From owner-freebsd-stable Sat Aug 14 12: 2: 2 1999 Delivered-To: freebsd-stable@freebsd.org Received: from alice.gba.oz.au (gba-254.tmx.com.au [203.9.155.254]) by hub.freebsd.org (Postfix) with SMTP id 095F414BEC for ; Sat, 14 Aug 1999 12:01:54 -0700 (PDT) (envelope-from gjb-freebsd@gba.oz.au) Received: (qmail 21043 invoked by uid 1001); 14 Aug 1999 20:39:11 +1000 Message-ID: <19990814103911.21042.qmail@alice.gba.oz.au> X-Posted-By: GBA-Post 1.03 20-Sep-1998 X-PGP-Fingerprint: 5A91 6942 8CEA 9DAB B95B C249 1CE1 493B 2B5A CE30 Date: Sat, 14 Aug 1999 20:39:10 +1000 From: Greg Black To: Mike Meyer Cc: stable@FreeBSD.ORG Subject: Re: Random disk read problems References: In-reply-to: of Fri, 13 Aug 1999 22:28:56 MST Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Mike Meyer writes: > I've been shuffling some data around in preperation for archiving > it. Being a bit paranoid, I tend to md5 sum the stuff at both ends, > and then verify the checksums. > > I'm getting random differences. I.e. - the diff of the md5 sums will > turn up a file or two that are different. Running diff or cmp on them > by hand - and they're the same. Likewise, running md5 on them by hand > turns up correct sums. > > This worries me. I'm running an older version of 3.2-stable on a > SuperMicro motherboard with 256Meg of ram and a Seagate ST39173W SCSI > drive. Is this something that udpating the OS might fix, or am I > seeing evidence of hardware problems (but I'm not seeing anything in > syslog!), or possibly bugs in both diff and md5? It's a near certainty that you have bad memory. -- Greg Black -- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message