[Libvir] Remotely starting a fully-virtualized guest
Meng Kuan
mengkuan at gmail.com
Mon Sep 24 12:12:57 UTC 2007
On 24 Sep 2007, at 7:49 PM, Richard W.M. Jones wrote:
> Meng Kuan wrote:
>> Hi,
>> I am trying to start a fully virtualized guest called "full1"
>> remotely. The connection URI I am using is "xen+ssh://
>> root at dell1/". (Note that I am able to start/stop/resume/shutdown
>> para-virtualized guests without any problems with this connection
>> URI.)
>> The XML definition for the fully virtualized guest is this:
>> <domain type='xen'>
>> <name>full1</name>
>> <os>
>> <type>hvm</type>
>> <loader>/usr/lib/xen/boot/hvmloader</loader>
>> <boot dev='hd'/>
>> </os>
>> <memory>1048576</memory>
>> <vcpu>2</vcpu>
>> <on_poweroff>destroy</on_poweroff>
>> <on_reboot>restart</on_reboot>
>> <on_crash>restart</on_crash>
>> <features>
>> <acpi/>
>> <apic/>
>> <pae/>
>> </features>
>> <clock offset='utc'/>
>> <devices>
>> <emulator>/usr/lib64/xen/bin/qemu-dm</emulator>
>> <interface type='bridge'>
>> <source bridge='xenbr0'/>
>> <script path='vif-bridge'/>
>> </interface>
>> <disk type='file' device='disk'>
>> <driver name='file'/>
>> <source file='/xen/full1.img'/>
>> <target dev='hda'/>
>> </disk>
>> <graphics type='vnc' port='5904'/>
>> </devices>
>> </domain>
>> The guest failed to start up and this is what I found in the
>> xend.log file:
>> [2007-09-24 18:55:46 xend.XendDomainInfo 4176] DEBUG
>> (XendDomainInfo:190) XendDomainInfo.create(['vm', ['name', 'full1']
>> , ['memory', '1024'], ['maxmem', '1024'], ['vcpus', '2'],
>> ['on_poweroff', 'destroy'], ['on_reboot', 'restart'], ['on_crash
>> ', 'restart'], ['image', ['hvm', ['kernel', '/usr/lib/xen/boot/
>> hvmloader'], ['device_model', '/usr/lib64/xen/bin/qemu-dm
>> '], ['vcpus', '2'], ['boot', 'c'], ['acpi', '1'], ['apic', '1'],
>> ['pae', '1'], ['usb', '1'], ['vnc', '1'], ['vncdisplay'
>> , '4']]], ['device', ['vbd', ['dev', 'hda:disk'], ['uname', 'file:/
>> xen/full1.img'], ['mode', 'w']]], ['device', ['vif',
>> ['bridge', 'xenbr0'], ['script', 'vif-bridge'], ['type', 'ioemu']]]])
>> [2007-09-24 18:55:46 xend.XendDomainInfo 4176] DEBUG
>> (XendDomainInfo:296) parseConfig: config is ['vm', ['name', 'full1'
>> ], ['memory', '1024'], ['maxmem', '1024'], ['vcpus', '2'],
>> ['on_poweroff', 'destroy'], ['on_reboot', 'restart'], ['on_cras
>> h', 'restart'], ['image', ['hvm', ['kernel', '/usr/lib/xen/boot/
>> hvmloader'], ['device_model', '/usr/lib64/xen/bin/qemu-d
>> m'], ['vcpus', '2'], ['boot', 'c'], ['acpi', '1'], ['apic', '1'],
>> ['pae', '1'], ['usb', '1'], ['vnc', '1'], ['vncdisplay
>> ', '4']]], ['device', ['vbd', ['dev', 'hda:disk'], ['uname',
>> 'file:/xen/full1.img'], ['mode', 'w']]], ['device', ['vif',
>> ['bridge', 'xenbr0'], ['script', 'vif-bridge'], ['type', 'ioemu']]]]
>> [2007-09-24 18:55:46 xend.XendDomainInfo 4176] DEBUG
>> (XendDomainInfo:397) parseConfig: result is {'shadow_memory': None,
>> 'start_time': None, 'uuid': None, 'on_crash': 'restart',
>> 'on_reboot': 'restart', 'localtime': None, 'image': ['hvm', ['
>> kernel', '/usr/lib/xen/boot/hvmloader'], ['device_model', '/usr/
>> lib64/xen/bin/qemu-dm'], ['vcpus', '2'], ['boot', 'c'],
>> ['acpi', '1'], ['apic', '1'], ['pae', '1'], ['usb', '1'], ['vnc',
>> '1'], ['vncdisplay', '4']], 'on_poweroff': 'destroy',
>> 'bootloader_args': None, 'cpus': None, 'name': 'full1', 'backend':
>> [], 'vcpus': 2, 'cpu_weight': None, 'features': None,
>> 'vcpu_avail': None, 'memory': 768, 'device': [('vbd', ['vbd',
>> ['dev', 'hda:disk'], ['uname', 'file:/xen/full1.img'], ['
>> mode', 'w']]), ('vif', ['vif', ['bridge', 'xenbr0'], ['script',
>> 'vif-bridge'], ['type', 'ioemu']])], 'bootloader': None,
>> 'cpu': None, 'maxmem': 768}
>> [2007-09-24 18:55:46 xend.XendDomainInfo 4176] DEBUG
>> (XendDomainInfo:1264) XendDomainInfo.construct: None
>> [2007-09-24 18:55:46 xend.XendDomainInfo 4176] DEBUG
>> (XendDomainInfo:1296) XendDomainInfo.initDomain: 91 1.0
