[CentOS-virt] Domain0 with Kernel 2.6.18-92.1.22.el5xen fails to boot Guests with Kernel 2.6.18-164.el5xen

Sun Sep 27 22:32:12 UTC 2009
Devraj Mukherjee <devraj at gmail.com>

Hi Pasi,

On Sun, Sep 27, 2009 at 8:21 PM, Pasi Kärkkäinen <pasik at iki.fi> wrote:
> On Sun, Sep 27, 2009 at 12:46:46PM +1000, Devraj Mukherjee wrote:
>> Hi all,
>>
>> I am in a bit of a fix here, I have several Guests paravirtualized
>> running on a Dom0 that is currently running the 2.6.18-92.1.22.el5xen
>> Kernel. All my guests (administered by different people) have
>> subsequently been updated to later versions of the kernel (namely
>> 2.6.18-164.el5xen or 2.6.18-128.4.1.el5xen).
>>
>> Ones that are still running are using the Kernel 2.6.18-128.4.1.el5xen
>> while Dom0 is still booted up into 2.6.18-92.1.22.el5xen
>>
>> I restarted a Guest that's now trying to boot with the
>> 2.6.18-164.el5xen Kernel and it spits out messages like
>> XENBUS: Waiting for devices to initialise: 295s...290s...
>>
>> and eventually reboots.
>>
>> If I try and interrupt the boot and choose a previous version of the
>> Kernel on the Guest, it says the following and fails to boot. The
>> guests use a single disk image that has the SWAP and Root partitions.
>>
>> Is this happening because the version of the kernel on the Dom0 is way
>> too old for guests to boot? I am just a bit hesitant in rebooting my
>> server for the new kernel to take effect unless I am sure :)
>>
>
> No, that shouldn't be the reason.
>
> The layer between dom0 and guests is Xen hypervisor, not the kernel.
> Although Redhat ships the hypervisor in the same rpm as the kernel :)
>

That's what I thought as well. I did however find the following post
while searching for answers
http://lists.centos.org/pipermail/centos/2008-January/049757.html

That outlines something similar to what I am experiencing and
indicates a reboot of the Dom0 fixed it. I am guessing this is because
of Kernel + Driver loading issues.

> The output looks like the initrd image is broken; it doesn't set up the root
> device.. does it load the xenblk driver? Does it detect the xvd* disks?
>

Is xenblk supposed to be loaded on Dom0?

