From owner-freebsd-stable Fri Sep 7 15:45:40 2001 Delivered-To: freebsd-stable@freebsd.org Received: from pc1-cove4-0-cust214.bir.cable.ntl.com (pc1-cove4-0-cust214.bir.cable.ntl.com [213.105.93.214]) by hub.freebsd.org (Postfix) with ESMTP id 2986C37B403 for ; Fri, 7 Sep 2001 15:45:37 -0700 (PDT) Received: from ntlworld.com (alpha.private [192.168.0.2]) (authenticated) by pc1-cove4-0-cust214.bir.cable.ntl.com (8.11.3/8.11.3) with ESMTP id f87MjS404009 (using TLSv1/SSLv3 with cipher RC4-MD5 (128 bits) verified NO); Fri, 7 Sep 2001 23:45:32 +0100 (BST) (envelope-from ianjhart@ntlworld.com) Message-ID: <3B994E08.FF3BE9C4@ntlworld.com> Date: Fri, 07 Sep 2001 23:45:28 +0100 From: ian j hart X-Mailer: Mozilla 4.78 [en] (X11; U; Linux 2.2.12 i386) X-Accept-Language: en MIME-Version: 1.0 To: Dave Uhring Cc: Randall Hopper , stable@FreeBSD.ORG Subject: Re: UDMA ICRC error reading fsb (?) References: <20010906204356.A4116@nc.rr.com> <20010907180403.A1472@nc.rr.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Dave Uhring wrote: > > On Friday 07 September 2001 17:04, Randall Hopper wrote: > > Dave Uhring: > > |On Thursday 06 September 2001 07:43 pm, Randall Hopper wrote: > > |> What do these messages mean? Are CRCs done by the IDE > > |> controller on DMA transfers and they're coming up wrong? > > |> > > |> ad0s2a: UDMA ICRC error writing fsbn 3283483 of 396704-396713 > > |> (ad0s2 bn 3283483; cn 204 tn 98 sn 49) retrying > > | > > |Your drive is dying. Back it up and replace it. I think you are being a tad premature. There have been plenty of posts on this subject, both on stable and hardware. IIRC none of them were bad disks. Randall, 1) post a copy of dmesg so we can see what hardware you have. 2) measure the cable - M/B to drive. > > > > Ok, thanks. But what do these messages "mean" on a technical level? > > > > And could these just as well indicate a marginal cable, bad > > connector, loose connector, or the other hard drive on the controller > > being a bit flakey? > > > > Randall > > CRC's (16 bit cyclic redundancy check characters) have been done on > controllers since we had to use floppies. The first Winchester drive > interface I ever designed back in 1979 had a Fairchild 9401 (IIRC) CRC > generator chip on it. The writes are failing. You "may" have marginal > cabling or loose or corroded connectors. > > If you wish to keep using the drive, replace the cable and in doing so > your contacts will also wipe clean. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-stable" in the body of the message -- ian j hart To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message