[Xen-cim] Python script problems, part 2 - known good scripts

["Szymanski, Lukasz K" <Lukasz.Szymanski@xxxxxxxxxx>]

-----Original Message-----
From: Jim Fehlig 
Sent: Thursday, June 14, 2007 3:04 PM
To: Szymanski, Lukasz K
Subject: Re: Some updates

I tried both python scripts with success.  The scripts have been tweaked
a little so here they are for your viewing pleasure :-).  I'm using a
xen 3.1.0 based system with latest provider code.  The xen code has
patches that were sent to xen-devel, but don't think any of them would
prevent these scripts from working.

We'll have to dig in if you're still having problems.

Jim

Szymanski, Lukasz K wrote:
>
> Jim -
>
> So here is an update:  I have two problems, possibly related.
>
> 1)
> I applied the patch you emailed
> I applied the latest from CIM
>
> As a result I get a request that starts, but never finishes executing.

> The RequestStateChange starts with no errors, but the script just sits

> there.  Xm list shows the vm at a 'bp' state.  If I crtl-C the script 
> and try to run it again, I cannot get past the initial 
> EnumerateInstanceNames at the beginning of the script.  I have to 
> ctrl-C openwbem.  It's as if there's a locking/spinning issue 
> somewhere.
>
> 2)
> In a possibly related story, I cannot get the embedded instance script

> to work either.  The setting he is looking for is CMPI_string or 
> CMPI_instance, but not getting it (see ERROR)
>
> If I use the pywbem which comes with my SUSE, I get this in the 
> openwbem output
> CMPIMethodProviderProxy::invokeMethod()
> [INFO] [06/13/2007 12:18:18] 17404 ---
> Xen_VirtualSystemManagementService.c(749) : Entering InvokeMethod() 
> [WARNING] [06/13/2007 12:18:18] 17404 ---
> Xen_VirtualSystemManagementService.c(750) : --- 
> self="methodXen_VirtualSystemManagementService"
>
> [WARNING] [06/13/2007 12:18:18] 17404 ---
> Xen_VirtualSystemManagementService.c(751) : --- context="** Object not

> recognized (0x0x43002310) **"
>
> [WARNING] [06/13/2007 12:18:18] 17404 ---
> Xen_VirtualSystemManagementService.c(752) : --- 
> reference="/root/cimv2:Xen_VirtualSystemManagementService.CreationClas
> sName="Xen_VirtualSystemManagementService",SystemName="1089",Name="Xen
> Hypervisor",SystemCreationClassName="CIM_ComputerSystem""
>
> [WARNING] [06/13/2007 12:18:18] 17404 ---
> Xen_VirtualSystemManagementService.c(753) : ---
methodname="DefineSystem"
> [WARNING] [06/13/2007 12:18:18] 17404 ---
> Xen_VirtualSystemManagementService.c(754) : --- namespace="root/cimv2"
> [WARNING] [06/13/2007 12:18:18] 17404 ---
> Xen_VirtualSystemManagementService.c(762) : --- # argsin=3 [ERROR] 
> [06/13/2007 12:18:18] 17404 ---
> Xen_VirtualSystemManagementService.c(827) : --- Invalid setting type -

> UNKNOWN [INFO] [06/13/2007 12:18:18] 17404 ---
> Xen_VirtualSystemManagementService.c(1076) : Exiting 
> InvokeMethod()=Failed [1124096320] XMLExecute::processSimpleReq caught

> CIM exception:
> Code: 4
> File: OW_CMPIMethodProviderProxy.cpp
>  Line: 106
> Message: invalid parameter passed to method (Invalid setting type)
>
> I thought maybe this was an outdated pywbem.  If I go to the latest 
> from sourceforge, this is the output I get from the embedded script.
>
> Calling DefineSystem to create a new VM ...
> Traceback (most recent call last):
>   File "inst_embed_test.py", line 66, in ?
>     (rval, out_params) = conn.InvokeMethod('DefineSystem', vsms[0],
> **in_params)
>   File
> "/usr/local/lib64/python2.4/site-packages/pywbem/cim_operations.py",
> line 763, in InvokeMethod
>     result = self.methodcall(MethodName, obj, **params)
>   File
> "/usr/local/lib64/python2.4/site-packages/pywbem/cim_operations.py",
> line 262, in methodcall
>     plist = [cim_xml.PARAMVALUE(x[0], paramvalue(x[1]),
paramtype(x[1]))
>   File
> "/usr/local/lib64/python2.4/site-packages/pywbem/cim_operations.py",
> line 260, in paramvalue
>     raise TypeError('Unsupported parameter type "%s"' % type(obj))
> TypeError: Unsupported parameter type "<type 'instance'>"
>
> -------------------------------
>
> If you have seen any of this before and have a fix, then please let me

