Hi,
I’m trying to get a diskless set up to work (PXE). It is mostly working but upon booting the installed system it drops me into an emergency shell because it couldn’t mount the root filesystem. I can manually continue and boot thereafter.
I use pxelinux to do the PXE stuff and this is how I installed openSUSE (using Factory-Snapshot20140909, since the official 13.1 release iso doesn’t work)
label install64sn
[INDENT=2]kernel pxelinux.cfg/openSUSE-Factory-DVD-x86_64-Snapshot20140909-Media/boot/x86_64/loader/linux
ipappend 2
append
[/INDENT]
[INDENT=3]initrd=pxelinux.cfg/openSUSE-Factory-DVD-x86_64-Snapshot20140909-Media/boot/x86_64/loader/initrd
ip=dhcp
install=nfs://192.168.0.95/volume1/srv/tftpboot/pxelinux.cfg/openSUSE-Factory-DVD-x86_64-Snapshot20140909-Media.iso
[/INDENT]
I then installed the system by mounting only one partition on / in the partition manager: /volume1/srv/tftpboot/pxelinux.cfg/persistent
Then I tried booting the system with various options. The only option (so far) that gets me to an emergency shell from which I’m able to continue is:label o5
[INDENT=2]kernel pxelinux.cfg/persistent/boot/vmlinuz
append
[/INDENT]
[INDENT=3]ip=192.168.0.11:192.168.0.1:255.255.255.0:laptop:em1:off vga=normal
initrd=pxelinux.cfg/persistent/boot/initrd
root=nfs:192.168.0.95:/volume1/srv/tftpboot/pxelinux.cfg/persistent:rw,nolock
[/INDENT]
This drops me into an emergency shell because it cannot mount the root filesystem. This I can manually achieve by typing:root# ifup em1
root# mount -t nfs 192.168.0.95:/volume1/srv/tftpboot/pxelinux.cfg/persistent /sysroot
root# exit
Funny enough, after the ifup em1 the machine has IP address 192.168.0.8 (which is in the PXE range): I have two DNS servers in my network:
- one serving out addresses to non-pxe requests 192.168.0.100 - 254
- one serving out addresses to pxe requests 192.168.0.3-8
It seems to go wrong shortly after:
15.711198] linux-pg59 systemd-udevd[300]: renamed network interface eth0 to em1
So either the em1 interface isn’t set up properly, or the renaming action destroys the set-up. Weird.
Anyone a clue as to how this can be fixed?
- how can I make sure the network set-up is working properly? Is this a bug that makes booting with NFS root filesystem impossible?
- how can I ensure myself the above steps get executed automatically at the right moment?
Thanks for your input