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BB-J713A-BM
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new-subsys/dumper.hlp
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DUMPER is a TOPS-20 utility whose function is to transfer files
between disk storage and 9-track magnetic tape. It is invoked by
giving the DUMPER command when you see the "@" prompt at TOPS-20
executive command level. DUMPER will prompt for a command, which will
have the following format:
DUMPER>command arguments
command is a DUMPER action-command, tape-positioning command, or
status-command.
arguments is a file specification, date, density, parity, number,
or saveset name, depending on the command. Dates are in
the form day-month-year. For example, type July 21,
1975 as 21-JUL-75. Times are in 24-hour format
(hh:mm:ss), or in AM/PM form. Thus 9:23 in the evening
is either 21:23, or 9:23 PM. Filespecs are in the form
dev:<dir>name.typ.gen. Use of * and % wildcard
characters is permitted. Use commas to separate
multiple source file specifications. A saveset is a
group of files on tape that were saved as the result of
one SAVE command to DUMPER. A saveset name is a string
of alphanumeric characters that is used as a title for a
saveset.
DUMPER Commands
ACTION-COMMANDS: These commands start, stop, interrupt, or continue a
file transfer or file check.
CHECK (ALL TAPE FILES)
Checks the files in the current saveset to make sure that they
agree with the files on disk. DUMPER prints a message if the
files do not agree. Be sure to position the tape to the
beginning of the saveset before giving the CHECK command.
CONTINUE
Continues a CHECK, RESTORE, RETRIEVE, SAVE, or
tape-positioning command after you have typed a CTRL/E to halt
it. If you have prevented DUMPER from continuing, DUMPER
prints ?CANNOT CONTINUE on your terminal.
CTRL/E
Halts the action of a CHECK, RESTORE, RETRIEVE, SAVE, or
tape-positioning command. When DUMPER processes the CTRL/E,
it prints a message, suspends the action, then prints the
DUMPER prompt.
Interrupting...
DUMPER>
After typing CTRL/E, you may give a CONTINUE, DIRECTORIES,
EXIT, FILES, HELP, or SILENCE command. If you give any other
command, DUMPER loses the information necessary to continue
the action you halted.
EXIT
Exits immediately to TOPS-20 command level.
PRINT (DIRECTORY OF TAPE ONTO FILE) destination
Prints a directory of the current saveset to the destination
file specification. If you omit the destination file
specification or use recognition, the destination defaults to
TTY: (your terminal).
QUIT
Same function as the EXIT command.
RESTORE (TAPE FILES) sources (TO) destination
Restores the magnetic tape source file(s) to disk with the
given destination file specification(s). If you do not type a
source file specification, DUMPER uses *.*.*. If you do not
type a destination specification, DUMPER assumes it is the
same as the source specification. When DUMPER begins
restoring files to a directory, it prints the message:
LOADING FILES INTO <directory>
If you are restoring files from a directory other than yours,
you must specify that directory in the source file
specification. If files exist in the destination directory
with the same names and types as the files on the tape, DUMPER
performs according to the setting of the supersede control
(see the SUPERSEDE command).
RETRIEVE (FILES) filespec
Instructs DUMPER to process the requests in the system file
retrieval queue. A wildcarded filespec can be used to specify
the files to be retrieved. If no filespec is given, all files
in the queue will be processed.
SAVE (disk FILES) [switch] sources (AS) destination
Saves the disk source file(s) onto magnetic tape. If you do
not give any arguments to the SAVE command, DUMPER saves all
the files in your connected directory. As DUMPER saves files,
it reports its progress at the terminal (refer to the FILES
and DIRECTORIES commands). If all the files cannot fit on one
tape, DUMPER requests that the next tape volume in the set be
mounted. After this is done, DUMPER prints a header line and
resumes the save operation.
Switches for the SAVE command are:
/ARCHIVE - Requests that DUMPER save only files that have
been marked for archival
/MIGRATE - Requests that DUMPER save only files that have
been marked for migration
/FULL-INCREMENTAL - Saves all specified files and marks
each file as having been saved
/INCREMENTAL:n - Saves all files that have either: not yet
been saved on n tapes, or been modified or created since
the last INCREMENTAL or FULL-INCREMENTAL run
/NOINCREMENTAL - Files will not be marked as saved (this is
the default)
TAPE-POSITIONING COMMANDS: These commands control the position of the
tape without transferring any file information between the tape and
disk.
EOT
Skips to the end of the last saveset on the tape and prints
the message:
Tape positioned after last saveset
If any savesets are encountered, DUMPER prints their names.
REWIND argument
If the argument is CURRENT-VOLUME or no argument is given, the
currently-mounted volume is rewound to the beginning of tape
(BOT). If the argument is SWITCHING followed by a number,
DUMPER switches to the specified volume and rewinds it.
