Date: Tue, 16 Jun 1998 23:41:17 +0200 From: Stefan Esser <se@FreeBSD.ORG> To: Sean Eric Fagan <sef@kithrup.com>, stable@FreeBSD.ORG Cc: Stefan Esser <se@FreeBSD.ORG> Subject: Re: Worrisome scsi messages Message-ID: <19980616234117.00597@mi.uni-koeln.de> In-Reply-To: <199806161552.IAA02165@kithrup.com>; from Sean Eric Fagan on Tue, Jun 16, 1998 at 08:52:25AM -0700 References: <199806161552.IAA02165@kithrup.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 1998-06-16 08:52 -0700, Sean Eric Fagan <sef@kithrup.com> wrote: > After a powerfailure, I started getting these messages. I re-power cycled, > and fsck'd all of the filesystems on sd0 (and dd'd the swap area, just to be > safe) while in single user mode, and didn't get any errors, but they're still > happening intermittently. Well, I guess that if you had dd'd the whole disk (e.g. the 'c' partition), then the same error (and possibly more might have been reported ... > Any ideas just how badly I should be worried? There definitely is a unrecoverable read error. But this may still be a soft error (e.g. a write has been interrupted in the middle of a sector and there just is no way the missing data may be reconstructed from the ECC syndrome). It is extremely unlikely, that the surface of your drive was damaged and that the sector in question needs to be remapped. > sd0(ncr0:0:0): MEDIUM ERROR info:0x13b2c9 asc:11,0 Unrecovered read error sks:80,33 > , retries:4 > sd0(ncr0:0:0): MEDIUM ERROR info:0x13b2c9 asc:11,0 Unrecovered read error sks:80,33 > , retries:3 > sd0(ncr0:0:0): MEDIUM ERROR info:0x13b2c9 asc:11,0 Unrecovered read error sks:80,33 > , retries:2 > sd0(ncr0:0:0): MEDIUM ERROR info:0x13b2c9 asc:11,0 Unrecovered read error sks:80,33 > , retries:1 > sd0(ncr0:0:0): MEDIUM ERROR info:0x13b2c9 asc:11,0 Unrecovered read error sks:80,33 > , FAILURE > sd0(ncr0:0:0): MEDIUM ERROR info:0x13b2c9 asc:11,0 Unrecovered read error sks:80,33 > , FAILURE > sd0(ncr0:0:0): MEDIUM ERROR info:0x13b2c9 asc:11,0 Unrecovered read error sks:80,33 > , FAILURE > sd0(ncr0:0:0): MEDIUM ERROR info:0x13b2c9 asc:11,0 Unrecovered read error sks:80,33 > , FAILURE It's always the same sector that can't be read. You should backup this disk, and if it was mine, then I'd just dd /dev/zero all over it, recreate the filesystems and try to restore the old contents from the backup. You will loose a single file (the one that contained the read error), but that should be it ... Regards, STefan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19980616234117.00597>