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Date:      Fri, 24 May 1996 19:29:22 +0200 (MET DST)
From:      Wilko Bulte <wilko@yedi.iaf.nl>
To:        joerg_wunsch@uriah.heep.sax.de
Cc:        freebsd-scsi@freebsd.org, andreas@knobel.gun.de
Subject:   Re: dump and 32blocks limit
Message-ID:  <199605241729.TAA20959@yedi.iaf.nl>
In-Reply-To: <199605232113.XAA19528@uriah.heep.sax.de> from "J Wunsch" at May 23, 96 11:13:03 pm

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> As Wilko Bulte wrote:
> 
> > I'm not absolutely sure this is SCSI-only related but:
> > 
> > I grabbed the -current dump sources and found a 32 block  limit builtin
> > there. Comment sez: restore can't read >32, maybe a bug in the tapedriver.
> > 
> > I was aware of 64kbyte rawio limit, but this 32 is new to me. I ran
> > dumps with 128 (== 64kbyte) and never had restore nuke me.
> 
> The claim with the 32 KB blocking was Andreas Klemm's one.

Andreas, 
	Any more info on this??

> The 64 KB physio limit effectively limits the tape block size to this
> value, regardless of your dump or dd settings.

That was my understanding allright.

> cheers, J"org

> joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
_     __________________________________________________________________________
 |   / o / /  _   Wilko Bulte             email: wilko@yedi.iaf.nl
 |/|/ / / /( (_)  Private FreeBSD site  - Arnhem - The Netherlands
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