> Please paste the full domU kernel boot log..
>

The following is my Dom0 xend.log

[2009-09-28 07:48:38 xend 19091] INFO (SrvDaemon:283) Xend Daemon started
[2009-09-28 07:48:38 xend 19091] INFO (SrvDaemon:287) Xend changeset:
unavailable.
[2009-09-28 07:48:38 xend 3549] INFO (SrvDaemon:190) Xend stopped due
to signal 15.
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:222) XendDomainInfo.recreate({'paused': 0, 'cpu_time':
144612597591622L, 'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0,
'dying': 0, 'mem_kb': 1047748L, 'domid': 0, 'max_vcpu_id': 7,
'crashed': 0, 'running': 1, 'maxmem_kb': 17179869180L, 'shutdown': 0,
'online_vcpus': 8, 'handle': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0], 'blocked': 0})
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] INFO
(XendDomainInfo:234) Recreating domain 0, UUID
00000000-0000-0000-0000-000000000000.
[2009-09-28 07:48:38 xend 19091] DEBUG (XendDomain:163) number of
vcpus to use is 0
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:222) XendDomainInfo.recreate({'paused': 0, 'cpu_time':
649872953225837L, 'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0,
'dying': 0, 'mem_kb': 716584L, 'domid': 11, 'max_vcpu_id': 3,
'crashed': 0, 'running': 0, 'maxmem_kb': 716800L, 'shutdown': 0,
'online_vcpus': 4, 'handle': [158, 197, 14, 207, 118, 131, 228, 14,
11, 141, 80, 155, 130, 15, 78, 19], 'blocked': 1})
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] INFO
(XendDomainInfo:234) Recreating domain 11, UUID
9ec50ecf-7683-e40e-0b8d-509b820f4e13.
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:222) XendDomainInfo.recreate({'paused': 0, 'cpu_time':
31557343513225L, 'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0,
'dying': 0, 'mem_kb': 614220L, 'domid': 15, 'max_vcpu_id': 0,
'crashed': 0, 'running': 0, 'maxmem_kb': 614400L, 'shutdown': 0,
'online_vcpus': 1, 'handle': [205, 119, 123, 10, 116, 195, 147, 157,
102, 33, 48, 200, 229, 25, 31, 67], 'blocked': 1})
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] INFO
(XendDomainInfo:234) Recreating domain 15, UUID
cd777b0a-74c3-939d-6621-30c8e5191f43.
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:222) XendDomainInfo.recreate({'paused': 0, 'cpu_time':
439665875780158L, 'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0,
'dying': 0, 'mem_kb': 1433392L, 'domid': 19, 'max_vcpu_id': 3,
'crashed': 0, 'running': 0, 'maxmem_kb': 1433600L, 'shutdown': 0,
'online_vcpus': 4, 'handle': [5, 72, 139, 170, 228, 55, 87, 82, 223,
36, 98, 155, 30, 97, 160, 1], 'blocked': 1})
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] INFO
(XendDomainInfo:234) Recreating domain 19, UUID
05488baa-e437-5752-df24-629b1e61a001.
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:222) XendDomainInfo.recreate({'paused': 0, 'cpu_time':
46317871738603L, 'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0,
'dying': 0, 'mem_kb': 1048340L, 'domid': 20, 'max_vcpu_id': 3,
'crashed': 0, 'running': 0, 'maxmem_kb': 1048576L, 'shutdown': 0,
'online_vcpus': 4, 'handle': [30, 213, 122, 77, 195, 98, 64, 180, 114,
126, 54, 154, 27, 216, 152, 159], 'blocked': 1})
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] INFO
(XendDomainInfo:234) Recreating domain 20, UUID
1ed57a4d-c362-40b4-727e-369a1bd8989f.
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:222) XendDomainInfo.recreate({'paused': 0, 'cpu_time':
39789190060430L, 'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0,
'dying': 0, 'mem_kb': 818976L, 'domid': 23, 'max_vcpu_id': 3,
'crashed': 0, 'running': 0, 'maxmem_kb': 819200L, 'shutdown': 0,
'online_vcpus': 4, 'handle': [32, 236, 171, 210, 127, 13, 153, 208,
190, 42, 45, 92, 227, 168, 64, 150], 'blocked': 1})
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] INFO
(XendDomainInfo:234) Recreating domain 23, UUID
20ecabd2-7f0d-99d0-be2a-2d5ce3a84096.
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:222) XendDomainInfo.recreate({'paused': 0, 'cpu_time':
50167261004541L, 'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0,
'dying': 0, 'mem_kb': 1048392L, 'domid': 24, 'max_vcpu_id': 3,
'crashed': 0, 'running': 0, 'maxmem_kb': 1048576L, 'shutdown': 0,
'online_vcpus': 4, 'handle': [158, 249, 96, 169, 101, 191, 89, 222,
