On Wed, 05 Aug 2015 09:30:28 -1000 parv <p...@bitter-almonds.com> wrote
> On August 5, 2015 4:10:14 AM HST, Ian L > wrote: > >On Tue, 2015-08-04 at 23:54 -1000, parv wrote: > >> Please CC me as I cannot properly use my laptop, Thinkpad X200 > >(i386). > >> > >> 8-stable has been crashing a lot since source update of Jul 2015[0]. > >After building debug kernel, kgdb shows lock reversal order & in > >ufsdirhash. File systems (/, var, misc) are all UFS, with var & misc > >having soft updates enabled. > >> > >> Crash had happened just after boot (during mktemp); when I tried to > >delete a directory (/misc/obj); when I tried to edit (vi /etc/fstab) so > >that / would be mounted readonly. Most recent crash ... > >> > >> http://imagebin.ca/v/2B50NARvIHsH > >> > >> Any clue would be appreciated. > ... > >When you say you built a debug kernel, does that include option > >WITNESS_KDB? If so, remove that so you can find the real error. LORs > >related to ufs_dirhash have been reported for years, and nobody with > >the > >appropriate skills seems to be interested in fixing them; they just get > >declared to be harmless. > > I will try that as soon as I can. Currently after every little fs operation, > I am thrown in debugger-reboot-fsck cycle. As such I cannot do anything. > > This is my own damn fault because the non-debug kernel would run for some > random but meaningful amount of time before crash & reboot. I tried booting > /boot/kernel.old/kernel from boot prompt but that presented debugger soon > after boot. > > BTW is it possible to set kernel.old to boot next time at boot prompt? It might be somewhat easier to boot from the boot-only/install CD/DVD, and then choose rescue mode. After you've gotten there. Simply mount "/" in read/write, them open it's /boot/loader.conf, and add the following: kernel="kernel.old" boot_single="YES" and save it. You can then remove the CD/DVD, and reboot which will land you in single-user mode, from your kernel.old/kernel. Assuming it booted to that kernel OK, you can run fsck -f After it finishes, don't forget to re-edit /boot/loader.conf, and comment those lines you added earlier -- well at least: boot_single="YES" HTH --Chris > > > -- > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org" _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
