From owner-freebsd-scsi Sun Oct 5 13:47:02 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id NAA08515 for freebsd-scsi-outgoing; Sun, 5 Oct 1997 13:47:02 -0700 (PDT) Received: from firewall.ftf.dk (root@mail.ftf.dk [129.142.64.2]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id NAA08492; Sun, 5 Oct 1997 13:46:54 -0700 (PDT) Received: from mail.prosa.dk ([192.168.100.2]) by firewall.ftf.dk (8.7.6/8.7.3) with ESMTP id XAA03723; Sun, 5 Oct 1997 23:17:25 +0200 Received: from deepo.prosa.dk (deepo.prosa.dk [192.168.100.10]) by mail.prosa.dk (8.8.5/8.8.5/prosa-1.1) with ESMTP id WAA21379; Sun, 5 Oct 1997 22:58:50 +0200 (CEST) Received: (from regnauld@localhost) by deepo.prosa.dk (8.8.5/8.8.5/prosa-1.1) id WAA03779; Sun, 5 Oct 1997 22:45:54 +0200 (CEST) Message-ID: <19971005224554.62507@deepo.prosa.dk> Date: Sun, 5 Oct 1997 22:45:54 +0200 From: Philippe Regnauld To: Chuck Cc: freebsd-isp@freebsd.org, freebsd-scsi@freebsd.org Subject: Re: Tape Backup References: <199710052037.QAA00299@daisy.capecod.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Description: Main Body X-Mailer: Mutt 0.69 In-Reply-To: <199710052037.QAA00299@daisy.capecod.net>; from Chuck on Sun, Oct 05, 1997 at 04:37:19PM -0400 X-Operating-System: FreeBSD 2.2.1-RELEASE i386 Sender: owner-freebsd-scsi@freebsd.org X-Loop: FreeBSD.org Precedence: bulk [Cc:ed to freebsd-scsi] Chuck writes: > > Khanh Nguyen writes: > > > Does FBSD-2.2.2-REL support Hewlett Packard Colorado T3000 tape > > > backup devices? If so, has anyone configured the kernel to use this? And > > > if yes, can you send me the copy of the kernel config? > > > We're talking about the Travan SCSI HP/Colorado, right ? > > There was some talk about this drive some time ago, and IIRC, > > it has a problem with tape locking or something like it (i.e.: > > the Travan doesn't support it, and any operations to access the > > drive fail miserably). Last time I checked the archives, no > > no patch is available. Maybe check the Linux code (don't know > > if they support it). > > Alas, as I found out, non-SCSI tapes of all stripes remain unsupported > under FreeBSD-2.2.2 :-( So I forked over 3 bills and bought a TR-4, > installed it as /dev/st0, and bingo, it goes like a champ, around > 500KB/second! I thought the T3000 was scsi (travan). What tape format does the TR-4 use ? > Alas, over an ethernet from another FreeBSD 2.2.2 system using dump, > it hiccuped continuously, getting just about 50KB/second. > Is there any fix for that, like perhaps a humongous buffer? I figured, > since the average data rate was 50KB/sec., and the hiccups averaged > 4 seconds, I was buffering about 200KB. Can I buffer say, 10MB? I expereienced the same problem with an old DAT drive and remote dump -- 50K/sec where I usualy get 200. This with a 2.2.1 laptop dumping to a -current machine. -- -- Phil -[ Philippe Regnauld / Systems Administrator / regnauld@deepo.prosa.dk ]- -[ Location.: +55.4N +11.3E PGP Key: finger regnauld@hotel.prosa.dk ]-