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: boot, val: c
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: fda, val:
>> None
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: fdb, val:
>> None
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: soundhw,
>> val: None
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: localtime,
>> val: None
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: serial,
>> val: None
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: std-vga,
>> val: None
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: isa, val:
>> None
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: vcpus, val: 2
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: acpi, val: 1
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: usb, val: 1
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: usbdevice,
>> val: None
>> [2007-09-24 18:55:46 xend 4176] DEBUG (image:329) args: k, val: None
>> [2007-09-24 18:55:46 xend.XendDomainInfo 4176] ERROR
>> (XendDomainInfo:202) Domain construction failed
>> Traceback (most recent call last):
>> File "/usr/lib64/python2.4/site-packages/xen/xend/
>> XendDomainInfo.py", line 195, in create
>> vm.initDomain()
>> File "/usr/lib64/python2.4/site-packages/xen/xend/
>> XendDomainInfo.py", line 1309, in initDomain
>> self.info['device'])
>> File "/usr/lib64/python2.4/site-packages/xen/xend/image.py",
>> line 45, in create
>> return findImageHandlerClass(imageConfig)(vm, imageConfig,
>> deviceConfig)
>> File "/usr/lib64/python2.4/site-packages/xen/xend/image.py",
>> line 75, in __init__
>> self.configure(imageConfig, deviceConfig)
>> File "/usr/lib64/python2.4/site-packages/xen/xend/image.py",
>> line 272, in configure
>> self.dmargs += self.configVNC(imageConfig)
>> File "/usr/lib64/python2.4/site-packages/xen/xend/image.py",
>> line 383, in configVNC
>> ret += ['-vnc', '%d' % vncdisplay]
>> TypeError: int argument required
>> [2007-09-24 18:55:46 xend.XendDomainInfo 4176] DEBUG
>> (XendDomainInfo:1463) XendDomainInfo.destroy: domid=91
>> [2007-09-24 18:55:46 xend.XendDomainInfo 4176] DEBUG
>> (XendDomainInfo:1471) XendDomainInfo.destroyDomain(91)
>> [2007-09-24 18:55:46 xend 4176] ERROR (SrvBase:88) Request create
>> failed.
>> Traceback (most recent call last):
>> File "/usr/lib64/python2.4/site-packages/xen/web/SrvBase.py",
>> line 85, in perform
>> return op_method(op, req)
>> File "/usr/lib64/python2.4/site-packages/xen/xend/server/
>> SrvDomainDir.py", line 82, in op_create
>> raise XendError("Error creating domain: " + str(ex))
>> XendError: Error creating domain: int argument required
>> It seems that xend got a string instead of an integer for the vnc
>> port.
>> I modified the file "image.py" at line 383 from this
>> ret += ['-vnc', '%d' % vncdisplay]
>> to this:
>> ret += ['-vnc', '%s' % vncdisplay]
>> Restarted xend for the change to take effect and then try starting
>> the guest again. This time the guest gets created but its state
>> does not change to "running".
>> # xm list
>> Name ID Mem(MiB) VCPUs
>> State Time(s)
>> Domain-0 0 451 2
>> r----- 356.7
>> full1 88 773 1
>> ------ 0.0
>> I removed the following vnc line from the xml definition and try
>> again:
>> <graphics type='vnc' port='5904'/>
>> The guest gets created but again its state is not "running".
>> According to xml format documentation the <graphics> tag is required.
>> At this point I am stumped. Any ideas what else I can try?
>
> I think this is an instance of bug: https://bugzilla.redhat.com/
> show_bug.cgi?id=279581
>
> Can you try the patch in that bug please (it fixed the problem for
> me).
>
The patch seems to be for Xen 3.1.0.
I upgraded libvirt (to 0.3.2) but not Xen itself.
virsh # version
Compiled against library: libvir 0.3.2
Using library: libvir 0.3.2
Using API: Xen 3.0.1
Running hypervisor: Xen 3.0.0
Will try upgrading to latest Xen version and try again. Thanks!
cheers,
mengkuan
More information about the libvir-list
mailing list