Getting Xen to go along with LVM

[Hugo Silva <hugo%barafranca.com@localhost>]

Hello everyone,

I've been, during the past few days, trying to run domUs backed by LVMs, 
so far without success.



Here's what I get:

# xm create -c 
/usr/pkg/xen/conf/netbsd50.conf                                                                                                         

Using config file "/usr/pkg/xen/conf/netbsd50.conf".
Started domain netbsd-pv
: Intel 686-class, 2405MHz, id 0x6fb
xenbus0 at hypervisor0: Xen Virtual Bus Interface
xencons0 at hypervisor0: Xen Virtual Console Driver
xencons0: using event channel 2
xbd0 at xenbus0 id 1: Xen Virtual Block Device Interface
xennet0 at xenbus0 id 0: Xen Virtual Network Interface
xennet0: MAC address aa:aa:00:c4:aa:f4
(domU becomes unresponsive)


If I replace "disk = [ 'phy:/dev/mapper/vg00-lv0,0x1,w' ]" with disk = [ 
'file:/usr/pkg/xen/netbsd.img,0x1,w' ], it will boot perfectly.


Nothing interesting in the logs.. (xend.log)
[2009-11-09 18:29:17 2891] DEBUG (DevController:166) Waiting for devices 
irq.
[2009-11-09 18:29:17 2891] DEBUG (DevController:166) Waiting for devices 
vkbd.
[2009-11-09 18:29:17 2891] DEBUG (DevController:166) Waiting for devices 
vfb.
[2009-11-09 18:29:17 2891] DEBUG (DevController:166) Waiting for devices 
console.
[2009-11-09 18:29:17 2891] DEBUG (DevController:171) Waiting for 0.
[2009-11-09 18:29:17 2891] DEBUG (DevController:166) Waiting for devices 
pci.
[2009-11-09 18:29:17 2891] DEBUG (DevController:166) Waiting for devices 
ioports.
[2009-11-09 18:29:17 2891] DEBUG (DevController:166) Waiting for devices 
tap.
[2009-11-09 18:29:17 2891] DEBUG (DevController:166) Waiting for devices 
vtpm.
[2009-11-09 18:29:17 2891] INFO (XendDomain:1174) Domain netbsd-pv (6) 
unpaused.



I know the logical volume is good: /dev/mapper/vg00-lv0: block special


# newfs -O2 /dev/mapper/rvg00-lv0 
/dev/mapper/rvg00-lv0: 20480.0MB (41943040 sectors) block size 16384, 
fragment size 2048
       using 111 cylinder groups of 184.52MB, 11809 blks, 22912 inodes.
super-block backups (for fsck_ffs -b #) at:
160, 378048, 755936, 1133824, 1511712, 1889600, 2267488, 2645376, 
3023264, 3401152, 3779040, 4156928, 4534816, 4912704, 5290592, 5668480, 
6046368, 6424256, 6802144, 7180032,
...................................................................................................................................................................................

# df -h /mnt
/dev/mapper/vg00-lv0       19G       2.0K        18G   0% /mnt



I don't know what to try next. It would be really nice to get Xen 
running with LVM on NetBSD!

Any pointers welcome :)