Re: tar: Cannot verify compressed archives

[Paul Eggert]

> From: address@hidden (Jacob Elder)
> Date: Fri, 4 Oct 2002 13:37:14 -0400
> 
> I need to produce archives that are compressed but also known to be valid.
> The manual suggests that I can use --compare, after "forcing some doubt in
> your operating system" to defeat the cache.
> 
> Is there a recommended way of doing this without requiring a human to eject
> and reload the tape?

Not that I know of.  However, if your tape is sufficiently long you
shouldn't have any problems with the OS cache.  So if you're worried
about it, you might make sure that every backup is large enough to
exceed the size of your cache.