Date: Tue, 5 Jul 2011 20:25:38 -0700 From: Kurt Buff <kurt.buff@gmail.com> To: "Dr. A. Haakh" <bugReporter@haakh.de> Cc: freebsd-questions@freebsd.org Subject: Re: fubar'ed it good this time... Message-ID: <CADy1Ce4yc5HvorDApkbrEQtDivpbxtRhr7=wZs8qckCD=f3ZjA@mail.gmail.com> In-Reply-To: <4E123EF5.9030406@Haakh.de> References: <BANLkTimc%2B-Dvjpp9h0DYg8ofFt-Yr8DrMg@mail.gmail.com> <4E08558A.7000101@my.gd> <BANLkTimbCcsdGnNLWcYvEjQUy5EHWDbVjQ@mail.gmail.com> <20110628052446.89911e0a.freebsd@edvax.de> <4E09DC21.6070903@Haakh.de> <BANLkTinx=RJsutvCrVziXg=S_-_7r_mTnQ@mail.gmail.com> <CADy1Ce6RztRFL3JVUufghkP=VJXCgeWJJXBPJRmBh=OrYTtb6w@mail.gmail.com> <4E123EF5.9030406@Haakh.de>
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On Mon, Jul 4, 2011 at 15:30, Dr. A. Haakh <bugReporter@haakh.de> wrote: > Kurt Buff schrieb: >> >> On Thu, Jun 30, 2011 at 17:31, Kurt Buff<kurt.buff@gmail.com> =C2=A0wrot= e: >> >>> >>> On Tue, Jun 28, 2011 at 06:50, Dr. A. Haakh<bugReporter@haakh.de> =C2= =A0wrote: >>> >>>> >>>> Polytropon schrieb: >>>> >>>>> >>>>> On Mon, 27 Jun 2011 06:40:27 -0700, Kurt Buff wrote: >>>>> >>>>> >>>>>> >>>>>> Your advice sounds reasonable, but that site seems devoted to zfs >>>>>> bootables. >>>>>> >>>>>> I wonder if an 8.1 livefs iso will do the trick... >>>>>> >>>>>> >>>>> >>>>> Check if you can download FreeSBIE somewhere. It's a live system >>>>> using the 5.x and 6.x kernel which should be fine. Next to two >>>>> GUI modes (light, heavy) it also has a versatile "maintenance mode" >>>>> for such operations. I have already successfully used this system >>>>> for solving similar situations, for diagnostics, and for data >>>>> recovery preparation. >>>>> >>>> >>>> The loader obviously knows how to deal with the filesystem because he >>>> loads >>>> the failing new kernel. So the easiest solution would be to boot an >>>> older >>>> kernel if available. I don't know how freebsd-update deals with older >>>> kernels, >>>> he should still be around. First guess is /boot/kernel.old/kernel. >>>> So get the loader-prompt, "unload kernel" and try "load >>>> /boot/kernel.old/kernel". >>>> >>>> Andreas >>>> >>> >>> OK - to continue, while I have a few free minutes. >>> >>> I have been able to load the old kernel by going to the loader prompt >>> from the boot menu, and doing >>> =C2=A0 =C2=A0 unload kernel >>> =C2=A0 =C2=A0 load /boot/kernel.old/kernel >>> >>> That barked about linproc in fstab, so I edited that out. >>> >>> Then, the next go-round: It complained about mismatches on >>> daemon_saver.ko - a version mismatch, so I've commented that out of >>> /etc/rc.conf. It also complained about linux.ko, so that's been >>> commented out in /etc/rc.conf as well. >>> >>> I'm now able to reboot cleanly with the old kernel. >>> >>> After doing 'freebsd-update install' for the second time, I still >>> can't get 8.2 to boot - same issue, only acd0 is recognized. However, >>> I'm logged in as root under the old kernel, though I haven't start >>> XFCE4, and don't have wireless running. >>> >>> This one is getting to be fun... >>> >>> Kurt >>> >> >> So, I tried booting from the old kernel again, and then did a >> 'freebsd-update rollback', and that worked just fine. I thought I'd >> try again, but first did a 'freebsd-update fetch' and 'freebsd-update >> install' to get the latest 8.1 updates. >> >> That worked just fine, so I did a 'freebsd-update -r 8.2-RELEASE >> fetch' again, then a 'freebsd-update install', which went just fine, >> and after that rebooted as directed to attempt the second >> 'freebsd-update install'. >> >> That's when the same thing happened - i got dumped into the mountroot >> prompt again. And, again, rebooting and escaping to the loader prompt >> allows me to unload the kernel, load /boot/kernel.old/kernel then >> autoboot, and boot up. Same as before. >> >> Any thoughts? >> > > Redo the rollback to 8.1 and install the 8.2-STABLE source-tree. You can > install the 8.1-sources from cd and update them to 8.2-STABLE using csup. > > Put the following lines in /etc/make.conf > SUP_UPDATE=3D =C2=A0 =C2=A0 YES > SUP=3D =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/usr/bin/csup > SUPHOST=3D =C2=A0 =C2=A0 =C2=A0 =C2=A0cvsup2.de.freebsd.org > SUPFILE=3D =C2=A0 =C2=A0 =C2=A0 =C2=A0/usr/share/examples/cvsup/stable-su= pfile > > Make sure that stable-supfile contains the right tag > *default release=3Dcvs tag=3DRELENG_8 > > Then goto /usr/src and "make update |tee _Update.log" > > Once the source-tree is up-to-date: > > Have a look at the FreeBSD Handbook: Chapter 8 - Configuring the FreeBSD > Kernel. > > Copy GENERIC to e.g. MYKERNEL, edit MYKERNEL and add some debug-flags. Se= e > /sys/conf/NOTES for additional debug-options. You may as well try GENERIC= - > maybe your problem is gone... > Then go to /usr/src and do s.th. like "make buildkernel KERNCONF=3DMYKERN= EL" > and if the kernel built fine install it: "make KERNCONF=3DYOURKERNEL > installkernel". You can also add KERNCONF=3DMYKERNEL to /etc/make.conf in= stead > of adding it to the make command. > Installing the new kernels moves /boot/kernel to /boot/kernel.old and > installs the new one in /boot/kernel. If the new kernel fails again, you = can > delete it: "rm -rf /boot/kernel && mv /boot/kernel.old /boot/kernel" thus > putting the previous kernel in the right place. > If the new kernel fails again, then press the Scroll-key and navigate to = the > disk-probe usind page-up-key. Write down the messages or take a photo and > post it to this list. > > If the STABLE kernel boots fine you will probably want to remove all the > debugging stuff and rebuild it. > > If you intend to keep the 8.1-kernel move it to e.g /boot/kernel-8.1 so i= t > will not be deleted, when you install new ones and you can always "load > /boot/kernel-8.1/kernel" from the loader > > Once the new kernel boots fine, cd /usr/src and follow the instructions i= n > Makefile how to build and install a new kernel and a new world. > > At this point there is no more need for kernel-8.1: delete it. > > Andreas That is roughly the direction I was thinking of heading next. I'll try this out, and get back to the list with results. Thanks! Kurt
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