From owner-cvs-all Fri Jul 6 0:23:19 2001 Delivered-To: cvs-all@freebsd.org Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.86.163]) by hub.freebsd.org (Postfix) with ESMTP id AC7EA37B405; Fri, 6 Jul 2001 00:23:13 -0700 (PDT) (envelope-from phk@critter.freebsd.dk) Received: from critter (localhost [127.0.0.1]) by critter.freebsd.dk (8.11.3/8.11.3) with ESMTP id f667N5n15616; Fri, 6 Jul 2001 09:23:05 +0200 (CEST) (envelope-from phk@critter.freebsd.dk) To: Peter Wemm Cc: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/etc diskcheckd.conf In-Reply-To: Your message of "Fri, 06 Jul 2001 00:09:05 PDT." <20010706070905.7BC4D3809@overcee.netplex.com.au> Date: Fri, 06 Jul 2001 09:23:05 +0200 Message-ID: <15614.994404185@critter> From: Poul-Henning Kamp Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG In message <20010706070905.7BC4D3809@overcee.netplex.com.au>, Peter Wemm writes : >In relatively rare cases drives start going marginal and retries do >sometimes work if you retry enough. Overheating is a good cause of this. >These are the vast minority of cases if our 10,000-20,000 drive sample is >any indication. A scrubber is more useful here, but that is a really >black art. diskcheckd wont detect marginal sectors while they are >recoverable - not until it is virtually too late. Peter, I think I will submit to you that your disk use at Y! is probably quite atypical for a lot of people :-) I think that a lot of people will have a good chance of making a practically complete backup if they get early warning that they have bad sectors as opposed to only noticing months later when they try to access /usr/ports/foo/bar/blaf Eitherway, I will argue that we need more real-world experience with diskcheckd before we decide anything. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message