Re: [Xen-users] Booting issue on CentOS 5.2+Xen 3.3.0

[Boris Derzhavets <bderzhavets@xxxxxxxxx>]

***********************************************************************
To port Xen 3.3.1-rc4 e to xen disabled CentOS 5.2 instance (64 bit) install the most recent version of gitco and mercurial (hg).
***********************************************************************
# cd /usr/src/
# hg clone http://xenbits.xensource.com/xen-3.3-testing.hg
# cd xen-3.3-testing.hg
# make world
# make install
Determine the name of the Xen Linux kernel version that was installed.
# ls /lib/modules
There should be a directory for the Xen Linux kernel (e.g.2.6.18.8-xen)
Generate the module dependency list and map files
# /sbin/depmod 2.6.18.8-xen
Create the Xen initial ramdisk image
# /sbin/mkinitrd /boot/initrd-2.6.18.8-xen.img 2.6.18.8-xen
Disable tls
# mv /lib64/tls /lib64/tls.disabled
Set xend service to start
# /sbin/chkconfig –add xend
# /sbin/chkconfig xend on
Install bridge-utils:-
# yum install bridge-utils
************************************************************************
Edit /boot/grub/grub.conf and copy one of the existing boot entries
to make the required changes for Xen and reboot into new kernel.
*************************************************************************
title Xen-3.3.1 CentOS 5.2 x86_64 (2.6.18.8-xen) (/dev/sdb12)
root (hd1,11)
kernel /xen-3.3.gz
module /vmlinuz-2.6.18.8-xen ro root=/dev/VolGroup01/LogVol00 rhgb quiet
module /initrd-2.6.18.8-xen.img
**************************************************************************
View for details :-
http://lxer.com/module/newswire/view/112300/index.html

If you don't like clone , download from
http://www.xen.org/download/index.html
   Linux 2.6.18 with Xen 3.3 support source tarball
./install.sh should work like "make install"
But, personally, i haven't verified it.

--- On Mon, 1/5/09, David Gonzalez <dgonzalezh@xxxxxxxxx> wrote:

From: David Gonzalez <dgonzalezh@xxxxxxxxx>
Subject: [Xen-users] Booting issue on CentOS 5.2+Xen 3.3.0
To: xen-users@xxxxxxxxxxxxxxxxxxx
Date: Monday, January 5, 2009, 8:39 PM

Hello All,

 

I finally compiled xen 3.3.0 using make World, installed it but I cannot get it to Boot, I always get kernel panic, kernel not sync kind of errors, I suppose it’s some hard disk or partition issue, my setup is as follows.

 

CentOS 5.2 x86_64 on a HP ML-115

 

Grub, menu.list

 

Entries

 

CentOS xen’s line

 

title CentOS (2.6.18-92.1.22.el5xen)

        root (hd0,0)

        kernel /xen.gz-2.6.18-92.1.22.el5 dom0_mem=1.8G

        module /vmlinuz-2.6.18-92.1.22.el5xen ro root=LABEL=/ console=tty0 noreboot

        module /initrd-2.6.18-92.1.22.el5xen.img

 

My line

title Xen 3.0 / XenLinux 2.6

        root (hd0,0)

        kernel /xen-3.3.gz dom0_mem=1.8G

        module /vmlinuz-2.6.18.8-xen ro root=LABEL=/ console=tty0 noreboot

        module /initrd-2.6.18.8-xen.img

 

/boot is on a regular partition / is also outside LVM but it never works. mount says

 

[root@ut3 ~]# mount

/dev/hda2 on / type ext3 (rw,noatime)

proc on /proc type proc (rw)

sysfs on /sys type sysfs (rw)

devpts on /dev/pts type devpts (rw,gid=5,mode=620)

/dev/mapper/vg0-lvUsr on /usr type ext3 (rw,noatime)

/dev/mapper/vg0-lvSrc on /usr/src type ext3 (rw,noatime)

/dev/mapper/vg0-lvOpt on /opt type ext3 (rw,noatime)

/dev/mapper/vg0-lvVar on /var type ext3 (rw,noatime)

/dev/mapper/vg0-lvSpool on /var/spool type ext3 (rw,noatime)

/dev/mapper/vg0-lvLog on /var/log type ext3 (rw,noatime)

/dev/mapper/vg0-lvWww on /var/www type ext3 (rw,noatime)

/dev/mapper/vg0-lvHome on /home type ext3 (rw,noatime)

/dev/mapper/vg0-lvMirror on /vz type ext3 (rw,noatime)

/dev/mapper/vg0-lvLfs on /install type ext3 (rw,noatime)

/dev/hda1 on /boot type ext3 (rw,noatime)

tmpfs on /dev/shm type tmpfs (rw)

none on /tmp type tmpfs (rw)

none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)

sunrpc on /var/lib/nfs/rpc_pipefs type

 

As you see I have a LVM setup and regular lines work, but my own line following Xen docs, doesn’t I even created an initrd image as it works on stock CentOS kernels.

 

Everything compiled fine and installed too, please help me, I always have the same problem when I compile custom kernels, my system can never boot, may be I have to compile LVM support into the kernel rather than as Module.

 

Has anyone made this work with similar setups as mine?

 

Can anyone give me a lead, thanks.

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