Re: [Xen-users] best kernel

["Ian Tobin" <itobin@xxxxxxxxxxxxx>]

Sorry, where is that supposed to be run, in the DomU?



-----Original Message-----
From: Mark Pryor [mailto:tlviewer@xxxxxxxxx] 
Sent: 12 July 2012 22:36
To: Ian Tobin
Cc: xen-users
Subject: Re: [Xen-users] best kernel





----- Original Message -----
From: Ian Tobin <itobin@xxxxxxxxxxxxx>
To: Ian Campbell <ian.campbell@xxxxxxxxxx>; jacek burghardt
<jaceksburghardt@xxxxxxxxx>
Cc: xen-users <xen-users@xxxxxxxxxxxxx>
Sent: Thursday, July 12, 2012 1:30 PM
Subject: Re: [Xen-users] best kernel

Hi,

Just touching on this subject.

I have just compiled xen and kernel from sources (xen 4.1.2 and kernel
3.4.4) running on CentOS 6.3.

I have got the server up and running in XEN mode but am having problems
getting a para domU to boot from the kernel. I initially copied a domU
kernel (2.6.18-8) over from another server which has been running fine
for DomUs but the main OS is Debian.

When I run either the older kernel of newer kernel for DomU I get

xenbus waiting for devices to initialise 295s...290s

ive tried different variations using hda1, xvda1 etc but none seem to
work yet the 2.6.18-8 kernel works fine for DomUs on the Debian OS
server using hda1 as the root and all I have done is copied over the
domU config.

Any ideas?

Thanks

Ian

BTW I need to come back to the PV grub problem but that can wait.

-------------------------

The usual trouble with the latest vanilla kernel (unless make all xen
modules static) is to load the xen modules at startup.

------------- script ---------
cat>>/etc/rc.modules<<EOL
modprobe xen-gntdev
#
modprobe xen-evtchn
#
modprobe xen-gntalloc
#
modprobe xenfs
#
modprobe xen-pciback
#
modprobe xen-privcmd
#
modprobe xen-blkback
#
#xen-blkfront.ko
#xen-netfront.ko
#
modprobe xen-netback.ko
#
EOL
----------------- snip ------

Where the list of modules can be found like this:

find /lib/modules/$(uname -r) -name "xen*.ko" | grep -o "xen[^/]*\.ko$"
| sed "s/.ko$//"
^^or 3.4*

--
Mark



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