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[Xen-users] dom0 unable to launch domU

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] dom0 unable to launch domU
From: Olivier Bonvalet <olivier.bonvalet@xxxxxxxxx>
Date: Sat, 01 Aug 2009 12:44:56 +0200
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Hi,

I have a problem with a dom0 which is unable to launch my domU : all my dom0 are Debian Lenny amd64 with Debian kernel 2.6.26-2-xen-amd64 and xen-hypervisor-3.2-1-amd64. Then all domU (PV) are Debian Lenny amd64 too, with vanilla kernel 2.6.29.6.

So, this new dom0 can't launch any domU which are working on an other dom0. Software is same on both dom0, and hardware is near the same.

When I start the domU, I have this :
> root! nyrki:~# xm create /etc/xen/thundercat.cfg -c
> Using config file "/etc/xen/thundercat.cfg".
> Started domain thundercat

but the domU seem "freezed" : xm report a "r" status (it always stay in running status), and there is no error in logs. But console didn't show anything. I repeat, this domU works like a charm on an other dom0. I dry with LVM and DRBD storage, without success.

Have you an idea where can I found informations about why it is blocking ? Logs don't seem really usefull here. I put the content of xend.log about the last "xm create" :

[2009-08-01 12:32:21 3310] DEBUG (XendDomainInfo:84) XendDomainInfo.create(['vm', ['name', 'thundercat'], ['memory', '256'], ['on_poweroff', 'destroy'], ['on_reboot', 'restart'], ['on_crash', 'restart'], ['vcpus', 1], ['on_xend_start', 'ignore'], ['on_xend_stop', 'ignore'], ['image', ['linux', ['kernel', '/boot/vmlinuz-2.6.29.6-dae-xen']]], ['device', ['vbd', ['uname', ''], ['dev', 'xvda1'], ['mode', 'w']]], ['device', ['vif', ['ip', '91.121.*hidden*'], ['mac', '00:16:3E:3B:15:97']]]]) [2009-08-01 12:32:21 3310] DEBUG (XendDomainInfo:1618) XendDomainInfo.constructDomain [2009-08-01 12:32:21 3310] DEBUG (balloon:132) Balloon: 7754636 KiB free; need 2048; done.
[2009-08-01 12:32:21 3310] DEBUG (XendDomain:443) Adding Domain: 8
[2009-08-01 12:32:21 3310] DEBUG (XendDomainInfo:1703) XendDomainInfo.initDomain: 8 256 [2009-08-01 12:32:21 3310] DEBUG (XendDomainInfo:1738) _initDomain:shadow_memory=0x0, memory_static_max=0x10000000, memory_static_min=0x0. [2009-08-01 12:32:21 3310] DEBUG (balloon:132) Balloon: 7754628 KiB free; need 262144; done. [2009-08-01 12:32:21 3310] INFO (image:139) buildDomain os=linux dom=8 vcpus=1
[2009-08-01 12:32:21 3310] DEBUG (image:363) domid          = 8
[2009-08-01 12:32:21 3310] DEBUG (image:364) memsize        = 256
[2009-08-01 12:32:21 3310] DEBUG (image:365) image = /boot/vmlinuz-2.6.29.6-dae-xen
[2009-08-01 12:32:21 3310] DEBUG (image:366) store_evtchn   = 1
[2009-08-01 12:32:21 3310] DEBUG (image:367) console_evtchn = 2
[2009-08-01 12:32:21 3310] DEBUG (image:368) cmdline        =
[2009-08-01 12:32:21 3310] DEBUG (image:369) ramdisk        =
[2009-08-01 12:32:21 3310] DEBUG (image:370) vcpus          = 1
[2009-08-01 12:32:21 3310] DEBUG (image:371) features       =
[2009-08-01 12:32:21 3310] INFO (XendDomainInfo:1514) createDevice: vbd : {'uuid': '1cf74002-0a8f-7739-2456-dc91d9804a10', 'bootable': 1, 'driver': 'paravirtualised', 'dev': 'xvda1', 'uname': '', 'mode': 'w'} [2009-08-01 12:32:21 3310] DEBUG (DevController:118) DevController: writing {'virtual-device': '51713', 'device-type': 'disk', 'protocol': 'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend': '/local/domain/0/backend/vbd/8/51713'} to /local/domain/8/device/vbd/51713. [2009-08-01 12:32:21 3310] DEBUG (DevController:120) DevController: writing {'domain': 'thundercat', 'frontend': '/local/domain/8/device/vbd/51713', 'uuid': '1cf74002-0a8f-7739-2456-dc91d9804a10', 'dev': 'xvda1', 'state': '1', 'params': '', 'mode': 'w', 'online': '1', 'frontend-id': '8', 'type': ''} to /local/domain/0/backend/vbd/8/51713. [2009-08-01 12:32:21 3310] INFO (XendDomainInfo:1514) createDevice: vif : {'ip': '91.121.