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dumpdir(1m) [v7 man page]

DUMPDIR(1M)															       DUMPDIR(1M)

dumpdir - print the names of files on a dump tape SYNOPSIS
dumpdir [ f filename ] DESCRIPTION
Dumpdir is used to read magtapes dumped with the dump command and list the names and inode numbers of all the files and directories on the tape. The f option causes filename as the name of the tape instead of the default. FILES
default tape unit varies with installation rst* SEE ALSO
dump(1), restor(1) DIAGNOSTICS
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, dumpdir doesn't use it. DUMPDIR(1M)

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DUMP(1M)																  DUMP(1M)

dump - incremental file system dump SYNOPSIS
dump [ key [ argument ... ] filesystem ] DESCRIPTION
Dump copies to magnetic tape all files changed after a certain date in the filesystem. The key specifies the date and other options about the dump. Key consists of characters from the set 0123456789fusd. f Place the dump on the next argument file instead of the tape. u If the dump completes successfully, write the date of the beginning of the dump on file `/etc/ddate'. This file records a separate date for each filesystem and each dump level. 0-9 This number is the `dump level'. All files modified since the last date stored in the file `/etc/ddate' for the same filesystem at lesser levels will be dumped. If no date is determined by the level, the beginning of time is assumed; thus the option 0 causes the entire filesystem to be dumped. s The size of the dump tape is specified in feet. The number of feet is taken from the next argument. When the specified size is reached, the dump will wait for reels to be changed. The default size is 2300 feet. d The density of the tape, expressed in BPI, is taken from the next argument. This is used in calculating the amount of tape used per write. The default is 1600. If no arguments are given, the key is assumed to be 9u and a default file system is dumped to the default tape. Now a short suggestion on how perform dumps. Start with a full level 0 dump dump 0u Next, periodic level 9 dumps should be made on an exponential progression of tapes. (Sometimes called Tower of Hanoi - 1 2 1 3 1 2 1 4 ... tape 1 used every other time, tape 2 used every fourth, tape 3 used every eighth, etc.) dump 9u When the level 9 incremental approaches a full tape (about 78000 blocks at 1600 BPI blocked 20), a level 1 dump should be made. dump 1u After this, the exponential series should progress as uninterrupted. These level 9 dumps are based on the level 1 dump which is based on the level 0 full dump. This progression of levels of dump can be carried as far as desired. FILES
default filesystem and tape vary with installation. /etc/ddate: record dump dates of filesystem/level. SEE ALSO
restor(1), dump(5), dumpdir(1) DIAGNOSTICS
If the dump requires more than one tape, it will ask you to change tapes. Reply with a new-line when this has been done. BUGS
Sizes are based on 1600 BPI blocked tape. The raw magtape device has to be used to approach these densities. Read errors on the filesys- tem are ignored. Write errors on the magtape are usually fatal. DUMP(1M)
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