From owner-freebsd-questions  Fri Oct 16 13:41:33 1998
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Date: Fri, 16 Oct 1998 13:40:44 -0700 (PDT)
From: Doug White <dwhite@resnet.uoregon.edu>
To: Ben Smithurst <ben@scientia.demon.co.uk>
cc: freebsd-questions@FreeBSD.ORG
Subject: Re: wd0 wdunwedge errors
In-Reply-To: <19981015180227.A9191@scientia.demon.co.uk>
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On Thu, 15 Oct 1998, Ben Smithurst wrote:

> I've just spotted a load of errors like this in my logs ...
> 
> Oct 15 08:02:10 scientia /kernel: wd0s3a: wdstart: timeout waiting to give command reading fsbn 10400 of 10400-10527 (wd0s3 bn 10400; cn 2 tn 37 sn 5)wd0: status ff<busy,rdy,wrtflt,seekdone,drq,ecc_cor,index,err> error 0
> Oct 15 08:02:15 scientia /kernel: wd0: wdunwedge failed:
> Oct 15 08:02:15 scientia /kernel: wd0: status ff<busy,rdy,wrtflt,seekdone,drq,ecc_cor,index,err> error ff<badblk,uncorr,id_crc,no_id,abort,tr000,no_dam>
> Oct 15 08:02:15 scientia /kernel: wd0s3a: wdstart: timeout waiting to give command reading fsbn 10400 of 10400-10527 (wd0s3 bn 10400; cn 2 tn 37 sn 5)wd0: status ff<busy,rdy,wrtflt,seekdone,drq,ecc_cor,index,err> error ff<badblk,uncorr,id_crc,no_id,abort,tr000,no_dam>
> 
> (this was repeated at least a dozen times (except the first line which
> only occured once), all within 1 second)
> 
> A few questions,
>  - what is `wdunwedge'?

wdunwedge is a function in the IDE controller driver that gets called when
the interface timeouts too much and it needs to try to get the disk
restarted.  If you get this a lot your disk is going south, something is
sitting on IRQ 14 or your cables are going bad.

Doug White                               
Internet:  dwhite@resnet.uoregon.edu    | FreeBSD: The Power to Serve
http://gladstone.uoregon.edu/~dwhite    | www.freebsd.org


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