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Full Discussion: Backup and restore
Operating Systems AIX Backup and restore Post 302076220 by uXion on Saturday 10th of June 2006 01:22:26 AM
Old 06-10-2006
Data Backup and restore

I have several H80 machines, all with AIX 4.3.3. On these machines I have mksysb running for rootvg backups and savevg for non-rootvg backups.

I'm trying to get a list of files on the tapes, but I can't seem to do it with tar for the mksysb images. I keep getting the directory checksum errors? Smit lists the files just fine though. I have been able to boot and install BOS from these tapes. How do I get a listing of files stored on these tapes and extract specific files to a differnt location?

I have tried using the restore and listvgbackup commands to list the files froms the savevg backups. But everything I try results in a i/o error or a media error. Even smit fails! How can I read these tapes and extract a sample of files so I know the backups are actually doing what they are intended to do?

Can someone please guide me as I am running out of ideas?
 

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AMFETCHDUMP(8)						  System Administration Commands					    AMFETCHDUMP(8)

NAME
amfetchdump - extract backup images from multiple Amanda tapes. SYNOPSIS
amfetchdump [-c | -C | -l] [-p | -n] [-a] [-O directory] [-d device] [-h | --header-file filename | --header-fd fd] [--decompress | --no-decompress | --server-decompress | --client-decompress] [--extract --directory directory [--data-path amanda|directtcp] [--application-property NAME=VALUE]*] [--decrypt | --no-decrypt | --server-decrypt | --client-decrypt] [--exact_match] [-o configoption...] config hostname [disk [ date [ level [ hostname [...] ] ] ]] DESCRIPTION
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. The dump are by default decompressed and decrypted. It will automatically use the Amanda catalog to locate available dumps on tape, in the same way that the find feature of amadmin(8) lists available dumps. The hostname, diskname, datestamp, and level dump specifications are further described in amanda-match(7). Note that at minimum a hostname must be specified. Unless -p is used, backup images are extracted to files in the current directory named: If a changer error occurs, or the -d option is given, then amfetchdump prompts for each required volume. hostname.diskname.datestamp.dumplevel OPTIONS
-p 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 facility). -h Output the amanda header as a 32K block to same output as the image. --header-fd fd Output the amanda header to the numbered file descriptor. --header-file filename Output the amanda header to the filename. -d device_or_changer Restore from this device or changer instead of the default, prompting for each volume. -O directory Output restored files to this directory, instead of to the current working directory. -c Compress output, fastest method available. -C Compress output, smallest file size method available. --decompress Always do the decompression, this is the default. --no-decompress Never do the decompression. --server-decompress Do the decompression only if the compression was done on the server. --client-decompress Do the decompression only if the compression was done on the client. --decrypt Always do the decryption, this is the default. --no-decrypt Never do the decryption. --server-decrypt Do the decryption only if the encryption was done on the server. --client-decrypt Do the decryption only if the encryption was done on the client. --exact-match The host and disk are parsed as exact values --extract Extract the backup on the server in the directory directory. --directory directory Where to extract the backup with the --extract option. Warning: All files in that directory can be removed. --data-path amanda|directtcp The data path to use with --extract, the default is to use the fatest data path. --application-property NAME=VALUE Application property to send to the application with --extract. -l Leave dumps in the compressed/uncompressed and encrypted/unencrypted state in which they were found on tape. It is a synonym for --no-decompression --no-decryption -a Assume that all tapes are already available, via tape changer or otherwise, instead of prompting the operator to ensure that all tapes are loaded. -n Do not reassemble split dump files at all, just restore each piece as an individual file. -o configoption See the "CONFIGURATION OVERRIDE" section in amanda(8). EXAMPLES
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 - CAVEATS
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. SEE ALSO
amanda(8), amanda-match(7), amadmin(8), amrestore(8) The Amanda Wiki: : http://wiki.zmanda.com/ AUTHORS
John Stange <building@nap.edu> National Academies Press Ian Turner <ian@zmanda.com> Zmanda, Inc. (http://www.zmanda.com) Amanda 3.3.3 01/10/2013 AMFETCHDUMP(8)
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