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Re: [Xen-users] ntpd under Xen Dom0 exhibits extremely high jitter/nois

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-users] ntpd under Xen Dom0 exhibits extremely high jitter/noise? runs stable/quiet under non-xen kernel.
From: mail ignored <0.bugs.only.0@xxxxxxxxx>
Date: Fri, 15 Jan 2010 08:30:22 -0800
Cc: "Fajar A. Nugraha" <fajar@xxxxxxxxx>, Xen User-List <xen-users@xxxxxxxxxxxxxxxxxxx>
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On Fri, Jan 15, 2010 at 12:10 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> Run "depmod -a 2.6.18-164.10.1.el5.centos.plusxen".

i had run 'depmod -a', as i always do when building opensuse kernels,
with no effect.

i did not realize that "depmod -a 2.6.18-164.10.1.el5.centos.plusxen"
-- which works! -- was required. thanks.

sorry this is becoming a treatise on kernel-building, but i appreciate
the necessity to try to rule out xen ...

atm, i've extracted/installed from the centos rpm, as Fajar
instructed.  i've also run 'mkinitrd -f lvm2 -f md'

so now i have,

ls -al /boot/*el*
 -rw-r--r-- 1 root root   68951 2010-01-08 14:54
/boot/config-2.6.18-164.10.1.el5.centos.plusxen
 -rw-r--r-- 1 root root 8199432 2010-01-15 07:51
/boot/initrd-2.6.18-164.10.1.el5.centos.plusxen
 -rw-r--r-- 1 root root  116122 2010-01-08 14:55
/boot/symvers-2.6.18-164.10.1.el5.centos.plusxen.gz
 -rw-r--r-- 1 root root 1196044 2010-01-08 14:54
/boot/System.map-2.6.18-164.10.1.el5.centos.plusxen
 -rw-r--r-- 1 root root 2031384 2010-01-08 14:54
/boot/vmlinuz-2.6.18-164.10.1.el5.centos.plusxen
 -rw-r--r-- 1 root root  413719 2010-01-08 13:41
/boot/xen.gz-2.6.18-164.10.1.el5.centos.plus
 -rwxr-xr-x 1 root root  965728 2010-01-08 15:01
/boot/xen-syms-2.6.18-164.10.1.el5.centos.plus

i've setup grub, to use the
{vmlinuz,initrd}-2.6.18-164.10.1.el5.centos.plusxen.  at boot, i see
the hypervisor load, and the passoff to the centos kernel.  but it
then gets stuck in a loop, endlessly repeating "volume group VG0 not
found".

fwiw, "/boot" is on a linux native RAID-1 part, and "/" is on a LV on
a RAID-1.  of course, works fine @ boot to opensuse kernel(s).

what else do I need to get that centos kernel to boot my box?  Or is
the 2.6.18* too old for support of LVM, RAID, etc (i doubt that ...)?

thanks.

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