OK, I got some time to work on this and I'm bumping into trouble:
I've got NFS, DHCP, and TFTP all up and working. When my client boots
I'm getting the following error:
No filesystem could mount root, tried: ext2 iso9660
Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(9,1)
I'm creating the initrd while chrooted inside the root for my ltsp
clients. Here's the vitals:
initrd is being created by this script:
#!/bin/bash
# script to create an LTSP initrd for RHEL 5
kernelver=$1
mkinitrd -v -f --preload=3c59x \
--preload=amd8111e \
--preload=epic100 \
--preload=mii \
--preload=ns83820 \
--preload=skge \
--preload=sungem \
--preload=via-velocity \
--preload=8139cp \
--preload=b44 \
--preload=dl2k \
--preload=fealnx \
--preload=myri10ge \
--preload=r8169 \
--preload=sky2 \
--preload=sungem_phy \
--preload=8139too \
--preload=bnx2 \
--preload=dummy \
--preload=forcedeth \
--preload=natsemi \
--preload=pcnet32 \
--preload=s2io \
--preload=slhc \
--preload=sunhme \
--preload=8390 \
--preload=ifb \
--preload=ne2k-pci \
--preload=sis190 \
--preload=tg3 \
--preload=typhoon \
--preload=acenic \
--preload=cassini \
--preload=e100 \
--preload=sis900 \
--preload=starfire \
--preload=tlan \
--preload=via-rhine \
--preload=winbond-840 \
--preload=xircom_cb \
--preload=de2104x \
--preload=uli526x \
--preload=tulip \
--preload=de4x5 \
--preload=dmfe \
--preload=smsc \
--preload=libphy \
--preload=lxt \
--preload=cicada \
--preload=marvell \
--preload=qsemi \
--preload=fixed \
--preload=vitesse \
--preload=davicom \
--preload=cxgb /boot/initrd-${kernelver}.img ${kernelver}
/etc/fstab inside the chroot looks like this:
192.168.1.1:/opt/ltsp/i386 / nfs dhcp 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
/etc/sysconfig/mkinitrd looks like this:
rootdev=nfs
NET_LIST=eth0
rootfs=nfs
Using mkinitrd-6.0.19-1 and kernel-2.6.18-8.1.14.el5
It looks like the client isn't even attempting the NFS root mount. What
am I doing wrong here?
Thanks,
Jeffrey Law wrote:
On Fri, 2007-10-26 at 15:30 -0600, David A. Kennel wrote:
That is the idea exactly. All of the client nodes share a single
/etc/fstab.
So if I understand you correctly, if my /etc/fstab looks like the one
below the clients will ignore the "192.168.0.1:/opt/ltsp/i386" part and
get the NFS server from the DHCP response.
#bogus nfs server for client roots to make initrd work
192.168.0.1:/opt/ltsp/i386 / nfs dhcp 0 0
proc /proc proc
defaults 0 0
Correct. I don't have experience passing them via DHCP (instead I've
passed in the correct root via tftpboot), but the net result should be
the same.
Basically whatever you have in your fstab gets embedded into the
initrd, but can be overridden via tftpboot (and presumably DHCP).
This is important as it allows you to share an initrd across
clients, even if the clients mount their root filesystem from
different servers.
Jeff
--
--
David Kennel
Los Alamos National Laboratory
CTN-1
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