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Date:      Thu, 24 Oct 1996 13:41:39 -0700
From:      David Greenman <>
Cc:        Bill Fenner <>,
Subject:   Re: Is my disk going bad? 
Message-ID:  <>
In-Reply-To: Your message of "Thu, 24 Oct 1996 13:23:12 PDT." <> 

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>On Thu, 24 Oct 1996, Bill Fenner wrote:
>> I just noticed that I've been getting these for a while:
>>  sd1(ncr0:1:0): MEDIUM ERROR info:119a05 csi:6,a8,3,41 asc:11,43  field replaceable unit: 15 sks:80,40
>> sd1 is a Quantum 1080S.  I don't have the probe messages since the
>> medium error messages have scrolled them away.
>> I just yesterday turned on remapping:
>> % scsi -f /dev/rsd1 -m 1
>> AWRE (Auto Write Reallocation Enbld):  1 
>> ARRE (Auto Read Reallocation Enbld):  1 
>> but it's not remapping, it's still returning errors.
>> Is this the disk going so bad that it can't reallocate to good blocks?
>How full is it?  Once you've filled the disk then it can't reallocate
>those bad sectors anywhere else.

   Uhh, gurp. Drives reserve spare tracks and blocks for use in reallocation.
The space does not come from the filesystem free block pool.


David Greenman
Core-team/Principal Architect, The FreeBSD Project

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