50, 232, 66, 187, 99, 247, 51, 94], 'blocked': 1})
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] INFO
(XendDomainInfo:234) Recreating domain 24, UUID
9ef960a9-65bf-59de-32e8-42bb63f7335e.
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:222) XendDomainInfo.recreate({'paused': 0, 'cpu_time':
17188583788408L, 'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0,
'dying': 0, 'mem_kb': 946040L, 'domid': 25, 'max_vcpu_id': 3,
'crashed': 0, 'running': 0, 'maxmem_kb': 946176L, 'shutdown': 0,
'online_vcpus': 4, 'handle': [43, 153, 55, 197, 66, 189, 21, 17, 17,
147, 2, 101, 15, 21, 17, 36], 'blocked': 1})
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] INFO
(XendDomainInfo:234) Recreating domain 25, UUID
2b9937c5-42bd-1511-1193-02650f151124.
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-09-28 07:48:38 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-09-28 07:48:38 xend 19091] INFO (SrvServer:116) unix
path=/var/lib/xend/xend-socket
[2009-09-28 07:49:11 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:200) XendDomainInfo.create(['vm', ['name', 'svn'],
['memory', '512'], ['on_reboot', 'restart'], ['on_crash', 'restart'],
['vcpus', 4], ['bootloader', '/usr/bin/pygrub'], ['image', ['linux',
['ramdisk', '/var/lib/xen/boot_ramdisk.3XC1Fl'], ['kernel',
'/var/lib/xen/boot_kernel.RfjOtc'], ['args', 'ro
root=/dev/VolGroup00/LogVol00 console=xvc0']]], ['device', ['tap',
['uname', 'tap:aio:/srv/xen/svn.img'], ['dev', 'xvda'], ['mode',
'w']]], ['device', ['vif', ['bridge', 'xenbr0']]]])
[2009-09-28 07:49:11 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:312) parseConfig: config is ['vm', ['name', 'svn'],
['memory', '512'], ['on_reboot', 'restart'], ['on_crash', 'restart'],
['vcpus', 4], ['bootloader', '/usr/bin/pygrub'], ['image', ['linux',
['ramdisk', '/var/lib/xen/boot_ramdisk.3XC1Fl'], ['kernel',
'/var/lib/xen/boot_kernel.RfjOtc'], ['args', 'ro
root=/dev/VolGroup00/LogVol00 console=xvc0']]], ['device', ['tap',
['uname', 'tap:aio:/srv/xen/svn.img'], ['dev', 'xvda'], ['mode',
'w']]], ['device', ['vif', ['bridge', 'xenbr0']]]]
[2009-09-28 07:49:11 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:417) parseConfig: result is {'shadow_memory': None,
'start_time': None, 'uuid': None, 'on_crash': 'restart', 'on_reboot':
'restart', 'localtime': None, 'image': ['linux', ['ramdisk',
'/var/lib/xen/boot_ramdisk.3XC1Fl'], ['kernel',
'/var/lib/xen/boot_kernel.RfjOtc'], ['args', 'ro
root=/dev/VolGroup00/LogVol00 console=xvc0']], 'on_poweroff': None,
'bootloader_args': None, 'cpus': None, 'name': 'svn', 'backend': [],
'vcpus': 4, 'cpu_weight': None, 'features': None, 'vcpu_avail': None,
'memory': 512, 'device': [('tap', ['tap', ['uname',
'tap:aio:/srv/xen/svn.img'], ['dev', 'xvda'], ['mode', 'w']]), ('vif',
['vif', ['bridge', 'xenbr0']])], 'bootloader': '/usr/bin/pygrub',
'cpu': None, 'maxmem': None}
[2009-09-28 07:49:11 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1427) XendDomainInfo.construct: None
[2009-09-28 07:49:11 xend 19091] DEBUG (balloon:143) Balloon: 574488
KiB free; need 2048; done.
[2009-09-28 07:49:11 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1475) XendDomainInfo.initDomain: 63 1.0
[2009-09-28 07:49:11 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1514) _initDomain:shadow_memory=0x0, maxmem=0x200,
memory=0x200.
[2009-09-28 07:49:11 xend 19091] DEBUG (balloon:143) Balloon: 574480
KiB free; need 524288; done.
[2009-09-28 07:49:11 xend 19091] INFO (image:137) buildDomain os=linux
dom=63 vcpus=4
[2009-09-28 07:49:11 xend 19091] DEBUG (image:206) domid          = 63
[2009-09-28 07:49:11 xend 19091] DEBUG (image:207) memsize        = 512
[2009-09-28 07:49:11 xend 19091] DEBUG (image:208) image          =
/var/lib/xen/boot_kernel.RfjOtc
[2009-09-28 07:49:11 xend 19091] DEBUG (image:209) store_evtchn   = 1
[2009-09-28 07:49:11 xend 19091] DEBUG (image:210) console_evtchn = 2
[2009-09-28 07:49:11 xend 19091] DEBUG (image:211) cmdline        =
ro root=/dev/VolGroup00/LogVol00 console=xvc0
[2009-09-28 07:49:11 xend 19091] DEBUG (image:212) ramdisk        =
/var/lib/xen/boot_ramdisk.3XC1Fl
[2009-09-28 07:49:11 xend 19091] DEBUG (image:213) vcpus          = 4
[2009-09-28 07:49:11 xend 19091] DEBUG (image:214) features       =
