proxmox or kvm - openwrt / xwrt install

[peril]

Figured I'd share this - it took about 10 seconds to do but it's a neat setup - (not as stable as I would like it seems to wedge after 1 day - but need to watch it closer...)

1) d/l the images file from http://downloads.x-wrt.org/xwrt/kamikaze/8.09/x86/default/openwrt-x86-ext2.image

2) fire up a new kvm container in proxmox

3) copy the file to the destination of the kvm container file (i.e. ide0: local:108/vm-108-disk-1.raw)

4) If you feel like editing the grub bootup args - mount up the image with mount -o loop,offset=32256 vm-108-disk-1.raw /tmp/a, I added a clock=pit, not sure if it helps cause I didn't try it without it for a long time - (can tell you watching the windows clock is MADDENING in kvm on AMD x64)

Add some interfaces - and there you go - insta migratable routing platform.

--Adrian

 

[fpausp]

I tried to boot openwrt-x86-generic-combined-ext2.img (latest) but I got a kernel panic, have you tested a current image ?

 

[peril]

I tried to boot openwrt-x86-generic-combined-ext2.img (latest) but I got a kernel panic, have you tested a current image ?

I was futzing around - haven't updated my openwrt since 2009 :-\ - and now the xwrt project got abandoned... updating instructions for 12.09, but still working
[snip]
from - https://forum.openwrt.org/viewtopic.php?id=41604
(This reply comes rather late - but for what its worth...)
Actually the problem stems from the GRUB "root=" parameter settings.
This can be fixed in a number of ways. Two are presented below:
If "Method 1" is rather painstaking, by all means use "Method 2".

Method 1 (Pro-style)
=====================
$ sudo losetup /dev/loop0 openwrt-x86-kvm_guest-combined-ext4.img
$ sudo fdisk -u -l /dev/loop0
Disk /dev/loop0: 55 MB, 55008768 bytes
16 heads, 63 sectors/track, 106 cylinders, total 107439 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/loop0p1 * 63 9071 4504+ 83 Linux
/dev/loop0p2 9135 107855 49360+ 83 Linux
$ sudo losetup -o 32256 /dev/loop1 /dev/loop0
(where: 32256 = 512 * 63)
$ mkdir temp
$ sudo mount /dev/loop1 temp
Edit the GRUB "root" parameter in "temp/boot/grub/menu.lst" such that:
$ cat temp/boot/grub/menu.lst
(...)
title OpenWrt
(...)
kernel /boot/vmlinuz root=/dev/sda2 (...)
(...)
title OpenWrt (failsafe)
(...)
kernel /boot/vmlinuz failsafe=true root=/dev/sda2 (...)
(...)
$ sudo umount temp/
$ sudo losetup -d /dev/loop1
$ sudo losetup -d /dev/loop0
Boot with, say:
$ sudo kvm openwrt-x86-kvm_guest-combined-ext4.img
You should now get past the "Waiting for root device /dev/vda2..." and
reach "Please press Enter to activate this console." message.
Method 2 (Ad-hoc style)
=================
1. Quickly download "http://downloads.openwrt.org/attitude_a … st-vmlinuz"
2. Boot with:
$ sudo kvm -kernel openwrt-x86-kvm_guest-vmlinuz -hda openwrt-x86-kvm_guest-combined-ext4.img -append "root=/dev/sda2 rw"
3. You should succeed in getting to the prompt. Now (in the Qemu VM console),
# mkdir some
# mount /dev/sda1 some
# vim /some/boot/grub/menu.lst
To edit GRUB "root=" param settings to change "vda2" to "sda2" (as shown in "Method 1").
# umount some
# rm -r some
# halt
4. Now boot without the "openwrt-x86-kvm_guest-vmlinuz" image e.g.
$ sudo kvm openwrt-x86-kvm_guest-combined-ext4.img
--
Mugabi.