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Date:      Mon, 04 Oct 2010 13:19:11 +0200
From:      Alexander Leidinger <Alexander@Leidinger.net>
To:        Dan Langille <dan@langille.org>
Cc:        freebsd-stable <freebsd-stable@freebsd.org>, Jeremy Chadwick <freebsd@jdc.parodius.com>
Subject:   Re: out of HDD space - zfs degraded
Message-ID:  <20101004131911.6737284xpe0sv23o@webmail.leidinger.net>
In-Reply-To: <4CA87233.2050308@langille.org>
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>

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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.

Bye,
Alexander.

-- 
If your mother knew what you're doing,
she'd probably hang her head and cry.

http://www.Leidinger.net    Alexander @ Leidinger.net: PGP ID = B0063FE7
http://www.FreeBSD.org       netchild @ FreeBSD.org  : PGP ID = 72077137



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