> know.  What version is your Xen, SUSE, python, etc.?  Maybe I can work

> backwords from something that works.
>
> Thanks,
> Luke
>

#!/usr/bin/python

import sys
import pywbem
import time

# Connect to cimom
conn = pywbem.WBEMConnection('http://localhost', ('root', 'novell'))

# Get instance of Virtual System Management Service
print 'Looking for Virtual System Management Service...'
vsms = conn.EnumerateInstanceNames("Xen_VirtualSystemManagementService")
print 'Got Virtual System Management Service: %s' % str(vsms[0])


# Create virtual system settings for new VM
vssd = pywbem.CIMInstance('Xen_ComputerSystemSettingData',
        {'VirtualSystemIdentifier':'sles10_graphics',
         'VirtualSystemType':'xen-3.0-x86_32p',
         'Bootloader':'/usr/lib/xen/boot/domUloader.py',
         
'BootloaderOptions':'--entry=xvda2:/boot/vmlinuz-xenpae,/boot/initrd-xenpae',
         'UUID':'20904d23-8a89-1d63-134c-d2606f2fcc47',
         'KernelOptions':'Term=xterm',
         'OnPoweroff':pywbem.Uint16(0),
         'OnReboot':pywbem.Uint16(1),
         'OnCrash':pywbem.Uint16(2)})

proc_rasd = pywbem.CIMInstance('Xen_ProcessorSettingData',
        {'ResourceType':pywbem.Uint16(3),
         'VirtualQuantity':pywbem.Uint64(2),
         'AllocationUnits':'Cores',
         'Weight':pywbem.Uint32(512),
         'Limit':pywbem.Uint64(100)})

mem_rasd = pywbem.CIMInstance('Xen_MemorySettingData',
        {'ResourceType':pywbem.Uint16(4), 
         'VirtualQuantity':pywbem.Uint64(512),
         'AllocationUnits':'MegaBytes'})

disk0_rasd = pywbem.CIMInstance('Xen_DiskSettingData',
         {'ResourceType':pywbem.Uint16(19),
         
'DiskConfigInfo':'file:/var/lib/xen/images/sles10_graphics/disk0,xvda,w'})

disk1_rasd = pywbem.CIMInstance('Xen_DiskSettingData',
        {'ResourceType':pywbem.Uint16(19),
         
'DiskConfigInfo':'file:/var/lib/xen/images/sles10_graphics/disk1,xvdb,w'})

nic_rasd = pywbem.CIMInstance('Xen_NetworkPortSettingData', 
        {'ResourceType':pywbem.Uint16(10), 
         'NICConfigInfo':'mac=00:16:3e:39:7a:f7'})

con_rasd = pywbem.CIMInstance('Xen_ConsoleSettingData', 
        {'ResourceType':pywbem.Uint16(24),
         'Protocol':pywbem.Uint16(1),
         'ConsoleConfigInfo':'vncunused=1'})

rasds = [proc_rasd, mem_rasd, disk0_rasd, disk1_rasd, nic_rasd, con_rasd]

in_params = {'SystemSettings': vssd, 'ResourceSettings': rasds}


# Invoke DefineSystem on Virtual System Management Serive to define a new VM,
# providing the new VM settings and its resource settings.
new_vm = None
try:
    print 'Calling DefineSystem to create a new VM ...'
    (rval, out_params) = conn.InvokeMethod('DefineSystem', vsms[0], **in_params)
    print 'Return Value of DefineSystem: %s' % rval
    print 'Output = %s' % out_params
    new_vm = out_params['ResultingSystem']

except pywbem.CIMError, arg:
    print 'Caught exception when calling InvokeMethod'
    if arg[0] != pywbem.CIM_ERR_NOT_SUPPORTED:
        print 'InvokeMethod(instancename): %s' % arg[1]
        sys.exit(1)

except ValueError, e:
    pass


# Get instances of Xen_ComputerSystem
print 'Enumerating instances of Xen_ComputerSystem:'
inst_names = conn.EnumerateInstanceNames('Xen_ComputerSystem')
for n in inst_names:
    inst = conn.GetInstance(n, LocalOnly=False)
    print 'Domain %s:  EnabledState %s' % (inst['Name'], inst['EnabledState'])

time.sleep(5)

print 'Activating newly defined VM ...'
try:
    # state 2 = enabled(running)
    (rval, out_params) = conn.InvokeMethod('RequestStateChange', new_vm, 
RequestedState='2')
except Exception, e:
    sys.stderr.write('Exception caught in starting VM: %s\n' % e)
    sys.exit(1)
    if rval == 0:
        print 'Successfully activated new vm'
    else:
        sys.stderr.write('Unable to start VM, return code: %s\n' % rval)
        sys.exit(1)

time.sleep(5)

print 'Enumerating instances of Xen_ComputerSystem:'
inst_names = conn.EnumerateInstanceNames('Xen_ComputerSystem')
for n in inst_names:
    inst = conn.GetInstance(n, LocalOnly=False)
    print 'Domain %s:  EnabledState %s' % (inst['Name'], inst['EnabledState'])

