Quoting Dan Langille <d...@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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