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AMRESTORE(8)		System Administration Commands		  AMRESTORE(8)

NAME
       amrestore - low-level data-extraction from Amanda volumes

SYNOPSIS
       amrestore [--config config] [-r | -c | -C] [-b blocksize] [-f filenum]
		 [-l label] [-p] [-h] [--exact-match]
		 [--continue-on-filter-error] [-o configoption...]
		 [{changerspec}	| {[--holding] holdingfile}]
		 [hostname [ diskname [	datestamp [ hostname [ diskname	[ datestamp ...	] ] ] ]	]]

       Note that this is the only Amanda command which does not	take a
       configuration name as its first argument.

DESCRIPTION
       Amrestore is a very low-level tool for extracting data from Amanda
       volumes.	It does	not consult any	catalog	information or other metadata,
       basing its operations only on the headers found on the volume. This
       makes it	an appropriate tool for	bare-metal restores of an Amanda
       server, or other	situations where the catalog is	not available.

       See amfetchdump(8) and amrecover(8) for higher-level recoveries.

       The tool	does not reassemble split dumps, but can uncompress compressed
       dumps. Note that	decompression may fail for split parts after the
       first. If this occurs, extract the parts	without	decompressing,
       concatenate them, and decompress	the result.

       Data is restored	from the current volume	in changerspec,	or from	the
       holding file holdingfile. In most cases,	changerspec will name a
       particular device, e.g.,	tape:/dev/nst0 or s3:mybucket/tape-1.

       Only dumps matching the dump specification beginning with hostname are
       extracted. If no	specification is given,	every file on the volume (or
       the entire holdingfile) is restored. See	the "DUMP SPECIFICATIONS"
       section of amanda-match(7) for more information.

       Unless -p is used, candidate backup images are extracted	to files in
       the current directory named: hostname.diskname.datestamp.dumplevel

OPTIONS
       -b blocksize
	   Use the given blocksize to read the volume. The default is defined
	   by the device.

       -f filenum
	   Seek	to file	filenum	before beginning the restore operation.

       -l label
	   Check that the volume has label label.

       -p
	   Pipe	the first matching file	to standard output. This is typically
	   used	in a shell pipeline to send the	data to	a process like tar for
	   extraction.

       -c, -C
	   If the file is not already compressed, compress it using the
	   fastest (-c)	or best	(-C) compression algorithm. Note that
	   amrestore will not re-compress an already-compressed	file. Without
	   either of these options, amrestore will automatically uncompress
	   any compressed files. This option is	useful when the	destination
	   disk	is small.

       -h
	   Include 32k headers on all output files, similar to a holding file.
	   This	header can be read by another application or utility (see
	   Amanda::Header) during the next phase of processing.

       -r
	   Output raw files. This is similar to	-h, but	also disables any
	   automatic decompression and/or decryption. Output file names	will
	   have	a .RAW extension.

       --exact-match
	   The host and	disk are parsed	as exact values.

       --continue-on-filter-error
	   continue to the next	dump if	a filter (decompression/decryption)
	   fail.

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

EXAMPLES
       The following does an interactive restore of disk rz3g from host	seine,
       to restore particular files. Note the use of the	b option to restore,
       which causes it to read in units	of two 512-byte	blocks (1 Kbyte) at a
       time. This helps	keep it	from complaining about short reads.
	 amrestore -p /dev/nrmt9 seine rz3g | tar -xv

       The next	example	extracts all backup images for host seine. This	is a
       typical way to extract all data for a host after	a disk crash.
	 amrestore /dev/nrmt9 seine

       If the backup datestamp in the above example is 20070125	and seine has
       level 0 backups of disks	rz1a and rz1g on the tape, these files will be
       created in the current directory:
	 seine.rz1a.19910125.0
	 seine.rz1g.19910125.0

       You may also use	amrestore to extract a backup image from a holding
       disk file that has not yet been flushed to tape:
	 amrestore -p /amanda/20001119/seine.rz1a.2 | tar -xv

CAVEATS
       GNU-tar must be used to restore files from backup images	created	with
       the GNUTAR dumptype. Vendor tar programs	sometimes fail to read GNU Tar
       images.

SEE ALSO
       amanda(8), amanda-match(7), amfetchdump(8), amrecover(8)

       The Amanda Wiki:	: http://wiki.zmanda.com/

AUTHORS
       James da	Silva <jds@amanda.org>

       Stefan G. Weichinger <sgw@amanda.org>

       Dustin J. Mitchell <dustin@zmanda.com>
	   Zmanda, Inc.	(http://www.zmanda.com)

Amanda 3.3.9			  02/09/2016			  AMRESTORE(8)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | CAVEATS | SEE ALSO | AUTHORS

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