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Date:      Mon, 08 Dec 2014 16:00:53 +0000
From:      Steven Hartland <killing@multiplay.co.uk>
To:        freebsd-fs@freebsd.org
Subject:   Re: ZFS scrub on new disks gives cksum errors
Message-ID:  <5485CB35.5010608@multiplay.co.uk>
In-Reply-To: <20141208155230.GA574@iozz.us>
References:  <20141208155230.GA574@iozz.us>

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Bad memory, cabling?

On 08/12/2014 15:53, Brian N wrote:
> Hi.
>
> I have two new 3TB disks that I'm testing prior to installing in a production
> server.  I created a zpool mirror, dumped a bunch of data to the pool and ran a
> scrub.  I got back numerous CKSUM errors, the same number on each drive.  I'm
> guessing this is not a problem with my 3TB drives but a controller or some
> other hardware problem.  Is this a correct assumption?
>
> The PC where I'm running this test is using a GA-E7AUM-DS2H mainboard and
> non-ecc memory.
>
> ######
>
> root@server:~ # zpool status
>    pool: tank
>   state: ONLINE
> status: One or more devices has experienced an error resulting in data
>          corruption.  Applications may be affected.
> action: Restore the file in question if possible.  Otherwise restore the
>          entire pool from backup.
>     see: http://illumos.org/msg/ZFS-8000-8A
>    scan: scrub repaired 0 in 3h57m with 23 errors on Mon Dec  8 03:05:28 2014
> config:
>
>          NAME        STATE     READ WRITE CKSUM
>          tank        ONLINE       0     0    23
>            mirror-0  ONLINE       0     0    46
>              ada1    ONLINE       0     0    46
>              ada3    ONLINE       0     0    46
>
> errors: 2 data errors, use '-v' for a list
>
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