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On 4/30/07, Stefan van der Eijk <[email protected]> wrote:
Hi,

I'm trying to get FC6 working on a diskless system. I hope this is the
correct list to discuss this topic, if not please ignore this message.

As I mentioned, I'm trying to get FC6 to work in a diskless system. To
do this I first installed FC6 in a VMware (with disk). I'm using that
as the "example" system.

I'm following the instructions provided in the documentation of the
system-config-netboot-0.1.41-1.FC6 package. After rsyncing over the
files to the NFS server, setting up DHCP and TFTP servers it's time
for the first attempt. The diskless client is a vmware, confgured to
boot over the network (PXE).

With the first attempt, the system stops with the following error:
"Mounting rot filesystem: /nfsroots/fc6-diskless/root from 192.168.254.254
mount: wrong fs type, bad option, bad superblock on
192.168.254.254:/nfsroots/fc6-diskless/root,
missing codepage r other error
In some cases useful info is found in syslog - try dmesg | tail  or
so."

For screenshot see: http://eijk.homelinux.org/~stefan/fc-diskless/1.jpg

As mentioned in
http://www.mythtv.org/wiki/index.php/Diskless_Frontend#Redhat_and_Fedora_Core
/sbin/mount.nfs is missing in the initrd.img. This patch adds it
(although I'm not sure if mount.nfs4 should be added too):

# diff -ur /usr/share/system-config-netboot/diskless/updateDiskless.orig
/usr/share/system-config-netboot/diskless/updateDiskless
--- /usr/share/system-config-netboot/diskless/updateDiskless.orig
 2007-04-29 23:18:24.000000000 +0200
+++ /usr/share/system-config-netboot/diskless/updateDiskless
2007-04-29 23:18:50.000000000 +0200
@@ -114,7 +114,7 @@
 done;
 #/bin/cp "$ROOT"/usr/share/hwdata/pcitable $MNTPOINT/usr/share/hwdata/ || die;
 # disklessrc now uses modules.pcimap, not pcitable
-BINS="/sbin/busybox.anaconda /sbin/insmod /sbin/modprobe /sbin/rmmod
/sbin/dhclient /bin/bash /bin/mount /sbin/route /sbin/ip /usr/bin/expr
/sbin/lspci /sbin/ifconfig /sbin/consoletype /sbin/pivot_root
/bin/hostname /bin/domainname /usr/bin/host"
+BINS="/sbin/busybox.anaconda /sbin/insmod /sbin/modprobe /sbin/rmmod
/sbin/dhclient /bin/bash /bin/mount /sbin/mount.nfs /sbin/mount.nfs4
/sbin/route /sbin/ip /usr/bin/expr /sbin/lspci /sbin/ifconfig
/sbin/consoletype /sbin/pivot_root /bin/hostname /bin/domainname
/usr/bin/host"
 # Set up links to all the busybox functions -
 # may be different for different versions of busybox!
 if [ ! -e $ROOT/sbin/busybox.anaconda ]; then

2nd attempt ended with it complaining that it couldn't pivot_root.
Seems that /.oldroot directory isn't created. For screenshot see:
http://eijk.homelinux.org/~stefan/fc-diskless/2.jpg

After making that directory it also complains that /.snapshot isn't
made either. Starting udev takes ages,
http://eijk.homelinux.org/~stefan/fc-diskless/3.jpg

I didn't wait for it to finish, just made the directory on the NFS
server and reset the vmware.

http://eijk.homelinux.org/~stefan/fc-diskless/4.jpg

After re-reading the .html pages in
/usr/share/doc/system-config-netboot-0.1.41/ I followed the
instructions to create a client. Changed the pxe config to reflect
this.

label fc6
        KERNEL vmlinuz
        APPEND initrd=initrd.img root=/dev/ram0 init=disklessrc
NFSROOT=192.168.254.254:/nfsroots/fc6-diskless ramdisk_size=19102
ETHERNET=eth0 SNAPSHOT=fc6-diskless

resulting in this: http://eijk.homelinux.org/~stefan/fc-diskless/5.jpg

added "ramdisk_blocksize=1024", from
http://www.mythtv.org/wiki/index.php/Diskless_Frontend#Redhat_and_Fedora_Core

The end result is a FC6 diskless client that hangs on starting udev.
http://eijk.homelinux.org/~stefan/fc-diskless/6.jpg

I'm wondering what I've missed in the documentation and what I'm doing
wrong. I feel that I'm already correcting too many things myself -->
this stuff should be made in a way that it just works and is trivial
to set up. As the package version/release is still the same in
rawhide, I guess this same package is going to be shipped with FC7.

What would be the best way to move forward? Shall I start with filing
some bugreports? Or is this not the right time to do so (freeze for
fc7)?

with kind regards,

Stefan van der Eijk
Have you considered using Linux Terminal Server,
http://sourceforge.net/projects/ltsp/ ?


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