On Tue, Jul 5, 2011 at 9:11 AM, Fajar A. Nugraha <w...@fajar.net> wrote:
> On Tue, Jul 5, 2011 at 8:03 PM, Edward Ned Harvey
> <opensolarisisdeadlongliveopensola...@nedharvey.com> wrote:
>>> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
>>> boun...@opensolaris.org] On Behalf Of Orvar Korvar
>>>
>>> Here is my problem:
>>> I have an 1.5TB disk with OpenSolaris (b134, b151a) using non AHCI.
>>> I then changed to AHCI in BIOS, which results in severe problems: I can
>> not
>>> boot the system.
>>>
>>> I suspect the problem is because I changed to AHCI.
>>
>> This is normal, no matter what OS you have. It's the hardware.
>>
>> If you start using a disk in non-AHCI mode, you must always continue to use
>> it in non-AHCI mode. If you switch, it will make the old data inaccessible.
>
> Really? old data inaccessible?
While I agree that you should not change the controller mode with
data behind it, I did do that on a Supermicro system running OpenSuSE
and Linux LVM mirrors with no issues. I suspect because Linux both
loads the AHCI drivers in the "mini-root" (to use a Sun term :-) and
that the LVM layer uses a private region on disk to identify the
device (much like both SLVM and ZFS).
--
{--------1---------2---------3---------4---------5---------6---------7---------}
Paul Kraus
-> Senior Systems Architect, Garnet River ( http://www.garnetriver.com/ )
-> Sound Coordinator, Schenectady Light Opera Company (
http://www.sloctheater.org/ )
-> Technical Advisor, RPI Players
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