[2009-09-28 07:49:11 xend 19091] DEBUG (blkif:27) exception looking up
device number for xvda: [Errno 2] No such file or directory:
'/dev/xvda'
[2009-09-28 07:49:11 xend 19091] DEBUG (blkif:27) exception looking up
device number for xvda: [Errno 2] No such file or directory:
'/dev/xvda'
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:110)
DevController: writing {'virtual-device': '51712', 'device-type':
'disk', 'protocol': 'x86_64-abi', 'backend-id': '0', 'state': '1',
'backend': '/local/domain/0/backend/tap/63/51712'} to
/local/domain/63/device/vbd/51712.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:112)
DevController: writing {'domain': 'svn', 'frontend':
'/local/domain/63/device/vbd/51712', 'format': 'raw', 'dev': 'xvda',
'state': '1', 'params': 'aio:/srv/xen/svn.img', 'mode': 'w', 'online':
'1', 'frontend-id': '63', 'type': 'tap'} to
/local/domain/0/backend/tap/63/51712.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:110)
DevController: writing {'mac': '00:16:3e:0d:86:28', 'handle': '0',
'protocol': 'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend':
'/local/domain/0/backend/vif/63/0'} to /local/domain/63/device/vif/0.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:112)
DevController: writing {'bridge': 'xenbr0', 'domain': 'svn', 'handle':
'0', 'script': '/etc/xen/scripts/vif-bridge', 'state': '1',
'frontend': '/local/domain/63/device/vif/0', 'mac':
'00:16:3e:0d:86:28', 'online': '1', 'frontend-id': '63'} to
/local/domain/0/backend/vif/63/0.
[2009-09-28 07:49:11 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:797) Storing VM details: {'shadow_memory': '0',
'uuid': '6ce0a479-9e75-5767-5f7b-4bf325aac895', 'on_reboot':
'restart', 'start_time': '1254088151.53', 'on_poweroff': 'destroy',
'name': 'svn', 'xend/restart_count': '0', 'vcpus': '4', 'vcpu_avail':
'15', 'memory': '512', 'on_crash': 'restart', 'image': "(linux
(ramdisk /var/lib/xen/boot_ramdisk.3XC1Fl) (kernel
/var/lib/xen/boot_kernel.RfjOtc) (args 'ro
root=/dev/VolGroup00/LogVol00 console=xvc0'))", 'maxmem': '512'}
[2009-09-28 07:49:11 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:832) Storing domain details: {'console/ring-ref':
'425496', 'console/port': '2', 'cpu/3/availability': 'online', 'name':
'svn', 'console/limit': '1048576', 'cpu/2/availability': 'online',
'vm': '/vm/6ce0a479-9e75-5767-5f7b-4bf325aac895', 'domid': '63',
'cpu/0/availability': 'online', 'memory/target': '524288',
'store/ring-ref': '372349', 'cpu/1/availability': 'online',
'store/port': '1'}
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:154) Waiting for
devices vif.
[2009-09-28 07:49:11 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:160) Waiting for 0.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:496)
hotplugStatusCallback /local/domain/0/backend/vif/63/0/hotplug-status.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:496)
hotplugStatusCallback /local/domain/0/backend/vif/63/0/hotplug-status.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:510)
hotplugStatusCallback 1.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:154) Waiting for
devices usb.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:154) Waiting for
devices vbd.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:154) Waiting for
devices irq.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:154) Waiting for
devices vkbd.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:154) Waiting for
devices vfb.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:154) Waiting for
devices pci.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:154) Waiting for
devices ioports.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:154) Waiting for
devices tap.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:160) Waiting for 51712.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:496)
hotplugStatusCallback
/local/domain/0/backend/tap/63/51712/hotplug-status.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:510)
hotplugStatusCallback 1.
[2009-09-28 07:49:11 xend 19091] DEBUG (DevController:154) Waiting for
devices vtpm.
[2009-09-28 07:49:11 xend 19091] INFO (XendDomain:380) Domain svn (63) unpaused.
[2009-09-28 07:49:32 xend.XendDomainInfo 19091] DEBUG
(XendDomainInfo:1637) XendDomainInfo.destroy: domid=63


