Some scripts to help setup vfe vhostd enviroment

May need root privilege to run for libvirtd connection

TODO

• Collect all logs on host

Dependencies

libvirt-python

How to use

1. Check if same uuid VFs in vhostd are ALL in SAME VM

    sudo ./vfe-vdpa-info.py
   
    [/] UUID check pass for gen-l-vrt-295-005-CentOS-7.4
    [/] UUID check pass for gen-l-vrt-295-008-RH-8.2
    [/] UUID check pass for gen-l-vrt-295-007-CentOS-7.4
   

2. Dump VF slot/vfid/socket/sriov related info (done)

    sudo ./vfe-vdpa-info.py -d
   
   
    == PF  ==
    {
      "name": "0000:3b:00.2",
      "type": "Virtio network device (rev 01)",
      "sriov_totalvfs": 63,
      "sriov_numvfs": 63,
      "vfid_map": {
        "0000:3b:04.4": 1,
        "0000:3b:04.5": 2,
        ...
        }
    }
   
    VM: gen-l-vrt-295-005-CentOS-7.4
    /tmp/vfe-net0: 0000:3b:04.4, 8de2c370-4f4b-41a1-a107-3139fe8b7210, vfid=1, configured=True, pf=0000:3b:00.2
    /tmp/vfe-net1: 0000:3b:04.5, 8de2c370-4f4b-41a1-a107-3139fe8b7210, vfid=2, configured=True, pf=0000:3b:00.2
    /tmp/vfe-net2: 0000:3b:04.6, 8de2c370-4f4b-41a1-a107-3139fe8b7210, vfid=3, configured=True, pf=0000:3b:00.2
   
    == Not added to VM ==
    /tmp/vfe-net16: 0000:3b:06.4, 8de2c370-4f4b-41a1-a107-3139fe8b7211, vfid=17, configured=False, pf=0000:3b:00.2
    /tmp/vfe-net17: 0000:3b:06.5, 8de2c370-4f4b-41a1-a107-3139fe8b7211, vfid=18, configured=False, pf=0000:3b:00.2
   

3. Verify VM xml is good for vDPA

    sudo ./vfe-vdpa-info.py  -i -n  gen-l-vrt-295-005-CentOS-7.4
    sudo ./vfe-vdpa-info.py  -i -f  /images/testbf3/configs/gen-l-vrt-295-005-CentOS-7.4.xml
   
    == gen-l-vrt-295-005-CentOS-7.4 ==
   
    [-] No xmlns:qemu in tag domain? you can not use <qemu:commandline>
    [/] hugepage size 1048576
    [/] QEMU binary: /images/testbf3/sw/qemu/bin/qemu-system-x86_64
    [/] Set numa memory as shared
   

   • xmlns:qemu in domain

       <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
     

   • hugepage as backend

     <memoryBacking>
       <hugepages>
         <page size='1048576' unit='KiB'/>
       </hugepages>
     </memoryBacking>
     

   • QEMU binary

       <emulator>/images/testvfe/sw/qemu/bin/x86_64-softmmu/qemu-system-x86_64</emulator>
     

   • Memory as shared

       <cpu mode='host-model' check='partial'>
         <numa>
           <cell id='0' cpus='0-3' memory='8388608' unit='KiB' memAccess='shared'/>
         </numa>
       </cpu>
     

Rebuild and install libvirt-python (python API binding)

If you are using own build libvirtd instead of OS inbox version. The inbox python3-libvirt may have compatible issue.

1. make sure libvirtd build and install with -Ddocs=enabled

   # depend on OS type, build libvirtd may need do:
   pip3 uninstall rst2html5
   pip3 install docutils
   

2. Remove inbox python3-libvirt

   sudo rpm -e --nodeps python3-libvirt
   

3. Clone, build, install libvirt-python

   git clone git@github.com:libvirt/libvirt-python.git
   cd libvirt-python
   git checkout v8.0.0 # match libvirtd version
   sudo python setup.py install