Re: [Xen-users] Trying to get CentOS guest running, but xm cant find the kernel image.

[Jim Lynch <jim@xxxxxxxxxxxxxxxxxx>]

Jerry Amundson wrote:
> On 11/28/06, Henning Sprang <henning_sprang@xxxxxx> wrote:
>>
>> So now, this is your current problem - your initrd doesn't match the
>> Kernel you are trying to run. create an initrd for your xen kernel
>> with mkinitramfs or mkinitrd.
>
> This echoes my thoughts, also.
>
OK thanks guys.  I now have a initrd that was created successfully and
from what I can tell was accepted, only because I can't find a complaint
in the logs.  What was it that told you the initrd was the problem before?
I'm pretty much at the same point I was before.  I see Roland is
suffering from the same problem.  I'm wondering if these error messages
are an indication of the problem?

xenstore-read: couldn't read path backend/vbd/7/771/node
xenstore-read: couldn't read path backend/vbd/8/771/node

That's from the xen-hotplug.log file.  Or is this just a symptom of the
crashed domain?

I googled for the error but I didn't find any solutions. 

Here is my config again,

kernel = "/boot/vmlinuz-2.6.16.29-xenU"
ramdisk = "/boot/initrd-2.6.16.29-xenU.img"
memory = 256
name = "IServer"
vif = [ '' ]
disk = [ 'phy:VolGroup00/LogVol00,hda1,w' ]
disk = [ 'phy:VolGroup00/LogVol02,hda2,w' ]
disk = [ 'phy:hda7,hda7,w' ]
disk = [ 'phy:VolGroup00/LogVol01,hda3,w' ]
dhcp="dhcp"
root = "/dev/hda1 ro"
extra = "3"

Are there any debug flags or other ways I can get Xen to tell me more
about it's problem?

