dracut error netbooting Power7

[Karsten Hopp]

Am 19.03.2012 17:13, schrieb Bryson Lee:
> Hi,
>
> I'm trying to do a network-based install of Fedora 16 on an IBM PS710 (8231-E2B).  I have existing Cobbler infrastructure that we're using to provision these boxes with Fedora 12, so I'd hoped to be able to give F16 a quick spin to see if we can start thinking about moving forward.
>
> The DVD iso appeared to import cleanly as a Cobbler distro, and the box successfully TFTP's yaboot, vmlinux, and the initrd and _starts_ to boot the kernel, but Dracut issues a " FATAL: No or empty root= argument" and then panics the kernel.  I've included the message output below.
>
> Any suggestions?  The only place I can think of to put a root= argument is in the Cobbler-generated yaboot config file, but I don't know what to specify there...
>
> Thanks,
>
> -Bryson
>
> Dracut and kernel-panic messages...
>
> [    3.844732] dracut: dracut-013-18.fc16
> [    3.864001] dracut: FATAL: No or empty root= argument
> [    3.864013] dracut: Refusing to continue
>
>
> [    3.864103] dracut Warning: Signal caught!
> dracut Warning: Signal caught!
> [    3.864182] dracut Warning: dracut: FATAL: No or empty root= argument
> dracut Warning: dracut: FATAL: No or empty root= argument
> [    3.864227] dracut Warning: dracut: Refusing to continue
> dracut Warning: dracut: Refusing to continue
>
> [    3.864398] Kernel panic - not syncing: Attempted to kill init!
> [    3.864402] Call Trace:
> [    3.864409] [c0000003c8903a10] [c000000000017e14] .show_stack+0xb4/0x1d0 (unreliable)
> [    3.864421] [c0000003c8903ad0] [c00000000081791c] .dump_stack+0x28/0x3c
> [    3.864427] [c0000003c8903b50] [c000000000819244] .panic+0xac/0x228
> [    3.864433] [c0000003c8903bf0] [c0000000000e0fec] .do_exit+0x91c/0x960
> [    3.864438] [c0000003c8903d00] [c0000000000e1390] .do_group_exit+0x60/0x100
> [    3.864444] [c0000003c8903da0] [c0000000000e145c] .SyS_exit_group+0x2c/0x30
> [    3.864450] [c0000003c8903e30] [c000000000009800] syscall_exit+0x0/0x40
> [    3.865702] Rebooting in 180 seconds..
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Something like this in yaboot.conf should work:

append="root=live:ftp://servername/somepath/Fedora-16-ppc64-netinst.iso"