Glen,
Thanks for this information. I don't think I have seen this any
place else.
Jon
<snip>
Unix tar files have a length that is a multiple
of 512. I would expect either RECFM=FB LRECL=512,
or RECFM=U and a block size some multiple of 512.
Each file stored in a tar file has a 512 byte header, and
is padded to the next 512 byte boundary. If you change
the blocksize, the data should be fine but you sometimes
get a warning when tar gets to the end of the file.
The blocksize is specified on the tar command with the b
option as a multiplier of 512. That is, the default of 20
gives a 10240 byte BLKSIZE.
</snip>
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