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From: Colin McCabe <Colin.P.McCabe@gmail.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: unreadable drives can be synchronized?
Date: Fri, 18 May 2007 14:10:50 -0400	[thread overview]
Message-ID: <464DEC2A.6040209@gmail.com> (raw)
In-Reply-To: <200705181447.l4IElO2a000640@cichlid.com>

Andrew Burgess wrote:
>> Basically, B appears to be "write-only"; it will never return an error on a
>> write, but just try to read from it, and you will be sorry.
> 
> It would be interesting to see what SMART says about drive B, especially
> the short and long self tests.
> 
> -
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On my hard drives, automatic online testing is turned on, and so is 
automatic offline testing. I run the long self-test once a week.

I have two drives which can play the role of B. One of them has this 
SMART output:

[root@cmccabe-devel root]# smartctl -d ata /dev/sdb -H
smartctl version 5.36 [i686-pc-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: FAILED!
Drive failure expected in less than 24 hours. SAVE ALL DATA.
Failed Attributes:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE 
UPDATED  WHEN_FAILED RAW_VALUE
   5 Reallocated_Sector_Ct   0x0033   004   004   024    Pre-fail 
Always   FAILING_NOW 133273031255

The other one passes SMART.
Both of them eat data, though.

Colin


  parent reply	other threads:[~2007-05-18 18:10 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-18 14:47 unreadable drives can be synchronized? Andrew Burgess
2007-05-18 15:04 ` Tomasz Chmielewski
2007-05-18 18:18   ` Colin McCabe
2007-05-23 17:46     ` Bill Davidsen
2007-05-18 18:10 ` Colin McCabe [this message]
  -- strict thread matches above, loose matches on Subject: below --
2007-05-16 15:50 Colin McCabe
2007-05-16 17:22 ` Bill Davidsen
2007-05-16 20:09   ` Colin McCabe
2007-05-16 20:18     ` Colin McCabe
2007-05-17  0:54 ` Neil Brown

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