amfetchdump man page on Scientific

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AMFETCHDUMP(8)		System Administration Commands		AMFETCHDUMP(8)

       amfetchdump - extract backup images from multiple Amanda tapes.

       amfetchdump [-pcClawns] [-d device] [-O directory] [-b blocksize]
		   config hostname
		   [disk [ date [ level [ hostname [...] ] ] ]]
		   [-o configoption]...

       Amfetchdump pulls one or more matching dumps from tape or from the
       holding disk, handling the reassembly of multi-tape split dump files as
       well as any tape autochanger operations.

       It will automatically use the logs created by amdump(8) to locate
       available dumps on tape, in the same way that the find feature of
       amadmin(8) lists available dumps. If these logs are unavailable, it can
       search tape-by-tape to find what it needs, and can generate new logs to
       serve as an emergency tape inventory.

       The hostname, diskname, datestamp, and level dump pattern-matching
       works as in amrestore(8), with the added requirement that at minimum a
       hostname must be specified when not in inventory mode.

       Unless -p is used, backup images are extracted to files in the current
       directory named:


	   Pipe exactly one complete dump file to stdout, instead of writing
	   the file to disk. This will restore only the first matching
	   dumpfile (where "first" is determined by the dump log search

       -d device
	   Restore from this tape device instead of the default.

       -O directory
	   Output restored files to this directory, instead of to the current
	   working directory.

	   Compress output, fastest method available.

	   Compress output, smallest file size method available.

	   Leave dumps in the compressed/uncompressed state in which they were
	   found on tape. By default, amfetchdump will automatically
	   uncompress when restoring.

	   Assume that all tapes are already available, via tape changer or
	   otherwise, instead of prompting the operator to ensure that all
	   tapes are loaded.

	   Wait to put split dumps together until all chunks have been
	   restored. Normally, amfetchdump will attempt to read pieces of a
	   split file from tape in order, so that it can assemble them simply
	   by appending each file to the first. This option disables the
	   appending behavior, and instead restores each piece as an
	   individual file and reassembles them only after all have been

	       This requires at least double the size of your dump in free
	       disk space, in order to build the final assembled dumpfile.
	   This behavior is implicitly invoked in circumstances where knowing
	   the location of all dumps on tape in advance is not possible, such
	   as when you are restoring without log files.

	   Do not reassemble split dump files at all, just restore each piece
	   as an individual file.

	   Do not fast-forward straight to needed files on tape. This will
	   slow down most restores substantially. Only use this option if your
	   tape drive does not properly support the fast-forward operation.

       -b blocksize
	   Force a particular block size when reading from tapes. This value
	   will usually be autodetected, and should not normally need to be

       -o configoption
	   See the "CONFIGURATION OVERRIDE" section in amanda(8).

       All the examples here assume your configuration is called SetA.

       Here´s a simple case, restoring all known dumps of the host vanya to
       the current working directory.
       $ amfetchdump SetA vanya

       A more likely scenario involves restoring a particular dump from a
       particular date. We´ll pipe this one to GNU-tar as well, to
       automatically extract the dump.
       $ amfetchdump -p SetA vanya /home 20051020 | gtar -xvpf -

       Amfetchdump is dependent on accessing your server´s config, tape
       changer, and (normally) dump logs. As such, it´s not necessarily the
       most useful tool when those have all been wiped out and you desperately
       need to pull things from your tape. Pains have been taken to make it as
       capable as possible, but for seriously minimialist restores, look to
       amrestore(8) or dd(8) instead.

       amanda(8), amadmin(8), amrestore(8), tar(1), restore(8), :

       John Stange <>
	   National Academies Press

       Ian Turner <>
	   Zmanda, Inc. (

Amanda 2.6.1p2			  11/05/2009			AMFETCHDUMP(8)

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