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Date:      Sun, 17 Oct 2010 18:27:51 -0400
From:      Dan Langille <dan@langille.org>
To:        freebsd-stable@freebsd.org
Subject:   Re: out of HDD space - zfs degraded
Message-ID:  <4CBB7867.6020909@langille.org>
In-Reply-To: <20101004131911.6737284xpe0sv23o@webmail.leidinger.net>
References:  <4CA73702.5080203@langille.org>	<20101002141921.GC70283@icarus.home.lan>	<4CA7AD95.9040703@langille.org>	<20101002223626.GB78136@icarus.home.lan>	<4CA7BEE4.9050201@langille.org>	<20101002235024.GA80643@icarus.home.lan>	<4CA7E4AE.4060607@langille.org> <4CA87233.2050308@langille.org> <20101004131911.6737284xpe0sv23o@webmail.leidinger.net>

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On 10/4/2010 7:19 AM, Alexander Leidinger wrote:
> Quoting Dan Langille <dan@langille.org> (from Sun, 03 Oct 2010 08:08:19
> -0400):
>
>> Overnight, the following appeared in /var/log/messages:
>>
>> Oct 2 21:56:46 kraken root: ZFS: checksum mismatch, zpool=storage
>> path=/dev/gpt/disk06-live offset=123103157760 size=1024
>> Oct 2 21:56:47 kraken root: ZFS: checksum mismatch, zpool=storage
>> path=/dev/gpt/disk06-live offset=123103159808 size=1024
>
> [...]
>
>> Given the outage from yesterday when ada0 was offline for several
>> hours, I'm guessing that checksum mismatches on that drive are
>> expected. Yes, /dev/gpt/disk06-live == ada0.
>
> If you have the possibility to run a scrub of the pool, there should be
> no additional checksum errors accouring *after* the scrub is *finished*.
> If checksum errors still appear on this disk after the scrub is
> finished, you should have a look at the hardware (cable/disk) and take
> appropriate replacement actions.

For the record, there have been no further checksum errors.  :)

-- 
Dan Langille - http://langille.org/



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