SKIP (NUMBER OF SAVESETS) n
Skips the tape over n savesets. If n is 0, the tape is
backspaced to the beginning of the current saveset. A
negative value for n backspaces over n savesets.
UNLOAD
Unloads the tape from the drive. This command works only for
MTA devices. Use the system command DISMOUNT TAPE to unload a
MOUNTed tape device (MT device).
STATUS-COMMANDS: These commands set parameters that affect the
operation of the CHECK, RESTORE, RETRIEVE, and SAVE commands. Once
you set a parameter, it stays in effect until you change it or restart
DUMPER.
ABEFORE (DATE AND TIME) date time
Includes only those files that were accessed by a non-write
operation (i.e., typed, printed, or read in some manner)
before the given date and time.
ACCOUNT (OF RESTORED FILES FROM) location
Specifies that any file being restored will have either the
system-default account (usually your current account) or the
account that was stored with the file. Normally, DUMPER uses
the system default.
ASINCE (DATE AND TIME) date time
Includes only those files which were accessed by a non-write
operation (i.e., typed, printed, or read in some manner) since
the given date and time.
BEFORE (DATE AND TIME) date time
Includes only those files which were created or last written
(i.e., whose contents were changed) before the given date and
time.
[NO] CHECKSUM (FILES) type
Turns on (or off) checksumming. There are two types of
checksum that may be specified: SEQUENTIAL and BY-PAGES.
Sequential checksums stop at EOF. In interchange mode, only
sequential checksums should be used. BY-PAGES checksums
include every existing word of every existing page of a file.
This command works like the CHECKSUM subcommand in the TOPS-20
command language. When checksumming is turned on, it is
causes checksums to be computed during the save and print
commands.
[NO] CREATE (DIRECTORIES FROM TAPE DATA)
Requests (or suppresses if you type NO) the creation of user
directories from directory information on the tape.
DENSITY (OF MAGTAPE) n
Sets the tape density to the given number of bits per inch
(BPI). The density must be 200, 556, 800, 1600, 6250, or
job-default (set by the system command SET TAPE DENSITY). If
you do not give the DENSITY command, DUMPER uses the density
listed by the system command INFORMATION (ABOUT)
TAPE-PARAMETERS. If the tape is labeled, the density of the
tape is already determined by the label information on the
tape.
[NO] DIRECTORIES
Starts (or stops, if you type NO) printing on your terminal
each directory name as the directory is saved or restored.
Normally, DUMPER prints each directory name.
[NO] FILES
Starts (or stops, if you type NO) printing on your terminal
each file specification as the file is saved or restored.
Normally, DUMPER does not print each file specification.
FORMAT (VERSION NUMBER IS) n
Allows DUMPER to read and write DUMPER tapes that were written
with older versions of DUMPER. The default format is 4;
BBN-TENEX users should use 0 to read and write tapes created
by BBN-DUMPER.
HELP
Prints a list of the valid DUMPER commands on your terminal.
[NO] INDUSTRY (COMPATIBLE 36-BIT MODE)
Specifies that DUMPER will read and write tapes using the
INDUSTRY-COMPATIBLE tape data mode. DUMPER normally uses
CORE-DUMP mode.
[NO] INITIAL (FILESPEC) filespec
Starts (or stops, if you type NO) checking, restoring, or
saving at the file identified by filespec.
[NO] INTERCHANGE (FORMAT)
Starts (or stops, if you type NO) using the DECSYSTEM-10
(TOPS-10 BACKUP) interchange format in reading and writing
tapes.
[NO] LIST (LOG INFORMATION ON FILE) filespec
Makes a list of the files transferred in the file identified
by filespec. If you do not give a file specification, DUMPER
uses the file LPT:DUMPER.LOG. By default, LIST is turned off.
MBEFORE (DATE AND TIME) date time
Include only those files modified (i.e., written, created,
appended, or renamed) before the specified date and time.
MSINCE (DATE AND TIME) date time
Includes only those files modified (i.e., written, created,
appended, or renamed) since the specified date and time.
PARITY (OF MAGTAPE) type
Sets the parity of the current magnetic tape to EVEN or ODD.
DUMPER normally uses the parity listed in the system command
INFORMATION (ABOUT) TAPE-PARAMETERS.
PROTECTION (OF RESTORED FILES FROM) location
Takes the protection of the restored files from the system
default (usually 770000) or from the tape.
SET BLOCKING-FACTOR (TO) n (RECORDS)
Sets the number of logical records per physical record written
by DUMPER. The default value is 1.
SET TAPE-NUMBER (DECIMAL NUMBER) n
Used for multi-reel savesets when continuing a restore after a
crash or when restoring a file non-sequentially from a
multi-reel saveset. Also used for continuing a save after a
crash:
DUMPER>INITIAL <JONES>*.*.*
DUMPER>SET TAPE-NUMBER 4
DUMPER>SAVE
[NO] SILENCE
Stops (or starts, if you type NO) printing directory names and
file specifications as the files are saved or restored.