#!/usr/bin/python

import sys
import pywbem
import time

# Connect to cimom
conn = pywbem.WBEMConnection('http://localhost', ('root', 'novell'))


# Get instance of Virtual System Management Service
print 'Looking for Virtual System Management Service...'
vsms = conn.EnumerateInstanceNames("Xen_VirtualSystemManagementService")
print 'Got Virtual System Management Service: %s' % str(vsms[0])


# Create virtual system settings for new VM
vssd = '''
instance of Xen_ComputerSystemSettingData {
VirtualSystemIdentifier = "sles10_graphics";
VirtualSystemType = "xen-3.0-x86_32p";
Bootloader = "/usr/lib/xen/boot/domUloader.py";
BootloaderOptions = "--entry=xvda2:/boot/vmlinuz-xenpae,/boot/initrd-xenpae";
UUID = "20904d23-8a89-1d63-134c-d2606f2fcc47";
OnPoweroff = 0;
OnReboot = 1;
OnCrash = 2;
KernelOptions = "Term=xterm";
};
'''

# Create resource settings for the new VM
proc_rasd = '''
instance of Xen_ProcessorSettingData {
ResourceType = 3;
VirtualQuantity = 2;
AllocationUnits = "Cores";
Limit = 100;
Weight = 512;
};
'''

mem_rasd = '''
instance of Xen_MemorySettingData {
ResourceType = 4;
VirtualQuantity = 512;
AllocationUnits = "MegaBytes";
};
'''

disk0_rasd = '''
instance of Xen_DiskSettingData {
ResourceType = 19;
DiskConfigInfo =  "file:/var/lib/xen/images/sles10_graphics/disk0,xvda,w";
};
'''

disk1_rasd = '''
instance of Xen_DiskSettingData {
ResourceType = 19;
DiskConfigInfo =  "file:/var/lib/xen/images/sles10_graphics/disk1,xvdb,w";
};
'''

nic_rasd = '''
instance of Xen_NetworkPortSettingData {
 ResourceType = 10;
 NICConfigInfo = "mac=00:16:3e:39:7a:f7";
};
'''

con_rasd = '''
instance of Xen_ConsoleSettingData {
 ResourceType = 24;
 Protocol = 1;
 ConsoleConfigInfo = "vncdisplay=5";
};
'''

rasds = [proc_rasd, mem_rasd, disk0_rasd, disk1_rasd, nic_rasd, con_rasd]

in_params = {'SystemSettings': vssd, 'ResourceSettings': rasds}


# Invoke DefineSystem on Virtual System Management Serive to define a new VM,
# providing the new VM settings and its resource settings.
new_vm = None
try:
    print 'Calling DefineSystem to create a new VM ...'
    (rval, out_params) = conn.InvokeMethod('DefineSystem', vsms[0], **in_params)
    print 'Return Value of DefineSystem: %s' % rval
    print 'Output = %s' % out_params
    new_vm = out_params['ResultingSystem']

except pywbem.CIMError, arg:
    print 'Caught exception when calling InvokeMethod'
    if arg[0] != pywbem.CIM_ERR_NOT_SUPPORTED:
        print 'InvokeMethod(instancename): %s' % arg[1]
        sys.exit(1)


# Get instances of Xen_ComputerSystem
print 'Enumerating instances of Xen_ComputerSystem:'
inst_names = conn.EnumerateInstanceNames('Xen_ComputerSystem')
for n in inst_names:
    inst = conn.GetInstance(n, LocalOnly=False)
    print 'Domain %s:  EnabledState %s' % (inst['Name'], inst['EnabledState'])

time.sleep(5)

print 'Activating newly defined VM ...'
try:
    # state 2 = enabled(running)
    (rval, out_params) = conn.InvokeMethod('RequestStateChange', new_vm, 
RequestedState='2')
except Exception, e:
    sys.stderr.write('Exception caught in starting VM: %s\n' % e)
    sys.exit(1)
    if rval == 0:
        print 'Successfully activated new vm'
    else:
        sys.stderr.write('Unable to start VM, return code: %s\n' % rval)
        sys.exit(1)

time.sleep(5)

print 'Enumerating instances of Xen_ComputerSystem:'
inst_names = conn.EnumerateInstanceNames('Xen_ComputerSystem')
for n in inst_names:
    inst = conn.GetInstance(n, LocalOnly=False)
    print 'Domain %s:  EnabledState %s' % (inst['Name'], inst['EnabledState'])

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