Date: Fri, 17 Sep 2010 18:20:35 +0400 From: "Marat N.Afanasyev" <amarat@ksu.ru> To: Michael Sperber <sperber@deinprogramm.de> Cc: freebsd-stable@freebsd.org Subject: Re: How to predict drive number change for 7.3->8.1 upgrade? Message-ID: <4C937933.4060707@ksu.ru> In-Reply-To: <y9liq247asc.fsf@deinprogramm.de> References: <201009171238.o8HCcwCl084727@lurza.secnetix.de> <y9lr5gs7cjh.fsf@deinprogramm.de> <4C93674B.20300@ksu.ru> <y9liq247asc.fsf@deinprogramm.de>
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This is a cryptographically signed message in MIME format. --------------ms080004020109060702010503 Content-Type: text/plain; charset=KOI8-R; format=flowed Content-Transfer-Encoding: quoted-printable Michael Sperber wrote: > > "Marat N.Afanasyev"<amarat@ksu.ru> writes: > >> Michael Sperber wrote: >>> >>> Oliver Fromme<olli@lurza.secnetix.de> writes: >>> >>>> Michael Sperber<sperber@deinprogramm.de> wrote: >>>> > I just upgraded my desktop system from 7.3 to 8.1, and the ma= in hard >>>> > drive, which was /dev/ad6 before is now /dev/ad10. Consequen= tly, the >>>> > initial boot failed when trying to mount the root file system= from ad6. >>>> > >>>> > The desktop system is now fixed, but I also have a rented ser= ver with >>>> > only a serial console, and I worry that the upgrade is going = to leave me >>>> > with a dead machine. Is there any way to predict how the dri= ve number >>>> > changes? (Why does it change at all?) If so, what's the pro= per way to >>>> > tell the system the initial root device *before* rebooting? >>>> >>>> Remove "options ATA_STATIC_ID" from your kernel config >>>> before building the new kernel and rebooting. Then your >>>> first disk will be ad0, no matter what controller and >>>> channel it is connected to. Be sure to update your >>>> /etc/fstab file. >>> >>> Ah, excellent - that's what I was looking for. Thanks! >>> >> beware of drago^Wchanging of adX numbers each time you add/remove >> drive ;) It's better to label filesystems, imho ;) > > This is a rented server, so I no drive will ever be removed or added. > On the other hand, if I understand it correctly, I'll need to unmount > the root partition in order to label it - right? > you may try the following commands: sysctl kern.geom.debugflags=3D16 foreach fs (your-filesystems) glabel label your-$fs-label your-$fs-device end echo geom_label_load=3D"YES" >> /boot/loader.conf reboot and see if the labels appear in /dev/label --=20 SY, Marat --------------ms080004020109060702010503--
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