From owner-freebsd-arch Tue Dec 21 0:38: 9 1999 Delivered-To: freebsd-arch@freebsd.org Received: from ns1.yes.no (ns1.yes.no [195.204.136.10]) by hub.freebsd.org (Postfix) with ESMTP id 9C1A514F7D for ; Tue, 21 Dec 1999 00:38:06 -0800 (PST) (envelope-from eivind@bitbox.follo.net) Received: from bitbox.follo.net (bitbox.follo.net [195.204.143.218]) by ns1.yes.no (8.9.3/8.9.3) with ESMTP id JAA08046 for ; Tue, 21 Dec 1999 09:38:05 +0100 (CET) Received: (from eivind@localhost) by bitbox.follo.net (8.8.8/8.8.6) id JAA24692 for freebsd-arch@freebsd.org; Tue, 21 Dec 1999 09:38:05 +0100 (MET) Received: from feral.com (feral.com [192.67.166.1]) by hub.freebsd.org (Postfix) with ESMTP id D018A15392 for ; Tue, 21 Dec 1999 00:37:57 -0800 (PST) (envelope-from mjacob@feral.com) Received: from beppo.feral.com (beppo [192.67.166.79]) by feral.com (8.9.3/8.9.3) with ESMTP id AAA14996; Tue, 21 Dec 1999 00:39:41 -0800 Date: Tue, 21 Dec 1999 00:39:41 -0800 (PST) From: Matthew Jacob Reply-To: mjacob@feral.com To: Bob Bishop Cc: "Rodney W. Grimes" , freebsd-arch@freebsd.org, Stephen McKay , Greg Lehey , Thomas David Rivers , Joerg Wunsch , Hauke Fath Subject: Re: filemarks? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG [ sorry, I'm tired- let me restate this ]: > > EARLY WARNING is actually configurable for most SCSI drives. If you don't > get EARLY WARNING (which is the EOM bit in sense data) associated with a > plain old UNIT ATTENCTION sense key, you'll get a VOLUME OVERFLOW sense > key (hard EOT). As far as I know you usually don't get EARLY WARNING > detection on reads for these drives- this only happens on writes- I don't > have my specs handy or I'd go back and make sure of this. This should read: EARLY WARNING is actually configurable for most SCSI drives. If you don't get EARLY WARNING (which is the EOM bit in sense data) associated with a plain old UNIT ATTENCTION sense key, you'll *still* get a VOLUME OVERFLOW sense key when you hit hard EOT. As far as I know you usually don't get EARLY WARNINGdetection on reads for these drives- this only happens on writes- I don't have my specs handy or I'd go back and make sure of this. > > The way I was specifying this is that subsequent reads aren't confused by > this at all. If you miss EARLY WARNING (say the drive isn't strapped for > it), you get VOLUME OVERFLOW (hard EOT) anyway on writes. > > -matt > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-arch" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message