[Xen-users] RuntimeError: Unable to find partition containing kernel

[Luceo Astrum <luceoastrum@xxxxxxxxx>]

Hardware:
2x Intel Xeon Quad-Core 2.33GHz
24GB FBDIMM RAM
2x 2TB HDD in RAID-1
Intel Server Board S5400SF

Setup:
Arch Linux x86_64
Xen 4.1.2
Grub2 Multiboot

Synopsis:
I set up a new VM for Debian Squeeze following instructions here: http://www.howtoforge.com/installing-debian-squeeze-6.0-domu-on-centos-5.5-x86_64-dom0. Partitioning & installation completed correctly. When I tried to run the VPS afterwards, I got this output:
| [root@srv0 xen]# xm create -c /etc/xen/xm-debian.cfg
| Using config file "/etc/xen/xm-debian.cfg".
| Error: Boot loader didn't return any data!
I've attached a more complete log output at the end of the mail.
This is the first VM I have tried to create on this setup.

Additional:
I can mount the partition within the lvm:
| [root@srv0 xen]# kpartx -av /dev/VPS/fennec
| add map VPS-fennec1 (253:2): 0 83881984 linear /dev/VPS/fennec 2048
| [root@srv0 xen]# mount /dev/mapper/VPS-fennec1 /mnt
| [root@srv0 xen]# cd /mnt
| [root@srv0 mnt]# ls
| bin   etc      lib     lost+found  opt   sbin     sys  var
| boot  home      lib32  media         proc  selinux  tmp  vmlinuz
| dev   initrd.img  lib64  mnt         root  srv        usr
| [root@srv0 mnt]# cd boot
| [root@srv0 boot]# ls
| config-2.6.32-5-amd64  initrd.img-2.6.32-5-amd64  vmlinuz-2.6.32-5-amd64
| grub               System.map-2.6.32-5-amd64
| initrd               vmlinuz
| [root@srv0 boot]# cd grub
| [root@srv0 grub]# cat menu.lst
| timeout 5
| default 0
|
| title Linux
| kernel /boot/vmlinuz root=/dev/xvda1
| initrd /boot/initrd
As you can see, the kernel (which is 2.6.32) and vmlinuz (also 2.6.32) exist in the /boot directory.

Pygrub:
Attempting to pygrub the VPS LVM gives the following output:
| [root@srv0 /]# pygrub --kernel=/boot/vmlinuz --ramdisk=/boot/initrd /dev/VPS/fennec
| Traceback (most recent call last):
|   File "/usr/bin/pygrub", line 774, in <module>
|     raise RuntimeError, "Unable to find partition containing kernel"
| RuntimeError: Unable to find partition containing kernel

domU Config File:
| name = "fennec"
| memory = 1024
| maxmem = 1024
| cpus = "2-7"
| disk = [
|     'phy:/dev/VPS/fennec,xvda,w',
|     'phy:/dev/VPS/fennec-swap,xvdb,w'
| ]
| vif = ['']
| bootloader = "pygrub"
| bootargs = "--kernel=/boot/vmlinuz --ramdisk=/boot/initrd"
I have tried this with and without the bootargs line without any success.

About The Filesystem:
/dev/VPS is a vg on a RAID-1 array
/dev/VPS/fennec is an lv on VPS vg
The fennec lv has a single ext3 partition of 40GB

xend.log Output:
[2012-07-20 09:35:17 907] DEBUG (XendDomainInfo:103) XendDomainInfo.create(['vm', ['name', 'fennec'], ['memory', 1024], ['maxmem', 1024], ['on_xend_start', 'ignore'], ['on_xend_stop', 'ignore'], ['vcpus', 1], ['cpus', '2-7'], ['oos', 1], ['bootloader', '/usr/bin/pygrub'], ['bootloader_args', '--kernel=/boot/vmlinuz --ramdisk=/boot/initrd'], ['image', ['linux', ['videoram', 4], ['tsc_mode', 0], ['nomigrate', 0]]], ['s3_integrity', 1], ['device', ['vbd', ['uname', 'phy:/dev/VPS/fennec'], ['dev', 'xvda'], ['mode', 'w']]], ['device', ['vbd', ['uname', 'phy:/dev/VPS/fennec-swap'], ['dev', 'xvdb'], ['mode', 'w']]], ['device', ['vif']]])
[2012-07-20 09:35:17 907] DEBUG (XendDomainInfo:2498) XendDomainInfo.constructDomain
[2012-07-20 09:35:17 907] DEBUG (balloon:187) Balloon: 22794808 KiB free; need 16384; done.
[2012-07-20 09:35:17 907] DEBUG (XendDomain:476) Adding Domain: 17
[2012-07-20 09:35:17 907] DEBUG (XendDomainInfo:2836) XendDomainInfo.initDomain: 17 256
[2012-07-20 09:35:17 25157] DEBUG (XendBootloader:113) Launching bootloader as ['/usr/bin/pygrub', '--output=/var/run/xend/boot/xenbl.15844', '--kernel=/boot/vmlinuz', '--ramdisk=/boot/initrd', '/dev/VPS/fennec'].
[2012-07-20 09:35:17 907] ERROR (XendBootloader:214) Boot loader didn't return any data!
[2012-07-20 09:35:17 907] ERROR (XendDomainInfo:488) VM start failed
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/lib/python2.7/site-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 2838, in _initDomain
    self._configureBootloader()
  File "/usr/lib/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 3285, in _configureBootloader
    bootloader_args, kernel, ramdisk, args)
  File "/usr/lib/python2.7/site-packages/xen/xend/XendBootloader.py", line 215, in bootloader
    raise VmError, msg
VmError: Boot loader didn't return any data!
[2012-07-20 09:35:17 907] DEBUG (XendDomainInfo:3071) XendDomainInfo.destroy: domid=17
[2012-07-20 09:35:17 907] DEBUG (XendDomainInfo:2406) No device model
[2012-07-20 09:35:17 907] DEBUG (XendDomainInfo:2408) Releasing devices
[2012-07-20 09:35:17 907] ERROR (XendDomainInfo:108) Domain construction failed
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 106, in create
    vm.start()
  File "/usr/lib/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 474, in start
    XendTask.log_progress(31, 60, self._initDomain)
  File "/usr/lib/python2.7/site-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 2838, in _initDomain
    self._configureBootloader()
  File "/usr/lib/python2.7/site-packages/xen/xend/XendDomainInfo.py", line 3285, in _configureBootloader
    bootloader_args, kernel, ramdisk, args)
  File "/usr/lib/python2.7/site-packages/xen/xend/XendBootloader.py", line 215, in bootloader
    raise VmError, msg
VmError: Boot loader didn't return any data!

Appreciate any suggestions.
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxx
http://lists.xen.org/xen-users