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Date:      Sun, 24 Apr 2011 19:38:07 +0300
From:      Alexander Motin <mav@FreeBSD.org>
To:        Andrey Chernov <ache@freebsd.org>, src-committers@FreeBSD.ORG,  svn-src-all@FreeBSD.ORG, svn-src-head@FreeBSD.ORG
Subject:   Re: svn commit: r220983 - head
Message-ID:  <4DB451EF.8090301@FreeBSD.org>
In-Reply-To: <20110424161933.GA18775@vniz.net>
References:  <201104240923.p3O9N8QG025386@svn.freebsd.org> <20110424161933.GA18775@vniz.net>

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On 24.04.2011 19:19, Andrey Chernov wrote:
> On Sun, Apr 24, 2011 at 09:23:08AM +0000, Alexander Motin wrote:
>>   	ATA device names in /etc/fstab or other places, make sure to update
>>   	them respectively (adX ->  adaY, acdX ->  cdY, afdX ->  daY, astX ->  saY,
>> -	where 'Y's are the sequential numbers for each type in order of
>> -	detection, unless configured otherwise with tunables, see cam(4)).
>> +	where 'Y's are the sequential numbers starting from zero for each type
>> +	in order of detection, unless configured otherwise with tunables,
>> +	see cam(4)).
>
> Is there any way to guess resulting 'Y' numbers _before_ booting new
> kernel? I have remote machine with console access almost impossible (very
> hard for me).

In most cases order of adaX devices should match order of ad devices, so 
first adX will become ada0, second - ada1, etc. The only exception there 
should be devices on ATA channels in legacy/ISA emulation mode: ata0 
(ad0/ad1) and ata1 (ad2/ad3). Old ATA always allocated these devices 
first, but new ATA will allocate them as any other in order of their 
channels registration. That order you can see in dmesg.

-- 
Alexander Motin



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