[OpenIndiana-discuss] How do I swiych from IDE to AHCI mode for my SATA disks, please vet my procedure!

[Pablo Oddera]

the motherboard is M3N-HD/HDMI and the disks are old 320 gb Western Digital
(WDCWD3200AAKS)


On Mon, Mar 18, 2013 at 2:59 PM, Hans J Albertsson <
hans.j.albertsson at branneriet.se> wrote:

>
> What motherboard and what disk types were involved?
>
>
>
> Skickat från min Samsung Mobil
>
> -------- Originalmeddelande --------
> Från: Pablo Oddera <pablo.oddera at gmail.com>
> Datum:
> Till: Discussion list for OpenIndiana <openindiana-discuss at openindiana.org
> >
> Rubrik: Re: [OpenIndiana-discuss] How do I swiych from IDE to AHCI mode for
>   my SATA disks, please vet my procedure!
>
> When i did it (and it was long ago), i just changed the
> mode on the motherboard. Nothing else. The existing pools worked out of the
> box. Also it change back (bios reset) and it still work on a IDE mode but
> throwing a lot of errors on the logs. Then change it back and everything
> come back to normal.
>
>
> On Mon, Mar 18, 2013 at 2:14 PM, Hans J. Albertsson <
> hans.j.albertsson at branneriet.se> wrote:
>
> >
> > Status: I have a server with two SATA disks carrying a root pool 2 way
> > mirror.
> >
> > The motherboard is in IDE mode for SATA.
> >
> > This must now change, since I need to be able to accomodate disks of the
> > 512e ilk, i e disks that lie about their blocksize, which really is 4k.
> >
> > I think I should do the following:
> >
> > On the running host, I make sure either disk can be booted, by doing the
> > installgrub things.
> >
> > Then I reboot the machine on a live DVD. On the way up, I set the Bios to
> > use AHCI mode for the SATA disks, and boot the Live DVD.
> >
> > From the live cd I do, I hope this is correct! Please vet!
> >
> >
> > -------
> > zpool import -f rpool
> >
> > ( The -f is because I didn't export it on the running system, because I
> > couldn't, but I know it isn't active, I'm running off a DVD, see. But how
> > does "zpool" find rpool???)
> >
> > touch /a
> >
> > zfs set -o canmount=on,mountpoint=/a root/ROOT/OI-151a7
> >
> > zfs mount rpool/ROOT/OI-151a7
> >
> > devfsadm -r /a -Cv
> >
> > bootadm update-archive -R /a
> >
> > zpool export rpool
> >
> > reboot
> > --------
> >
> >
> >
> > After the reboot, if everything is OK I'm fine, but what can I do to
> > recover in IDE mode if all this breaks for some dumb mistake or error??
> >
> > I'd like to ensure that disk number two remains unchanged until I know
> > AHCI mode works, so that I can either attach and resilver disk 2 if all
> is
> > OK or else reboot the Live DVD and recreate the IDE rpool from disk  2.
> >
> > An alternative to devfsadm would be to erase the dev and devices trees
> > embedded in the rpool and copy the Live DVD /dev and /devices in.
> >
> > And I suppose a new installgrub would have to be performed somewhere
> after
> > the dev/devices revamp and and before the bootadm
> >
> >
> >
> >
> >
> >
> >
> >
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> >
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