Re: Infinite retries reading the partition table

[James Bottomley <James.Bottomley@SteelEye.com>]

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