fai 4.0.5: dracut boot ends with kernel panic

[Sven Schumacher]

Hello Nicolas,

It looks very similar to my first steps using FAI:

So you tried already adding :vers=3 to your cmdline after the root=a.b.c.d:/srv/fai/nfsroot in your /srv/tftp/fai/pxelinux.cfg/HOSTNAME
which you created using fai-chboot ?

Is the nfs-server the same as the tftp?

Are you able to mount the nfsroot, when you booted via live-cd that particular client? so /etc/exports is set up correct on the nfs-server?

I hope, it helps tracking down the panic

Sven 


Am 23.01.2013 um 19:43 schrieb Nicolas Courtel <courtel at cena.fr>:

> Hello,
> 
> I'm trying to use dracut in FAI 4.0.5 on a wheezy 64bits server, and the initial boot on nfsroot quickly goes into kernel panic:
> 
> [   11.578824] dracut: Mounted root filesystem a.b.c.d:/srv/fai/wheezy/nfsroot-amd64
> [   11.581213] aufs: module is from the staging directory, the quality is unknown, you have been warned
> [   11.582117] aufs 3.2-20120827
> warning: can't open /etc/fstab: No such file or directory
> [   12.010629] aufs test_add:261:mount[366]: uid/gid/perm /live/image 65534/65534/0755, 0/0/01777
> [   12.015811] type=1702 audit(1358959337.356:2): op=follow_link action=denied pid=371 comm="ls" path="/sysroot/initrd.img" dev="aufs" ino=149
> [   12.015995] type=1702 audit(1358959337.356:2): op=follow_link action=denied pid=371 comm="ls" path="/sysroot/vmlinuz" dev="aufs" ino=165
> /init: 42://lib/dracut/hooks/pre-pivot/50mount-usr.sh: cannot open /sysroot/etc/fstab: No such file
> [   12.260523] dracut: Switching root
> pcbind: rpcbind terminating on signal. Restart with "rpcbind -u"
> switch_root: failed to execute /sbin/init: Not a directory
> [   12.262090] Kernel panic - not syncing: attempting to kill init!
> 
> 
> nfsroot has been successfully built using fai-chboot -SFv, and only contains an empty /etc/fstab, and no /sysroot directory or link.
> 
> I initially thought that the problem was caused by nfs4 use of nobody:nogroup to mount the nfsroot, but forcing the use of nfs3 is useless.
> 
> Could someone help me figure out what I am doing wrong?
> 
> Thanks,
> 
> -- 
> Nicolas