[Xen-users] kernel-ml + recent xen on el6: xenbus_dev_shutdown errors solved

[Mark Pryor <tlviewer@xxxxxxxxx>]

List,

Install a headless or minimal Centos 6 without kernel or kernel-firmware.
Setup the elrepo-kernel repo and use package kernel-ml and kernel-ml-firmware.

For xen, use CRCau or Mayoung repo as long as the packages follow the FC17 
breakdown:
sudo rpm -qa | grep xen
xen-licenses-4.1.3-4.el6.x86_64
xen-doc-4.1.3-4.el6.x86_64
xen-libs-4.1.3-4.el6.x86_64
xen-hypervisor-4.1.3-4.el6.x86_64
xen-runtime-4.1.3-4.el6.x86_64
xen-4.1.3-4.el6.x86_64



We will use only 3 of the xen services, but verify the sequence/runlevels first.

for i in xencommons xenconsoled xenstored xend xendomains; do
chkconfig --del $i

done

check the sequence numbers and runlevels and edit the init scripts in 
/etc/init.d if necessary. The meta
data is set in the header of the init script:

--------------- snip startup and kill sequence numbers ------------

sudo ls  /etc/rc6.d/ | grep xen
K00xencommons
K01xendomains
K02xend
[tlviewer@c6dom0 ~]$ sudo ls  /etc/rc3.d/ | grep xen
S96xencommons
S98xend
S99xendomains
------------------------------- snip ---------------------

------------------ chkconfig runlevels ---------------

xencommons      0:off   1:off   2:on    3:on    4:on    5:on    6:off
xend            0:off   1:off   2:off   3:on    4:on    5:on    6:off
xendomains      0:off   1:off   2:off   3:on    4:on    5:on    6:off
------------------ snip -------------------------

then
for i in xencommons xend xendomains; do
chkconfig --add $i
done

You will get xenbus_dev_shutdown errors unless you populate with at least one 
domU

/etc/xen/auto

The reason for the error is no lockfile is written to 

/var/lock/subsys/

So if you test be shell commands only, you get these errors on shutdown.


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