*hidden*', 'mac': '00:16:3E:3B:15:97', 'uuid': '37a0b119-90e8-f5bc-f9a9-590fa7d12816'} [2009-08-01 12:32:21 3310] DEBUG (DevController:118) DevController: writing {'mac': '00:16:3E:3B:15:97', 'handle': '0', 'protocol': 'x86_64-abi', 'backend-id': '0', 'state': '1', 'backend': '/local/domain/0/backend/vif/8/0'} to /local/domain/8/device/vif/0. [2009-08-01 12:32:21 3310] DEBUG (DevController:120) DevController: writing {'domain': 'thundercat', 'handle': '0', 'uuid': '37a0b119-90e8-f5bc-f9a9-590fa7d12816', 'script': '/etc/xen/scripts/vif-route', 'ip': '91.121.35.227', 'mac': '00:16:3E:3B:15:97', 'frontend-id': '8', 'state': '1', 'online': '1', 'frontend': '/local/domain/8/device/vif/0'} to /local/domain/0/backend/vif/8/0. [2009-08-01 12:32:21 3310] DEBUG (XendDomainInfo:2195) Storing VM details: {'on_xend_stop': 'ignore', 'shadow_memory': '0', 'uuid': '18411fde-e4f0-cd25-81ca-ab9a1034b632', 'on_reboot': 'restart', 'start_time': '1249122741.47', 'on_poweroff': 'destroy', 'on_xend_start': 'ignore', 'on_crash': 'restart', 'xend/restart_count': '0', 'vcpus': '1', 'vcpu_avail': '1', 'image': "(linux (kernel /boot/vmlinuz-2.6.29.6-dae-xen) (notes (HV_START_LOW 18446603336221196288) (FEATURES '!writable_page_tables|pae_pgdir_above_4gb') (VIRT_BASE 18446744071562067968) (GUEST_VERSION 2.6) (PADDR_OFFSET 0) (GUEST_OS linux) (HYPERCALL_PAGE 18446744071564201984) (LOADER generic) (SUSPEND_CANCEL 1) (PAE_MODE yes) (ENTRY 18446744071570776576) (XEN_VERSION xen-3.0)))", 'name': 'thundercat'} [2009-08-01 12:32:21 3310] DEBUG (XendDomainInfo:1008) Storing domain details: {'console/ring-ref': '2197081', 'image/entry': '18446744071570776576', 'console/port': '2', 'store/ring-ref': '2197082', 'image/loader': 'generic', 'vm': '/vm/18411fde-e4f0-cd25-81ca-ab9a1034b632', 'control/platform-feature-multiprocessor-suspend': '1', 'image/hv-start-low': '18446603336221196288', 'image/guest-os': 'linux', 'image/virt-base': '18446744071562067968', 'memory/target': '262144', 'image/guest-version': '2.6', 'image/pae-mode': 'yes', 'console/limit': '1048576', 'image/paddr-offset': '0', 'image/hypercall-page': '18446744071564201984', 'image/suspend-cancel': '1', 'cpu/0/availability': 'online', 'image/features/pae-pgdir-above-4gb': '1', 'image/features/writable-page-tables': '0', 'console/type': 'xenconsoled', 'name': 'thundercat', 'domid': '8', 'image/xen-version': 'xen-3.0', 'store/port': '1'} [2009-08-01 12:32:21 3310] DEBUG (DevController:118) DevController: writing {'protocol': 'x86_64-abi', 'state': '1', 'backend-id': '0', 'backend': '/local/domain/0/backend/console/8/0'} to /local/domain/8/device/console/0. [2009-08-01 12:32:21 3310] DEBUG (DevController:120) DevController: writing {'domain': 'thundercat', 'frontend': '/local/domain/8/device/console/0', 'uuid': 'eb30a42b-eedd-524e-f98b-4b5932bd1f48', 'frontend-id': '8', 'state': '1', 'location': '2', 'online': '1', 'protocol': 'vt100'} to /local/domain/0/backend/console/8/0. [2009-08-01 12:32:21 3310] DEBUG (XendDomainInfo:1092) XendDomainInfo.handleShutdownWatch [2009-08-01 12:32:21 3310] DEBUG (DevController:151) Waiting for devices vif.
[2009-08-01 12:32:21 3310] DEBUG (DevController:156) Waiting for 0.
[2009-08-01 12:32:21 3310] DEBUG (DevController:595) hotplugStatusCallback /local/domain/0/backend/vif/8/0/hotplug-status. [2009-08-01 12:32:21 3310] DEBUG (DevController:595) hotplugStatusCallback /local/domain/0/backend/vif/8/0/hotplug-status. [2009-08-01 12:32:21 3310] DEBUG (DevController:609) hotplugStatusCallback 1. [2009-08-01 12:32:21 3310] DEBUG (DevController:151) Waiting for devices vbd.
[2009-08-01 12:32:21 3310] DEBUG (DevController:156) Waiting for 51713.
[2009-08-01 12:32:21 3310] DEBUG (DevController:595) hotplugStatusCallback /local/domain/0/backend/vbd/8/51713/hotplug-status. [2009-08-01 12:32:21 3310] DEBUG (DevController:609) hotplugStatusCallback 1. [2009-08-01 12:32:21 3310] DEBUG (DevController:151) Waiting for devices irq. [2009-08-01 12:32:21 3310] DEBUG (DevController:151) Waiting for devices vkbd. [2009-08-01 12:32:21 3310] DEBUG (DevController:151) Waiting for devices vfb. [2009-08-01 12:32:21 3310] DEBUG (DevController:151) Waiting for devices console.
[2009-08-01 12:32:21 3310] DEBUG (DevController:156) Waiting for 0.
[2009-08-01 12:32:21 3310] DEBUG (DevController:151) Waiting for devices pci. [2009-08-01 12:32:21 3310] DEBUG (DevController:151) Waiting for devices ioports. [2009-08-01 12:32:21 3310] DEBUG (DevController:151) Waiting for devices tap. [2009-08-01 12:32:21 3310] DEBUG (DevController:151) Waiting for devices vtpm. [2009-08-01 12:32:21 3310] INFO (XendDomain:1165) Domain thundercat (8) unpaused.

Thanks,
Olivier

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