[libvirt-users] list storage pools and volumes using python api calls

[Alex Jia]

On 05/08/2012 03:39 AM, Syed A. Ali wrote:
> there is a disconnect between the methods that help(libvirt) shows 
> for class virStorageVol and the method listed in
> /usr/lib64/python2.6/site-packages/libvirt.py for the same class.
Yeah, in fact, you run 'import libvirt' in interactive python, it will 
import the above libvirt.py module.
> method createXML used for virStorageVolCreateXML is missing when i use 
> help(libvirt) and scroll down to the class virStorageVol, however the 
> method is listed in libvirt.py as:
The virStorageVolCreateXML() is a libvirt C API not python API, you may 
find its symbol link in libvirtmod.so:

# nm -A -D /usr/lib64/python2.6/site-packages/libvirtmod.so |grep 
virStorageVolCreateXML
/usr/lib64/python2.6/site-packages/libvirtmod.so:00000000000265c0 T 
libvirt_virStorageVolCreateXML
/usr/lib64/python2.6/site-packages/libvirtmod.so:00000000000231d0 T 
libvirt_virStorageVolCreateXMLFrom
/usr/lib64/python2.6/site-packages/libvirtmod.so:                 U 
virStorageVolCreateXML
/usr/lib64/python2.6/site-packages/libvirtmod.so:                 U 
virStorageVolCreateXMLFrom

In addition, you may find the following codes in 
/usr/lib64/python2.6/site-packages/libvirt.py,
the libvirtmod.so shared library is imported by libvirt.py:

<snip>
try:
     import libvirtmod
except ImportError, lib_e:
     try:
         import cygvirtmod as libvirtmod
     except ImportError, cyg_e:
         if str(cyg_e).count("No module named"):
             raise lib_e
</snip>


>
>     def createXML(self, xmldesc, flags):
>         """Create a storage volume within a pool based
>         on an XML description. Not all pools support
>         creation of volumes """
>         ret = libvirtmod.virStorageVolCreateXML(self._o, xmldesc, flags)
>         if ret is None:raise libvirtError('virStorageVolCreateXML() 
> failed', pool=self)
>         __tmp = virStorageVol(self, _obj=ret)
>         return __tmp
>
> ------------------------------------------------------------------------
> *From:* Osier Yang <jyang at redhat.com>
> *To:* Syed A. Ali <syed_a_ali at yahoo.com>
> *Cc:* "libvirt-users at redhat.com" <libvirt-users at redhat.com>
> *Sent:* Monday, May 7, 2012 6:23 AM
> *Subject:* Re: [libvirt-users] list storage pools and volumes using 
> python api calls
>
> On 2012年05月07日 13:26, Syed A. Ali wrote:
> > how do i list storage pools and volumes using the python bindings?
> > basically the python api calls for virsh pool-list and virsh vol-list
> > thanks
> >
> >
>
> # python
> >>> import libvirt
> >>> help(libvirt)
>
> You will find "listStoragePools" in class "virConnect",
> and "listVolumes" in class "virStoragePool".
>
> Regards,
> Osier
>
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