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Date:      Sun, 16 May 2010 16:45:04 -0400
From:      Todd Wasson <tsw5@duke.edu>
To:        Wes Morgan <morganw@chemikals.org>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: zfs drive replacement issues
Message-ID:  <0BE564E4-3B13-41A5-9A38-7D5AE0C983BF@duke.edu>
In-Reply-To: <alpine.BSF.2.00.1005161534120.92195@ibyngvyr>
References:  <0B97967D-1057-4414-BBD4-4F1AA2659A5D@duke.edu> <alpine.BSF.2.00.1005161352240.17439@ibyngvyr> <6FADBEDC-FF47-498A-BB17-0FCC163D3C8C@duke.edu> <alpine.BSF.2.00.1005161534120.92195@ibyngvyr>

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>>> Strange, you should be able to cancel the replacement with detach. There
>>> is some kind of DTL issue preventing it. I don't know what it is
>>> precisely, but there are known cases where legitimate detach operations
>>> are prevented.
>>> 
>>> Try reconnecting the disk you partitioned, leaving the original ad6 still
>>> attached, and you should be able to detach the new one.
>> 
>> The problem with that is that I can't have any more than four SATA
>> devices in my machine.  I'd have to detach one of the other (good)
>> devices in order to do that.  Is that feasible / possible?  I would
>> think at that point I would have only two of the four drives in the pool
>> and it wouldn't function at all, but if that's not the case I can give
>> it a try...
> 
> I wouldn't recommend that. What about attaching it externally, via eSATA
> or USB?

Unfortunately, my machine doesn't support eSATA and I don't have a USB to SATA adapter.  I can pick one up if it'll help me solve this, though, but one related issue: will the device be identified as the device that used to be on ad6 (or ad6s1) once it's attached via another means, like a USB adapter?  I suspect it will (or that I can issue a command to tell the zpool about it, anyway) but I thought I'd double check...


Todd

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