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Date:      Thu, 16 Mar 2000 16:01:15 -0800
From:      Greg Lehey <grog@lemis.com>
To:        Dan Langille <dan@freebsddiary.org>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: vinum and "recovered error"
Message-ID:  <20000316160115.F2841@mojave.worldwide.lemis.com>
In-Reply-To: <200003150418.RAA50630@ducky.nz.freebsd.org>; from dan@freebsddiary.org on Wed, Mar 15, 2000 at 05:18:36PM %2B1300
References:  <200003131821.HAA40076@ducky.nz.freebsd.org>; <20000313214753.B475@mojave.worldwide.lemis.com> <200003150418.RAA50630@ducky.nz.freebsd.org>

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On Wednesday, 15 March 2000 at 17:18:36 +1300, Dan Langille wrote:
> On 13 Mar 00, at 21:47, Greg Lehey wrote:
>
>> On Tuesday, 14 March 2000 at  7:21:46 +1300, Dan Langille wrote:
>>> Hi folks,
>>>
>>> This morning I found the following in my logs:
>>>
>>> Mar 14 00:27:42 fred /kernel: (da2:ncr0:0:4:0): READ(06). CDB: 8 18 2a 99
>>> 70 0 Mar 14 00:27:43 fred /kernel: (da2:ncr0:0:4:0): RECOVERED ERROR
>>> info:182ae9 asc:17,1 Mar 14 00:27:43 fred /kernel: (da2:ncr0:0:4:0):
>>> Recovered data with retries sks:80,1
>>>
>>> Mar 14 01:06:16 fred /kernel: (da1:ncr0:0:2:0): READ(06). CDB: 8 4 14 a9
>>> 48 0 Mar 14 01:06:16 fred /kernel: (da1:ncr0:0:2:0): RECOVERED ERROR
>>> info:414b0 asc:17,1 Mar 14 01:06:16 fred /kernel: (da1:ncr0:0:2:0):
>>> Recovered data with retries sks:80,3
>>>
>>> da2 is the second of a two disks which are used by vinum.  Should
>>> I be worried about the above messages?
>>
>> Yes, there's cause for concern, but not because of Vinum.  You should
>> check whether you have ARRE and AWRE set on the drive.  If not, your
>> disk may be on the way out.
>
> And if they are set?  See below.

Oops, sorry, that should have read:

  If they are, your disk may be on the way out.

>> Here's information about ARRE and AWRE from "The Complete FreeBSD":
>
> [partial snip]
>
>>  # camcontrol modepage da1 -m 1 -e -P 3
>
> Here are my settings:
>
> AWRE (Auto Write Reallocation Enbld):  1
> ARRE (Auto Read Reallocation Enbld):  1
>
> I notice some values missing from your example.  The above is an old
> 1G SCSI drive.  Would that explain the missing options?  

Yes.

> Given that both AWRE and ARRE are 1, what action should I take now?

Looks like it's time to look for a new disk.  You could try
reformatting it.  This is one of the very few times where a low-level
format has any likelihood of success, and even now it's not much.

> As a side note, both vinum drives (da1 and da2) had AWRE and ARRE
> set.  da0 didn't but now has these values set.

OK.  It's good to set them.

Greg
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