From owner-freebsd-hackers Thu May 7 02:55:42 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id CAA18013 for freebsd-hackers-outgoing; Thu, 7 May 1998 02:55:42 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from caladan.tdx.co.uk (caladan.tdx.co.uk [195.188.177.4]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id CAA18008 for ; Thu, 7 May 1998 02:55:37 -0700 (PDT) (envelope-from kpielorz@caladan.tdx.co.uk) Received: from localhost (kpielorz@localhost) by caladan.tdx.co.uk (8.8.8/8.8.8) with SMTP id KAA10529; Thu, 7 May 1998 10:52:37 +0100 (BST) (envelope-from kpielorz@caladan.tdx.co.uk) Date: Thu, 7 May 1998 10:52:37 +0100 (BST) From: Karl Pielorz To: Terry Lambert cc: Tom , beng@lcs.mit.edu, dec@phoenix.its.rpi.edu, freebsd-hackers@FreeBSD.ORG Subject: Re: dump/restore problem (was: Network problem with 2.2.6-RELEASE) In-Reply-To: <199805070232.TAA19518@usr01.primenet.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > I'm not being a hardass here. Software doesn't mutate, so the problem > should be capable of being isolated. I'm just doing fault isolation via > email, and it's not very efficient. You can say that again ;-) - I've changed the subject line (again) any chance this one will stick more? - I've got a terrible cold at the moment and I'm finding it hard enough to follow all this as-is... ;-) > One possible discrepancy is that my IBM 9G drive is fast SCSI II, not > EIDE. It may be an IDE driver problem. Hoping this helps rule out something... I have 11.5Gb's of EIDE 'storage' (2 x 4.5Gb EIDE's, and 1 x 2.5Gb EIDE) all running off a 440FX chipset controller, and I can back them up and restore them with no problems at all. I'm running the driver in DMA mode - but I've also had it running in standard PIO mode as well (i.e. flags 0x0). I have the same SCSI controller as Tom, i.e. a 2940UW. The only other thing I can think of is that DLT is a damned site faster than DAT - my DAT drive manages about 600k/sec to/from tape, I beleive a DLT is going to run at anything from 1-4Mb/sec, which is going to 'stress' the SCSI / IDE side an awful lot more (and working under the principal one of the best ways to break a system is to 'stress' it) maybe were seeing something like that here? Regards, Karl Pielorz To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message