SINCE (DATE AND TIME) date time
Includes only those files that were created or last written
(i.e., whose contents were changed) since the specified date
and time.
SSNAME name
Specifies the name to be written in the saveset header on the
tape. The name may by any string of up to 30 characters long.
SUPERSEDE condition
Sets the condition under which DUMPER will supersede a disk
file with a magnetic tape file of the same file name and type.
Use ALWAYS when you always want to supersede the disk file
with the tape file. Use NEVER when you never want to
supersede the disk file; in this case, a file is transferred
from tape only if there is no disk file in the directory with
the same file name and type. Use OLDER when you want the tape
file to supersede only older disk files; in this case, a tape
file is transferred to disk file. If you do not give a
SUPERSEDE command, DUMPER uses SUPERSEDE OLDER. Refer to the
RESTORE command.
TAPE (FILESPEC) tapespec
Specifies the tape device to be used for file transfers. The
tapespec is either a physical tape drive (MTAn:), a logical
tape device (MTn:), or a logical name. If the device is not
available to your job, DUMPER prints:
?INVALID FILESPEC, DEVICE IS NOT AVAILABLE TO THIS JOB
Wait until you can MOUNT or ASSIGN a magnetic tape to your
job. You do not have to give a TAPE command if you assign a
magnetic tape device name to the logical name MTA-DUMPER.
EXAMPLES
1. Saving all the files in your connected directory, followed by
checking the files on tape against the disk:
@MOUNT TAPE 000442: /WRITE-ENABLED
[Waiting for Tape/Structure Mount]
[Tape set 000442:, volume 000442 mounted]
[000442: defined as MT2:]
@DUMPER
DUMPER>TAPE 000442:
DUMPER>REWIND
DUMPER>SSNAME REFERENCE FILES
DUMPER>SAVE (DISK FILES)
DUMPER tape # 1 Volid 000442, REFERENCE FILES, Tuesday, 1-May-79 0646
PS:<R.ACE>
Total files dumped = 19
Total pages dumped = 108
DUMPER>REWIND
DUMPER>CHECK
DUMPER tape # 1 Volid 000442, REFERENCE FILES, Tuesday, 1-May-79 0646
End of saveset
DUMPER>EXIT
@DISMOUNT TAPE 000442:
[Tape dismounted, logical name 000442: deleted]
2. Saving a single file on tape:
@MOUNT TAPE TEST: /WRITE-ENABLED
[Waiting for Tape/Structure Mount]
[Tape set TEST:, volume TEST mounted]
[TEST: defined as MT0:]
@DUMPER
DUMPER>TAPE TEST:
DUMPER>REWIND
DUMPER>SSNAME MEMO TO USERS
DUMPER>FILES
DUMPER>SAVE (DISK FILES) MEMO.RNO
DUMPER tape # 1 Volid TEST, MEMO TO USERS, Tuesday, 1-May-79 0646
PS:<R.ACE>
MEMO.RNO.1 (AS) MEMO.RNO.1 [OK]
Total files dumped = 1
Total pages dumped = 1
DUMPER>REWIND
DUMPER>CHECK
DUMPER tape # 1 Volid TEST, MEMO TO USERS, Tuesday, 1-May-79 0646
PS:<R.ACE>MEMO.RNO.1;P777700;AMONITOR
End of saveset
DUMPER>EXIT
@DISMOUNT TAPE TEST:
[Tape dismounted, logical name TEST: deleted]
3. Restoring files from the second saveset on the tape to disk:
@MOUNT TAPE BACK1: /WRITE-ENABLED
[Waiting for Tape/Structure Mount]
[Tape set BACK1:, volume BACK1 mounted]
[BACK1: defined as MT2:]
@DUMPER
DUMPER>TAPE BACK1:
DUMPER>REWIND
DUMPER>SKIP (NUMBER OF SAVESETS) 1
DUMPER tape # 1 Volid BACK1, DATA FILES, Tuesday, 1-May-79 0712
DUMPER tape # 1 Volid BACK1, PROGRAMS, Tuesday, 1-May-79 0720
DUMPER>RESTORE (TAPE FILES)
DUMPER tape # 1 Volid BACK1, PROGRAMS, Tuesday, 1-May-79 0720
Loading files into PS:<R.ACE>
PS:<R.ACE>TEST1.FOR.1;P777700;AMONITOR (TO) TEST1.FOR.1 [OK]
PS:<R.ACE>TEST2.FOR.1;P777700;AMONITOR (TO) TEST2.FOR.1 [OK]
End of saveset
DUMPER>EXIT
@DISMOUNT TAPE BACK1:
[Tape dismounted, logical name BACK1: deleted]