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Date: Mon, 22 Nov 2004 21:45:53 -0600
From: Dan Nelson <dnelson@allantgroup.com>
To: "Ryan J. Cavicchioni" <ryan@confabulator.net>
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Subject: Re: SCSI Hard drive "MEDIUM ERROR"
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In the last episode (Nov 22), Ryan J. Cavicchioni said:
> AWRE (Auto Write Reallocation Enbld):  1
> ARRE (Auto Read Reallocation Enbld):  1
> TB (Transfer Block):  0
> RC (Read Continuous):  0
> EER (Enable Early Recovery):  0
> PER (Post Error):  0
> DTE (Disable Transfer on Error):  0
> Read Retry Count:  255
> Write Retry Count:  255
> 
> It seems to be enabled. Is there anything else that I can do?

ARRE only works if the data is recoverable, and AWRE only works on
writes, so if the bad block has already been assigned to a file, it's
difficult to fix unless you know the filename.  You can try doing a
"tar xvfl /dev/null /mountpoint" and see where it stops, then dd
/dev/zero onto the file to force a write. Another way is to get the
drive to check all the blocks on the disk by running a Verify operation
from your SCSI BIOS.

-- 
	Dan Nelson
	dnelson@allantgroup.com