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From: Pete French <petefrench@ticketswitch.com>
Date: Fri, 16 Jan 2009 11:33:47 +0000
Cc: 
Subject: Re: zfs drive keeps failing between export and import
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> a software problem before hardware.  Both drives are encrypted geli
> devices.  I tried to reproduce the error with 1GB disk images (vs

This is probably a silly question, but are you sure that the drives
are not auto detaching ? I had big problems with a zfs mirror on top
of geli which turned out to be that drives mounted using "geli_devices"
in rc.conf will auto detach unless you set "geli_autodetach" to NO.

-pete.