From owner-freebsd-scsi Thu Apr 9 08:27:39 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA10179 for freebsd-scsi-outgoing; Thu, 9 Apr 1998 08:27:39 -0700 (PDT) (envelope-from owner-freebsd-scsi@FreeBSD.ORG) Received: from serenity.mcc.ac.uk (serenity.mcc.ac.uk [130.88.200.93]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id IAA10174; Thu, 9 Apr 1998 08:27:36 -0700 (PDT) (envelope-from ip@albatross.mcc.ac.uk) Received: from albatross.mcc.ac.uk [130.88.202.16] by serenity.mcc.ac.uk with esmtp (Exim 1.81 #4) id 0yNJEi-0007m5-00; Thu, 9 Apr 1998 16:27:32 +0100 Received: (from ip@localhost) by albatross.mcc.ac.uk (8.8.8/8.8.4) id QAA09483; Thu, 9 Apr 1998 16:27:32 +0100 (BST) From: Ian Pallfreeman Message-Id: <199804091527.QAA09483@albatross.mcc.ac.uk> Subject: compression on Exabyte 8700LT? To: questions@FreeBSD.ORG, scsi@FreeBSD.ORG Date: Thu, 9 Apr 1998 16:27:31 +0100 (BST) Reply-To: ip@mcc.ac.uk X-Mailer: ELM [version 2.4ME+ PL32 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org I've recently acquired another Exabyte drive, an 8700LT. This drive claims to be able to write 10Gb to a 112m tape in compressed mode, but I'm getting just the 5Gb I'd expect uncompressed. There are no switches other than the SCSI id on the box. The manual tells me to enable compression in software. ``mt -f /dev/rst1 comp 1'' logs the error "select returned an error of 5" to the console and gives me an I/O error from mt(1). How do I permanently enable compression? FreeBSD 3.0-CURRENT #9: Thu Apr 9 16:06:09 BST 1998 ip@lurch:/usr/src/sys/compile/LURCH [...] ahc0: rev 0x00 int a irq 9 on pci0.19.0 ahc0: aic7880 Single Channel, SCSI Id=7, 16/255 SCBs [...] st0 at scbus0 target 4 lun 0 st0: type 1 removable SCSI 2 st0: Sequential-Access density code 0x13, drive empty st1 at scbus0 target 5 lun 0 st1: type 1 removable SCSI 2 st1: Sequential-Access density code 0x0, drive empty TIA, Ian. -- Network Unit, SNOT Team, Manchester Computing, The University, Manchester, UK. mail: ip@mcc.ac.uk | phone: +44-161-275-6006 | fax: +44-161-275-6040 Where once we had dragons to slay, now we just sacrifice chickens. 35,000 users, 622Mb/s networking, and a 486. :-( To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message