From owner-freebsd-scsi Wed Jul 25 21:37:31 2001 Delivered-To: freebsd-scsi@freebsd.org Received: from cage.simianscience.com (cage.simianscience.com [64.7.134.1]) by hub.freebsd.org (Postfix) with ESMTP id 87BA837B401 for ; Wed, 25 Jul 2001 21:37:28 -0700 (PDT) (envelope-from mike@sentex.net) Received: (from root@localhost) by cage.simianscience.com (8.11.4/8.11.2) id f6Q4bRT04280; Thu, 26 Jul 2001 00:37:28 -0400 (EDT) (envelope-from mike@sentex.net) Received: from chimp.sentex.net (fcage [192.168.0.2]) by cage.simianscience.com (8.11.4/8.11.2av) with ESMTP id f6Q4bNG04272; Thu, 26 Jul 2001 00:37:23 -0400 (EDT) (envelope-from mike@sentex.net) Message-Id: <5.1.0.14.0.20010726003110.040a0b30@192.168.0.12> X-Sender: mdtancsa@192.168.0.12 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Thu, 26 Jul 2001 00:37:22 -0400 To: From: Mike Tancsa Subject: Re: SCSI timeout problems going from May23 to July13 kernel Cc: In-Reply-To: <20010725212049.R35492-100000@wonky.feral.com> References: <6f6vlt0lki9dt4bgujmr8por8pgsqrebk4@4ax.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Virus-Scanned: by AMaViS perl-10 Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org At 09:22 PM 7/25/2001 -0700, Matthew Jacob wrote: >Huh. I'm beginning to think that the "test read" that's done at samount time >is more trouble than it is worth. I do it try and pick up density of inserted >tape- a lot of drives won't tell you anything interesting until you access the >tape. But in some cases it sends the drive/tape into the weeds. Grumble. I was trying to remember if we ever used new DDS3 tapes in this DDS4 drive prior to this incident. I am pretty sure they were all used tapes so that there was already info on them which I guess helped the drive figure out what it had ? We only started using the the blank DDS3 tapes recently as we found an unopened box that had been misplaced. So its likely we just never hit this problem before since we got this particular drive 4 months ago. I would say a quick note in either mt or sa man pages. To me, telling the drive the density where needed on blank tapes is an acceptable procedure. It only seems to happen when changing densities. ---Mike To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message