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Date:      Tue, 18 Jul 2006 09:29:57 -0500
From:      Eric Anderson <anderson@centtech.com>
To:        "R. B. Riddick" <arne_woerner@yahoo.com>
Cc:        freebsd-geom@freebsd.org, Alexandre Biancalana <biancalana@gmail.com>
Subject:   Re: geom_stripe error
Message-ID:  <44BCF065.3080704@centtech.com>
In-Reply-To: <20060718140804.81050.qmail@web30305.mail.mud.yahoo.com>
References:  <20060718140804.81050.qmail@web30305.mail.mud.yahoo.com>

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On 07/18/06 09:08, R. B. Riddick wrote:
> --- Alexandre Biancalana <biancalana@gmail.com> wrote:
>> g_vfs_done():stripe/data[READ(offset=158778490880, length=16384)]error = 6
>>
>>  Any idea on how can I know what disk is causing the problem ??
>>
> Hi!
> 
> According to the offset there are a bunch of read errors (6 might be "device
> not configured") on some disks in gstripe. E.g.:
> 157622337536/131072 appr. 1202563
> 1202563 is congruent with 3 (modulo 32).
> 158778490880/131072 appr. 1211383
> 1211383 % 32 = 23
> (but maybe I dont understand the gstripe algorithm correctly)


So the offset is the number of records (16K based on stripe size in this 
case) offset, and not bytes?  I was thinking bytes, which would make it 
drive number 5:


 > 5. Name: ad0s2f
 >   Mediasize: 35840000000 (33G)
 >   Sectorsize: 512
 >   Mode: r0w0e0
 >   Number: 4.


> I would try it with a different configuration:
> gstripe(4 * 200GB, gconcat(3 * 73GB))
> or
> gconcat(gstripe(4 * 200GB), gstripe(4 * 73GB))
> That should be easier and give u the same or about the same capacity...
> 
> Of course that does not repair the problem, that causes your strange
> panics/reboots...
> 
> I use gstripe with 2 partitions (on ad1s1 and ad0s1) and I dont think, that I
> had a gstripe related panic...
> 
> Bye
> Arne
> 
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-- 
------------------------------------------------------------------------
Eric Anderson        Sr. Systems Administrator        Centaur Technology
Anything that works is better than anything that doesn't.
------------------------------------------------------------------------



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