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Date:      Fri, 04 Dec 2009 09:04:25 -0600
From:      Rob <lists@midsummerdream.org>
To:        Steve Polyack <korvus@comcast.net>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: FreeBSD 8.0 not detecting hot swap drive insertion
Message-ID:  <4B1924F9.4060409@midsummerdream.org>
In-Reply-To: <4B19218E.70909@comcast.net>
References:  <4B191E92.7010007@midsummerdream.org> <4B19218E.70909@comcast.net>

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I don't have any /dev/ada* devices, so I assume I'm using the original 
ata driver.  I haven't done any kernel customization, and am running the 
distribution's kernel (upgraded with the freebsd-update tool).  Does the 
older driver no longer detect drive insertion?

Rob

Steve Polyack wrote:
> Rob wrote:
>> I'm running a 10 hot-swap SATA disk ZFS pool and recently upgraded 
>> from 7.2 to 8.  Since I upgraded, freebsd isn't spinning up or 
>> recognizing a new drive that is inserted.  In freebsd 7.[0,2], I could 
>> remove a drive and insert a new one and freebsd would recognize it, 
>> spin it up, and create the device nodes.  None of that is happening in 
>> 8.0, and the only way I've found to get it to recognize the disk is to 
>> reboot the system.
>>
>> I tried using atacontrol to force freebsd to reinit an ata channel, 
>> but that didn't have any effect.  Did something change in 8.0 that 
>> prevents this auto-detection?  Is there a way to re-enable it?
>>
> Are you using the original (7.x) ata(4) driver or the newer enhanced 
> SATA drivers like ahci(4) or siis(4)?  If you're using the latter your 
> devices will be labeled /dev/ada* instead of /dev/ad*.  If you are 
> indeed using the newer enhanced SATA drivers, you will need to use 
> camcontrol to reset and rescan the associated SATA channels.
> 
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