RESTOR(8) GENIX Programmer's Manual RESTOR(8)
NAME
restor - incremental file system restore
SYNOPSIS
/etc/restor key [ argument ... ]
DESCRIPTION
Restor is used to read magtapes dumped with the dump command. The
key specifies what is to be done. Key is one of the characters rRxt
optionally combined with f.
f Use the first argument as the name of the tape instead of the
default.
r or R
The tape is read and loaded into the file system specified in
argument. This should not be done lightly (see below). If the
key is R restor asks which tape of a multi volume set to start
on. This allows restor to be interrupted and then restarted
(an icheck -s must be done before restart).
x Each file on the tape named by an argument is extracted. The
file extracted is placed in a file with a numeric name supplied
by restor (actually the inode number). In order to keep the
amount of tape read to a minimum, the following procedure is
recommended:
Mount volume 1 of the set of dump tapes.
Type the restor command.
Restor will announce whether or not it found the files, give
the number it will name the file, and rewind the tape.
It then asks you to `mount the desired tape volume'. Type the
number of the volume you choose. On a multivolume dump the
recommended procedure is to mount the last through the first
volume in that order. Restor checks to see if any of the files
requested are on the mounted tape (or a later tape, thus the
reverse order) and doesn't read through the tape if no files
are. If you are working with a single volume dump or the
number of files being restored is large, respond to the query
with `1' and restor will read the tapes in sequential order.
If you have a hierarchy to restore you can use dumpdir(8) to
produce the list of names and a shell script to move the
resulting files to their homes.
t Print the date the tape was written and the date the filesystem
was dumped from.
Printed 11/16/83 1
RESTOR(8) GENIX Programmer's Manual RESTOR(8)
The 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
/etc/mkfs /dev/rrp0g 145673
restor r /dev/rrp0g
is a typical sequence to restore a complete dump. Another restor
can be done to get an incremental dump in on top of this.
A dump followed by a mkfs and a restor is used to change the size of
a file system.
FILES
default tape unit varies with installation
rst*
SEE ALSO
dump(8), mkfs(8), dumpdir(8)
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.
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.
BUGS
There is redundant information on the tape that could be used in
case of tape reading problems. Unfortunately, restor doesn't use
it.
Printed 11/16/83 2