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mksysb file packing

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Operating Systems AIX mksysb file packing
# 1  
Old 01-25-2007
mksysb file packing
Hi,

I have a tape made with mksysb on an AIX machine that will not restore, the system is dead to the point of needing an op sys reload.

I am trying to restore some critical data files and can read the tape image with dd on another system (SCO). I have worked out the file headers enough to bring off the files from the backup, but mksysb has packed (compressed) files with any great size.

Does anyone know what packing algorithm is used so I can unpack the files ? its not standard pack or compress from what I can tell.

Any help greatfully received !

Thanks.
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LEARN ABOUT REDHAT

amverify

AMVERIFY(8)						      System Manager's Manual						       AMVERIFY(8)

NAME

       amverify - check an Amanda tape for errors

SYNOPSIS

       amverify config [ slot [ runtapes ] ]

DESCRIPTION

       Amverify  reads	an  Amanda  format  tape  and makes sure each backup image can be processed by amrestore and, if possible, the appropriate
       restore program (e.g. tar).

       Amverify runs amrestore on each file of the tape and pipes the output to a restore program (if available) with an option to create a  cata-
       logue of the backup.  The catalogue itself is discarded.  Only the success or failure of the operation itself is reported.

       If  the	backup image cannot be processed by the restore program, e.g. if it was written on a different operating system, the image is sent
       through dd to /dev/null.  This still determines if the tape is readable, but does not do any internal consistency check on the image.

       If config is set up to use a tape changer, the slot argument may be used to choose the first tape to process.  Otherwise, the current  slot
       is used.

       The runtapes configuration parameter determines how many tapes are processed unless it is specified on the command line.

       See the amanda(8) man page for more details about Amanda.

AUTHOR

       Axel Zinser <fifi@icem.de>

SEE ALSO

       amrestore(8), amanda(8), amverifyrun(8)

																       AMVERIFY(8)