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Date:      Thu, 22 Apr 2010 13:08:50 -0700
From:      Maxim Sobolev <sobomax@FreeBSD.org>
To:        Richard Tector <richardtector@thekeelecentre.com>
Cc:        Alexander Motin <mav@FreeBSD.org>, FreeBSD-Current <freebsd-current@FreeBSD.org>, freebsd-geom@FreeBSD.org
Subject:   Re: Switchover to CAM ATA?
Message-ID:  <4BD0ACD2.3040805@FreeBSD.org>
In-Reply-To: <4BD0A689.8000508@thekeelecentre.com>
References:  <4BD06BD9.6030401@FreeBSD.org> <4BD099E6.6000402@FreeBSD.org> <4BD0A689.8000508@thekeelecentre.com>

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Richard Tector wrote:
> On 22/04/2010 19:48, Maxim Sobolev wrote:
>> Alexander Motin wrote:
>>> So what is the public opinion: Is the lack of ataraid(4) fatal or we can
>>> live without it?
>>
>> I believe it's fatal in long run. This would present significant 
>> challenge for users who rely on this functionality from upgrading from 
>> 8.x to 9.0 later on. Especially for ones using striped disks and RAID5.
>>
>> Therefore while it's no problem to have it in HEAD for now, but it 
>> will have to be addressed before the release.
> 
> Could I also add that the removal of ataraid would affect those users 
> who dual-boot with Windows and rely on the psuedo-raid provided by most 
> Intel chipsets to be able to share the same pair of disks.

Well, this won't be a problem if we have GEOM classes that can 
understand metadata created by the ATA RAID BIOS(es). But we don't those 
classes at the moment.

-Maxim



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