Subject: Re: AIC7XXX driver - No Tape support for writing
To: Gerald C. Simmons <>
From: John F. Woods <>
List: current-users
Date: 11/08/1997 11:01:17
> Problem no. 1 Re-Addressed - Can't use "z" with Tapes?

> Nov  8 07:14:53 dakkon /netbsd: st0: bad request, must be multiple of 512

That is your tape drive talking there; it insists on fixed block sizes.
(Most QIC tapes are like that, though the QIC-3080 and QIC-3095/TR4 tape
formats actually can cope with variable length records.)

Read the tar manual page, and look for the "--block-compress" option.