Need assistance with afio problem.
Michael E. Haws
michael at yonder.UUCP
Tue May 28 03:24:15 AEST 1991
In article <1991May26.203103.19212 at chinacat.unicom.com>, chip at chinacat.unicom.com (Chip Rosenthal) writes:
> In article <446 at yonder.UUCP> michael at yonder.UUCP (Michael E. Haws) writes:
> >find /usr /u -print | afio -oZ -L/back/log | dd of=/dev/rct0 ibs=10b obs=1000b
> I'm concerned that the `Z' option
> might be compressing the backup.
It is.
> If this is the case, methinks you
> are making a *big* mistake. For all intents and purposes, if one bit
> is corrupt in an LZW compressed file, the following contents are
> unrecoverable. Using compress on backup volumes is penny-wise and
> megatons-foolish.
>
> --
> Chip Rosenthal <chip at chinacat.Unicom.COM> | Don't play so
> Unicom Systems Development 512-482-8260 | loud, Mr. Collins.
It is my impression that you are suggesting that I never keep compressed
data on my hard disk, since this data would be subject to the same
potential problem when trying to recover it from a tape archive. Or have
I missed something?
As for the contents following a corrupt bit being unrecoverable, I
intentionally corrupted a random bit in a compressed file and
was able to successfully uncompress the file and although it did have
the random character corrupted, the remainder of the file was intact.
--
Michael E. Haws "Keep the blue side up" w - (303) 986-2370
boulder!yonder!michael h - (303) 232-0628
michael%yonder at csn.org
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