Hello Otto, First of all, thank you for the quick reply.
On 11 November 2014 16:25, Otto Moerbeek <[email protected]> wrote: > On Tue, Nov 11, 2014 at 04:10:48PM +0200, Nikos Skalkotos wrote: > >> Hello all, >> >> I have a kernel page fault in OpenBSD 5.6 100% reproducible (I think I >> can reproduce it in older versions too). >> >> I've created an OpenBSD installation in Linux through kvm on a 1GB hard >> disk with just a root partition (a), by booting the install56.iso cdrom >> with a command like this: >> >> # kvm -smp 1 -m 2048 -boot d -drive \ >> file=/dev/images/openbsd-5.6,format=raw,cache=none,if=virtio -cdrom >> /tmp/install56.iso -vnc :0 >> >> The system boots fine with a command like this: >> # kvm -m 2048 -drive file=/dev/images/openbsd,format=raw,cache=none,if=virtio >> >> If I then copy it into a 100GB volume: >> # dd if=/dev/images/openbsd of=/dev/images/tmp1 bs=4M >> >> And try to boot it, it still boots fine. I then boot into the VM's >> rescue disk: >> >> > boot bsd.rd >> >> and press S to get a shell >> >> I mount the root partition and grab growfs program: >> # mount /dev/sd0a /mnt >> # cp /mnt/sbin/growfs . >> # umount /mnt >> >> Fix the MBR to use the entire disk: >> # fdisk -i wd0 > > I assume that wd0 should be sd0? Yes this was a typo > >> >> And change the disklabel: >> >> # disklabel -E sd0 >> >> Change the OpenBSD boundaries to cover the whole disk: >> > b >> Starting sector: [64] >> Size ('*' for entire disk):[] * >> >> and then grow the root partition to make it 100GB log: >> > c >> partition to change size: [] a >> >> Then grow the underlying FFS file system: >> >> # growfs /dev/sd0a >> >> If I then reboot, the ffs driver crashes with errors like this: >> >> uvm_fault(0xffffffff81dcddc0, 0xc000068, 0, 2) -> e >> kernel: page fault trap, code=0 >> Stopped at ffs_vget+0x115: addb %al, 0(%rcx,%rax,1) >> ddb> >> >> Am I missing something or is this a kernel/growfs bug? >> >> Thank you in advance, >> >> Nikos Skalkotos > > What does fsck say after you have grown the fs? > > Yoy probably need to force fsck, see BUGS section of growfs(8). > I tried it and it justs asks if I want to mark the file system as clean and states that the filesystem has been modified in the end. But still, the file system seems to be corrupted. I can reproduce this for big filesystems (50G or 100G). I tried to use ide, instead of virtio but I still get errors. It's 100% reproducible for big filesystems :-( > -Otto Does anybody have enough space to try it out? The funny thing is that if I directly install the OpenBSD system on the 100G drive, and just create a 1G root partition and enlarge it afterwards it works. But If I install it in a small volume and then do the aforementioned procedure it always crashes. I don't thing this is a hardware issue from my side. Nikos
