is fixed.

                    There will be a core VMS system for the foreseeable future.  Your
                    files will not be abandoned.
 
 

(2)  Number of tapes for each directory

The following PRJ$ROOT directories have a single tape:  103, 200, 207, 211, 216,
220, 222, 224, 230, 232, 236, 242, 243, 244, 246, 247, 248, 250, 252, 253, 255,
256, 260, 263, 265, 266, 268, 270, 271, 273, 275, 277, 278, 281, 284, 285, 286,
287, 288, 291, 293, 294, 297, 298, 400, 401, 409, 411, 412, 413, 414, 417, 421,
422, 424, 902.

The following PRJ$ROOT directories have two tapes:  202, 203, 205, 206, 208, 209, 210, 212, 213, 226, 229, 231, 233, 235, 241, 245, 249, 251, 254, 259, 261, 267, 274, 276, 283, 289, 403, 407, 415, 416, 901, 903.

The following PRJ$ROOT directories have three tapes:  215, 219, 221, 240, 269,
292, 402, 406, 420, 423.
 

The following TMP$ROOT directories have a single tape:  101, 206, 208, 211, 215, 217, 218, 219, 220, 227, 231, 233, 235, 236, 237, 241, 246, 247, 248, 249, 250, 252, 253, 254, 255, 256, 258, 262, 264, 265, 266, 268, 270, 271, 273, 274, 277, 278, 279, 281, 283, 285, 288, 297, 298, 299, 400, 401, 404, 406, 900, 901.

The following TMP$ROOT directories have two tapes:  201, 202, 212, 213, 214,
216, 223, 225, 232, 234, 240, 244, 259, 269, 272, 291, 296, 403, 405.

The following TMP$ROOT directories have three tapes:  238, 289.
 
 
 

(3)  Tape labels

            The numbering scheme for vaulted tape(s) for PRJ$ROOTnnn (/prj_root/nnn) is:

                          vault label          external tape label          internal label

1st volume          COPnnn                       COPnnn                            Pnnn

2nd volume         COQnnn                     COPnnn02                        Pnnn02

3rd volume         CORnnn                      COPnnn03                        Pnnn03
 

             For TMP$ROOTnnn (/tmp_root/nnn), substitute T (U,V) for P (Q,R).

              Use the vault label to request a tape mount.
 
 

(4)  How to extract files

(1)             cd into the directory where you want the files restored and setup the products
                  you will need
cd scratch5
setup ocs
setup vmsbackup

(2)             It helps to send the operator advance notice of  which tape you will be using.
ocs_message -m  Hi, I will be using COPnnn

(3)             Check which tape drives are available, and allocate a drive.
ocs_tape
                You will get a list of drives with names like  d02ka1 or d0chb3.  Choose one that
                says it is unallocated, e.g. d02ka2
ocs_allocate -T d02ka2

(4)             Request tape COPnnn  be mounted readonly in  the drive you have allocated
ocs_request -t d02ka2 -v COPnnn -r
                This may take a while - if you have to wait >20 minutes, call the operators at 2746
                 to find out why.

(5)            Check that the right tape has been mounted in the right drive.
ocs_check_tape -t d02ka2 -r -v COPnnn
                You will get a message that tape Pnnn was expected - this is the internal label,
                 and there is no problem.

(6)             Obtain the device driver file for the drive you  are using - this is how you will
                  tell vmsbackup which tape to read.
ocs_devfile -t d02ka2
                You will get back an address like  /dev/rmt/tps15d2nrnsv.8500.

(7)             Run vmsbackup
vmsbackup -xcdev -f  /dev/rmt ... 850
                See below for other options.

(8)             When the job has finished, release the tape drive
ocs_dismount -t d02ka2
ocs_deallocate -t d02ka2
 

                    Further documentation on ocs is available in Chapter 16 of the
                   (red) Unix at Fermilab manual. 
 

                    Further documentation on vmsbackup is available at:
                                    http://www.fnal.gov/docs/products/vmsbackup/
                   You can list the options by typing vmsbackup.  xcdev  extracts all files,
                   listing files on the screen.  If you want to extract a specific file, use
                  vmsbackup -xcv -f  /dev/rmt ...850  "file name".
 
 

            (5)  Problems

                 Tape jobs are rarely easy.  All the vaulted tapes have been verified;  this
                     means that they have been read and the data on them has been checked.
                     Unfortunately it does not mean that they will be easy to read on any given
                     drive on any given day.

                      If you have problems with your tape jobs, try again, and again, preferably on
                      different drives.

                      If you have tried three or more times and still cannot read the tape, contact
                      Jean Rhoades (jrhoades@fnal.gov)  We will have a second set of tapes at D0,
                      and if necessary we will backup again from Unix.