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Re: network booting

thank you very much for your response. (sorry, my english isnt very good).I try to specify the problem. What is in the instructions I run OK, I tried to, there is a problem. It is to me but to the whole system started from a file, such as a rootfs.gz. And that was the root from /dev/ram0 and not dependent on the running of the server where the NFS. And throughout the / (rootfs) would be in memory, instead of NFS, as it is in the instructions, or with you. My procedure was as follows.

1) i create 400M file
dd if=/dev/zero of=ext.img bs=1024k count=400
2) and ext2 on this file
mkfs -t ext2 ext.img
3) mount this file as loop to /mnt
mount ext.img /mnt/ -o loop
3) to this file i copy rootfs
(a) deboostrap + setup kernel ; b) copy running system (cp -ax) )
4) modify fstab in "new" system:
/dev/ram0       /               auto    defaults        0       0
5) umount /mnt/ and gzip: gzip -c ext.img > rootfs.gz
6) config tftp on router:
router:/var/lib/tftpboot/pxelinux.cfg# cat default
default linux
label linux
kernel vmlinuz
append vga=normal init=/sbin/init initrd=rootfs.gz ramdisk_size=750000 root=/dev/ram0 rw --

when i start diskless pc, system start booting ok, get ip ok, get rootfs.gz ok (screen here: http://www.sdilej.eu/pics/f2525f3751c0f396b53f722494f7c0e5.PNG ) booting kernel is ok, but this go down with this message: http://www.sdilej.eu/pics/f31ae42809c9ea4795450a8da1cb3695.PNG

this is doing on debian etch, in lenny is dont write "list of partitions".

thank you very much, nice day.


Steve Kemp napsal(a):
On Sat Mar 21, 2009 at 13:22:31 +0100, michal krajcirovic wrote:

Appreciate any idea to solve, or even pay for some help (paypal, ...),
but a lot of me to burn it and you do not know advice.

  You don't say what part failed.  In general you'll receive no
 help unless you explain what you've tried, which part failed,
 and what error messages you received.

  The basic stuff, getting a PXE network setup for installation,
 is described here:


  If you can get that part working then you're almost there, you
 only have to use debootstrap/similar to create a filesystem
 exported by NFS and then pass that via your PXE setup.

  My PXE file contains this:

  LABEL netboot
      KERNEL netboot/vmlinuz-
      APPEND root=/dev/nfs initrd=netboot/initrd.img- nfsroot= ip=dhcp rw

  The kernel I copied from my host system.  The initrd I generated after
  changing /etc/initramfs-tools/initramfs.conf to have "root = NFS" and
  rebuilding it.

  In terms of the actual NFS root I export it like this:

  There's nothing special in the root, just a simple filesystem
 with NFS root, and simple /etc/network/interfaces to default to
 usign DHCP


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