and this is my boot log for the DomU

Using config file "/etc/xen/svn".
Started domain svn
Bootdata ok (command line is  ro root=/dev/VolGroup00/LogVol00 console=xvc0)
Linux version 2.6.18-164.el5xen (mockbuild at builder10.centos.org) (gcc
version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Thu Sep 3 04:03:03
EDT 2009
BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 0000000020800000 (usable)
No mptable found.
Built 1 zonelists.  Total pages: 133120
Kernel command line:  ro root=/dev/VolGroup00/LogVol00 console=xvc0
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 32768 bytes)
Xen reported: 2493.748 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
Software IO TLB disabled
Memory: 499456k/532480k available (2490k kernel code, 24144k reserved,
1388k data, 184k init)
Calibrating delay using timer specific routine.. 6238.93 BogoMIPS (lpj=12477871)
Security Framework v1.0.0 initialized
SELinux:  Initializing.
selinux_register_security:  Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 256
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 6144K
CPU: Physical Processor ID: 1
CPU: Processor Core ID: 2
(SMP-)alternatives turned off
Brought up 1 CPUs
checking if image is initramfs... it is
Grant table initialized
NET: Registered protocol family 16
Initializing CPU#1
migration_cost=1186
Initializing CPU#2
migration_cost=1186
migration_cost=Initializing CPU#3
1186
Brought up 4 CPUs
PCI: setting up Xen PCI frontend stub
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled
xen_mem: Initialising balloon driver.
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: System does not support PCI
PCI: System does not support PCI
NetLabel: Initializing
NetLabel:  domain hash size = 128
NetLabel:  protocols = UNLABELED CIPSOv4
NetLabel:  unlabeled traffic allowed by default
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 6, 262144 bytes)
TCP established hash table entries: 131072 (order: 9, 2097152 bytes)
TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
audit: initializing netlink socket (disabled)
type=2000 audit(1254090517.635:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
Initializing Cryptographic API
alg: No test for crc32c (crc32c-generic)
ksign: Installing public key data
Loading keyring
- Added public key 57F09578A977B70E
- User ID: CentOS (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
rtc: IRQ 8 is not free.
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
brd: module loaded
Xen virtual console successfully installed as xvc0
Bootdata ok (command line is  ro root=/dev/VolGroup00/LogVol00 console=xvc0)
Linux version 2.6.18-164.el5xen (mockbuild at builder10.centos.org) (gcc
version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Thu Sep 3 04:03:03
EDT 2009
BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 0000000020800000 (usable)
No mptable found.
Built 1 zonelists.  Total pages: 133120
Kernel command line:  ro root=/dev/VolGroup00/LogVol00 console=xvc0
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 32768 bytes)
Xen reported: 2493.748 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
Software IO TLB disabled
Memory: 499456k/532480k available (2490k kernel code, 24144k reserved,
1388k data, 184k init)
Calibrating delay using timer specific routine.. 6238.93 BogoMIPS (lpj=12477871)
Security Framework v1.0.0 initialized
SELinux:  Initializing.
selinux_register_security:  Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 256
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 6144K
CPU: Physical Processor ID: 1
CPU: Processor Core ID: 2
(SMP-)alternatives turned off
Brought up 1 CPUs
checking if image is initramfs... it is
Grant table initialized
NET: Registered protocol family 16
Initializing CPU#1
migration_cost=1186
Initializing CPU#2
migration_cost=1186
migration_cost=Initializing CPU#3
1186
Brought up 4 CPUs
PCI: setting up Xen PCI frontend stub
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled
xen_mem: Initialising balloon driver.
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: System does not support PCI
PCI: System does not support PCI
NetLabel: Initializing
NetLabel:  domain hash size = 128
NetLabel:  protocols = UNLABELED CIPSOv4
NetLabel:  unlabeled traffic allowed by default
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 6, 262144 bytes)
TCP established hash table entries: 131072 (order: 9, 2097152 bytes)
TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
audit: initializing netlink socket (disabled)
type=2000 audit(1254090517.635:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
Initializing Cryptographic API
alg: No test for crc32c (crc32c-generic)
ksign: Installing public key data
Loading keyring
- Added public key 57F09578A977B70E
- User ID: CentOS (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
rtc: IRQ 8 is not free.
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
brd: module loaded
Xen virtual console successfully installed as xvc0
Event-channel device installed.
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
ide-floppy driver 0.99.newide
usbcore: registered new driver hiddev
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
PNP: No PS/2 controller found. Probing ports directly.
i8042.c: No controller found.
mice: PS/2 mouse device common for all mice
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39
TCP bic registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
XENBUS: Device with no driver: device/vbd/51712
XENBUS: Device with no driver: device/vif/0
Initalizing network drop monitor service
Write protecting the kernel read-only data: 478k
Red Hat nash version 5.1.19.6 starting
Mounting proc filesystem
Mounting sysfs filesystem
Creating /dev
Creating initial device nodes
Setting up hotplug.
Creating block device nodes.
Loading ehci-hcd.ko module
Loading ohci-hcd.ko module
Loading uhci-hcd.ko module
USB Universal Host Controller Interface driver v3.0
Loading jbd.ko module
Loading ext3.ko module
Loading xenblk.ko module



-- 
"The secret impresses no-one, the trick you use it for is everything"
- Alfred Borden (The Prestiege)