xend.log from initialization to crash

[2006-11-29 08:48:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:180)
XendDomainInfo.create(['vm', ['name', 'IServer'], ['memory', 256],
['root', '/dev/hda1 ro'], ['vcpus', 1], ['root', '/dev/hda1 ro'],
['image', ['linux', ['kernel', '/boot/vmlinuz-2.6.16.29-xenU'],
['ramdisk', '/boot/initrd-2.6.16.29-xenU.img'], ['ip',
':::::eth0:dhcp'], ['root', '/dev/hda1 ro'], ['args', '3']]], ['device',
['vbd', ['uname', 'phy:VolGroup00/LogVol01'], ['dev', 'hda3'], ['mode',
'w']]], ['device', ['vif']]])
[2006-11-29 08:48:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:286)
parseConfig: config is ['vm', ['name', 'IServer'], ['memory', 256],
['root', '/dev/hda1 ro'], ['vcpus', 1], ['root', '/dev/hda1 ro'],
['image', ['linux', ['kernel', '/boot/vmlinuz-2.6.16.29-xenU'],
['ramdisk', '/boot/initrd-2.6.16.29-xenU.img'], ['ip',
':::::eth0:dhcp'], ['root', '/dev/hda1 ro'], ['args', '3']]], ['device',
['vbd', ['uname', 'phy:VolGroup00/LogVol01'], ['dev', 'hda3'], ['mode',
'w']]], ['device', ['vif']]]
[2006-11-29 08:48:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:382)
parseConfig: result is {'ssidref': None, 'uuid': None, 'on_crash': None,
'on_reboot': None, 'localtime': None, 'image': ['linux', ['kernel',
'/boot/vmlinuz-2.6.16.29-xenU'], ['ramdisk',
'/boot/initrd-2.6.16.29-xenU.img'], ['ip', ':::::eth0:dhcp'], ['root',
'/dev/hda1 ro'], ['args', '3']], 'on_poweroff': None, 'cpus': None,
'name': 'IServer', 'backend': [], 'cpu': None, 'vcpus': 1, 'cpu_weight':
None, 'vcpu_avail': None, 'memory': 256, 'device': [('vbd', ['vbd',
['uname', 'phy:VolGroup00/LogVol01'], ['dev', 'hda3'], ['mode', 'w']]),
('vif', ['vif'])], 'bootloader': None, 'root': '/dev/hda1 ro',
'bootentry': None, 'maxmem': None}
[2006-11-29 08:48:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:1189)
XendDomainInfo.construct: None 0
[2006-11-29 08:48:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:1221)
XendDomainInfo.initDomain: 7 1.0
[2006-11-29 08:48:11 xend] DEBUG (balloon:136) Balloon: free 1764; need
257; done.
[2006-11-29 08:48:11 xend] INFO (image:136) buildDomain os=linux dom=7
vcpus=1
[2006-11-29 08:48:11 xend] DEBUG (image:174) dom            = 7
[2006-11-29 08:48:11 xend] DEBUG (image:175) image          =
/boot/vmlinuz-2.6.16.29-xenU
[2006-11-29 08:48:11 xend] DEBUG (image:176) store_evtchn   = 1
[2006-11-29 08:48:11 xend] DEBUG (image:177) console_evtchn = 2
[2006-11-29 08:48:11 xend] DEBUG (image:178) cmdline        = 
ip=:::::eth0:dhcp root=/dev/hda1 ro 3
[2006-11-29 08:48:11 xend] DEBUG (image:179) ramdisk        =
/boot/initrd-2.6.16.29-xenU.img
[2006-11-29 08:48:11 xend] DEBUG (image:180) vcpus          = 1
[2006-11-29 08:48:11 xend] DEBUG (image:181) features       =
[2006-11-29 08:48:11 xend] DEBUG (DevController:103) DevController:
writing {'virtual-device': '771', 'backend-id': '0', 'state': '1',
'backend': '/local/domain/0/backend/vbd/7/771'} to
/local/domain/7/device/vbd/771.
[2006-11-29 08:48:11 xend] DEBUG (DevController:105) DevController:
writing {'domain': 'IServer', 'frontend':
'/local/domain/7/device/vbd/771', 'dev': 'hda3', 'state': '1', 'params':
'VolGroup00/LogVol01', 'mode': 'w', 'frontend-id': '7', 'type': 'phy'}
to /local/domain/0/backend/vbd/7/771.
[2006-11-29 08:48:11 xend] DEBUG (DevController:103) DevController:
writing {'backend-id': '0', 'mac': '00:16:3e:64:b8:1c', 'handle': '0',
'state': '1', 'backend': '/local/domain/0/backend/vif/7/0'} to
/local/domain/7/device/vif/0.
[2006-11-29 08:48:11 xend] DEBUG (DevController:105) DevController:
writing {'mac': '00:16:3e:64:b8:1c', 'state': '1', 'handle': '0',
'script': '/etc/xen/scripts/vif-bridge', 'frontend-id': '7', 'domain':
'IServer', 'frontend': '/local/domain/7/device/vif/0'} to
/local/domain/0/backend/vif/7/0.
[2006-11-29 08:48:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:675)
Storing VM details: {'ssidref': '0', 'uuid':
'14d3f1f7-faf7-0178-d8f8-9d79fa893b64', 'on_reboot': 'restart',
'start_time': '1164808091.29', 'on_poweroff': 'destroy', 'name':
'IServer', 'vcpus': '1', 'vcpu_avail': '1', 'memory': '256', 'on_crash':
'restart', 'image': "(linux (kernel /boot/vmlinuz-2.6.16.29-xenU)
(ramdisk /boot/initrd-2.6.16.29-xenU.img) (ip :::::eth0:dhcp) (root
'/dev/hda1 ro') (args 3))", 'maxmem': '256'}
[2006-11-29 08:48:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:700)
Storing domain details: {'console/ring-ref': '55794', 'console/port':
'2', 'name': 'IServer', 'console/limit': '1048576', 'vm':
'/vm/14d3f1f7-faf7-0178-d8f8-9d79fa893b64', 'domid': '7',
'cpu/0/availability': 'online', 'memory/target': '262144',
'store/ring-ref': '55795', 'store/port': '1'}
[2006-11-29 08:48:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:881)
XendDomainInfo.handleShutdownWatch
[2006-11-29 08:48:11 xend] DEBUG (DevController:132) Waiting for devices
vif.
[2006-11-29 08:48:11 xend] DEBUG (DevController:138) Waiting for 0.
[2006-11-29 08:48:11 xend] DEBUG (DevController:403)
hotplugStatusCallback /local/domain/0/backend/vif/7/0/hotplug-status.
[2006-11-29 08:48:11 xend] DEBUG (DevController:403)
hotplugStatusCallback /local/domain/0/backend/vif/7/0/hotplug-status.
[2006-11-29 08:48:11 xend] DEBUG (DevController:417)
hotplugStatusCallback 1.
[2006-11-29 08:48:11 xend] DEBUG (DevController:132) Waiting for devices
usb.
[2006-11-29 08:48:11 xend] DEBUG (DevController:132) Waiting for devices
vbd.
[2006-11-29 08:48:11 xend] DEBUG (DevController:138) Waiting for 771.
[2006-11-29 08:48:11 xend] DEBUG (DevController:403)
hotplugStatusCallback /local/domain/0/backend/vbd/7/771/hotplug-status.
[2006-11-29 08:48:11 xend] DEBUG (DevController:403)
hotplugStatusCallback /local/domain/0/backend/vbd/7/771/hotplug-status.
[2006-11-29 08:48:11 xend] DEBUG (DevController:417)
hotplugStatusCallback 1.
[2006-11-29 08:48:11 xend] DEBUG (DevController:132) Waiting for devices
irq.
[2006-11-29 08:48:11 xend] DEBUG (DevController:132) Waiting for devices
pci.
[2006-11-29 08:48:11 xend] DEBUG (DevController:132) Waiting for devices
ioports.
[2006-11-29 08:48:11 xend] DEBUG (DevController:132) Waiting for devices
vtpm.
[2006-11-29 08:48:11 xend] INFO (XendDomain:363) Domain IServer (7)
unpaused.
[2006-11-29 08:48:11 xend.XendDomainInfo] WARNING (XendDomainInfo:823)
Domain has crashed: name=IServer id=7.
[2006-11-29 08:48:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:1364)
XendDomainInfo.destroyDomain(7)

~



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