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Date:      Wed, 15 Mar 2000 17:18:36 +1300
From:      "Dan Langille" <dan@freebsddiary.org>
To:        Greg Lehey <grog@lemis.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: vinum and "recovered error"
Message-ID:  <200003150418.RAA50630@ducky.nz.freebsd.org>
In-Reply-To: <20000313214753.B475@mojave.worldwide.lemis.com>
References:  <200003131821.HAA40076@ducky.nz.freebsd.org>; from dan@freebsddiary.org on Tue, Mar 14, 2000 at 07:21:46AM %2B1300

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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.

> 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
TB (Transfer Block):  0
EER (Enable Early Recovery):  0
PER (Post Error):  1
DTE (Disable Transfer on Error):  0
DCR (Disable Correction):  0
Read Retry Count:  18
Write Retry Count:  18

I notice some values missing from your example.  The above is an old 
1G SCSI drive.  Would that explain the missing options?  The following 
is a list of the missing options:


>  RC (Read Continuous):  0
>  Correction Span:  41
>  Head Offset Count:  0
>  Data Strobe Offset Count:  0
>  Recovery Time Limit:  0

>  The values for AWRE and ARRE should both be 1.  If  they  aren't,  as  in 
>  this case, where AWRE is 0, change the data with the editor, save it, and
>  exit.  The camcontrol program will write the data back to the disk and
>  enable the  option.

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

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

thanks greg.
--
Dan Langille - DVL Software Limited [I'm looking for more work]
http://www.dvl-software.com/ |  http://www.unixathome.org/
http://www.racingsystem.com/ |  http://www.freebsddiary.org/


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