Xen users - May 2008 - problem starting domU with pygrub

Hi!

I have installed CentOS 5.1 (x86_64) on a server and I have
installled xen 3.2.1 from source.

I created a config for a domU (also CentOS) and started
installing. So far so good but when I try to boot this domU with
bootloader="/usr/bin/pygrub" it hangs, ie. the pygrub process is
a zombie.

Config used for installation:

kernel = "/boot/xen/centos/i386/vmlinuz"
ramdisk = "/boot/xen/centos/i386/initrd.img"
extra = "text"
name = "pro-db"
memory = "8192"
disk = [ ''phy:int/pro-db-root,xvda,w'',
''phy:int/pro-db-swap,xvdb,w'',
''phy:mellan/pro-db-data,xvdc,w'' ]
vif = [ ''bridge=xenbr0'', ]
vcpus=4
on_poweroff = ''destroy''
on_reboot   = ''destroy''
on_crash    = ''destroy''
access_control = [''policy=proodle,label=proodle'']

Config used for normal boot:

name = "pro-db"
memory = "8192"
disk = [ ''phy:int/pro-db-root,xvda,w'',
''phy:int/pro-db-swap,xvdb,w'',
''phy:mellan/pro-db-data,xvdc,w'' ]
vif = [ ''bridge=xenbr0'', ]
bootloader="/usr/bin/pygrub"
vcpus=4
on_poweroff = ''destroy''
on_reboot   = ''restart''
on_crash    = ''restart''
access_control = [''policy=proodle,label=proodle'']

I try to start the domU with ``xm create pro-db -c'''' and it
says:
Using config file "/etc/xen/pro-db".

and then nothing happens.

The xend logfile just states: DEBUG (XendBootloader:100) Launching bootloader as
[''/usr/bin/pygrub'',
''--output=/var/run/xend/boot/xenbl.31933'',
''/dev/int/pro-db-root''].

``xm list'''' states:

Name                                        ID   Mem VCPUs      State   Time(s)
pro-db                                       1  8192     0     -bp---      0.0


I have attached a file with the output from ``xm dmesg''''. If
you need any more info please let me know. 

Also, the whole reason I installed 3.2.1 is that 32-bit domU on
64-bit dom0 doesn''t work with the version that CentOS 5.1 ships
with.

-- 
Marcus Larsson, Stockholm, Sweden
<http://kore.hack.se/contact/>


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On Wed, May 14, 2008 at 10:03:04PM +0200, Marcus Larsson wrote:
 
> I have installed CentOS 5.1 (x86_64) on a server and I have
> installled xen 3.2.1 from source.
> 
> I created a config for a domU (also CentOS) and started
> installing. So far so good but when I try to boot this domU with
> bootloader="/usr/bin/pygrub" it hangs, ie. the pygrub process is
> a zombie.
Ok, I''ll answer my own question here. ;)

The problem was that the fsimage.so file was installed in
/usr/lib64/python and pygrub didn''t include that directory in
the path.

$ grep path /usr/bin/pygrub
sys.path = [ ''/usr/lib/python'' ] + sys.path

I changed the pygrub script so that it includes
/usr/lib64/python and now pygrub works.

On CentOS there is no such directory /usr/lib/python.

-- 
Marcus Larsson, Stockholm, Sweden
<http://kore.hack.se/contact/>

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On Thu, May 15, 2008 at 07:57:03AM +0200, Marcus Larsson wrote:
> $ grep path /usr/bin/pygrub
> sys.path = [ ''/usr/lib/python'' ] + sys.path
Why is pygrub touching the default search paths at all?

regards
john

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