On Wed, Sep 22, 1999 at 11:36:20AM +0200, Wolfgang Weisselberg wrote:
> Hi!
>
> Trying to kill the keyboard, [EMAIL PROTECTED] produced:
> > On Mon, 20 Sep 1999, Douglas Bollinger wrote:
>
> > > Second, and most importantly, is that using compression
> > > on a tar backup could result in total data loss in a archive after a bad
> > > spot in the tape, whereas going without compression should only result in
> > > losing the file with the bad tape sector.
>
bzip2 handles this OK - the archive is split into blocks of a few hundred K as
part of the compression, and each block is independently checksummed so that
a damaged archive can have all undamaged blocks recovered.
It also gives very good compression (much better than gzip), but uses a lot
of CPU so this is not useful for running a fast tape at full speed.
(I get 66% of a P2-450 used writing to a QIC-250 that does 80K/s.)
--
[EMAIL PROTECTED]
