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- .th RESTOR VIII 11/24/73
- .sh NAME
- restor \*- incremental file system restore
- .sh SYNOPSIS
- .bd restor
- key [ arguments ]
- .sh DESCRIPTION
- .it Restor
- is used to read magtapes dumped with the
- .it dump
- command.
- The
- .it key
- argument specifies what is to be done.
- .it Key
- is a character from the set
- .bd trxw.
- .s3
- .lp +5 3
- \fBt\fR The date that the tape was made and the date that
- was specified in the
- .it dump
- command are printed.
- A list of all of the i-numbers on the tape
- is also given.
- .s3
- .lp +5 3
- \fBr\fR The tape
- is read and loaded into the file system
- specified in
- .it arguments.
- This should not be done lightly (see below).
- .s3
- .lp +5 3
- \fBx\fR Each file on the
- tape is individually extracted into
- a file whose name is the file's i-number.
- If
- there are
- .it arguments,
- they are interpreted as i-numbers and only they are
- extracted.
- .s3
- .lp +5 3
- \fBc\fR If the tape overflows, increment the last character
- of its name and continue on that drive.
- (Normally it asks you to change tapes.)
- .s3
- .lp +5 3
- \fBf\fR Read the dump from the next argument file
- instead of the tape.
- .s3
- .lp +5 3
- \fBi\fR All read and checksum errors
- are reported, but will not
- cause termination.
- .s3
- .lp +5 3
- \fBw\fR In conjunction with the
- .bd x
- option,
- before each file is extracted,
- its i-number is typed out.
- To extract this file,
- you must respond with
- .bd y.
- .s3
- .i0
- The
- .bd x
- option is used to retrieve individual files.
- If the i-number of the desired file is not known,
- it can be discovered by following the file system
- directory search algorithm.
- First retrieve the
- .it root
- directory whose i-number is 1.
- List this file with
- .it "ls \*-fi 1."
- This will give names and i-numbers of
- sub-directories.
- Iterating, any file may be retrieved.
- .s3
- The
- .bd r
- option should only be used to restore
- a complete dump tape onto a clear file system
- or to restore an incremental dump tape onto this.
- Thus
- .s3
- /etc/mkfs /dev/rp0 40600
- .br
- restor r /dev/rp0
- .s3
- is a typical sequence to restore a complete dump.
- Another
- .it restor
- can be done to get an incremental dump
- in on top of this.
- .s3
- A
- .it dump
- followed by a
- .it mkfs
- and a
- .it restor
- is used to
- change the size of a file system.
- .sh FILES
- /dev/mt0
- .sh "SEE ALSO"
- ls (I), dump (VIII), mkfs (VIII), clri (VIII)
- .sh DIAGNOSTICS
- There are various diagnostics
- involved with reading the tape and writing the disk.
- There are also diagnostics if the i-list or the free list
- of the file system is not large enough to hold the dump.
- .s3
- If the dump extends over more than one tape,
- it may ask you to change tapes.
- Reply with a new-line when the next tape has been mounted.
- .sh BUGS
- There is redundant information on the tape
- that could be used in case of tape reading problems.
- Unfortunately,
- .it restor's
- approach is to exit if anything is wrong.
-