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Date:      Sun, 24 May 1998 21:47:06 +0200
From:      Ollivier Robert <roberto@keltia.freenix.fr>
To:        freebsd-hardware@FreeBSD.ORG
Subject:   Re: dumping really big filesystems to Travan-4 streamer
Message-ID:  <19980524214705.A4676@keltia.freenix.fr>
In-Reply-To: <Pine.BSF.3.96.980524201528.24236K-100000@woozle.rinet.ru>; from Dmitry Morozovsky on Sun, May 24, 1998 at 08:18:55PM %2B0400
References:  <35683536.FA1837DF@tdx.co.uk> <Pine.BSF.3.96.980524201528.24236K-100000@woozle.rinet.ru>

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According to Dmitry Morozovsky:
> 	Well, at least this MAY be useful; however, it's not in my plans to
> turn compression off forever; so, do you (or someone else?) know tape mode
> or SCSI command to turn compression off and on?

There is a mode page that includes compression parameters. On some drives,
you can't change it by software (including my HP 35480A :-().

Try "scsi -f /dev/rsd0.ctl -m 0x10" to see the parameter and add "-P 3 -e"
to edit the save value.
-- 
Ollivier ROBERT -=- FreeBSD: The Power to Serve! -=- roberto@keltia.freenix.fr
FreeBSD keltia.freenix.fr 3.0-CURRENT #60: Fri May 15 21:04:22 CEST 1998

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