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From: James Bottomley <James.Bottomley@SteelEye.com>
To: Andrew Morton <akpm@osdl.org>
Cc: ltuikov@yahoo.com, mdr@sgi.com, linux-scsi@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: Infinite retries reading the partition table
Date: Wed, 06 Dec 2006 09:59:47 -0600	[thread overview]
Message-ID: <1165420788.2810.13.camel@mulgrave.il.steeleye.com> (raw)
In-Reply-To: <20061205210853.e2661207.akpm@osdl.org>

On Tue, 2006-12-05 at 21:08 -0800, Andrew Morton wrote:
>  	case MEDIUM_ERROR:
> +		if (sshdr.asc == 0x11 || /* UNRECOVERED READ ERR */
> +		    sshdr.asc == 0x13 || /* AMNF DATA FIELD */
> +		    sshdr.asc == 0x14) { /* RECORD NOT FOUND */
> +			return SUCCESS;
> +		}
>  		return NEEDS_RETRY;

If the complaint is true; i.e. infinite retries, this is just a bandaid
not a fix.  What it's doing is marking the unrecoverable medium errors
for no retry.  However, what we really need to know is why NEEDS_RETRY
isn't terminating after its allotted number of retries.  Can we please
have a trace of this?
 
> -	if (scsi_end_request(cmd, 1, good_bytes, result == 0) == NULL)
> +	if (good_bytes &&
> +	    scsi_end_request(cmd, 1, good_bytes, result == 0) == NULL)
>  		return;

What exactly is this supposed to be doing?  its result is identical to
the code it's replacing (because of the way scsi_end_request() processes
its second argument), so it can't have any effect on the stated problem.

James



  parent reply	other threads:[~2006-12-06 16:00 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-30  1:22 Luben Tuikov
2006-12-01  5:47 ` Andrew Morton
2006-12-01  6:34   ` Luben Tuikov
2006-12-01  7:29     ` Andrew Morton
2006-12-01  8:32       ` Luben Tuikov
2006-12-05 20:40         ` Michael Reed
2006-12-06  5:00           ` Luben Tuikov
2006-12-06  5:08             ` Andrew Morton
2006-12-06  6:10               ` Luben Tuikov
2006-12-06 15:59               ` James Bottomley [this message]
2006-12-06 20:24                 ` Luben Tuikov
2006-12-07 18:16                   ` James Bottomley
2006-12-07 19:14                     ` Luben Tuikov
2006-12-07 21:15                       ` James Bottomley
2006-12-06 10:48       ` Etienne.Vogt
2006-11-30  1:53 Luben Tuikov

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