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root / lib / hypervisor @ 1ec375e9

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__init__.py 2 kB
hv_base.py 19 kB
hv_chroot.py 10.6 kB
hv_fake.py 10.4 kB
hv_kvm.py 100.3 kB
hv_lxc.py 15.6 kB
hv_xen.py 37.8 kB

Latest revisions

# Date Author Comment
1ec375e9 03/27/2014 10:01 am Dimitris Aragiorgis

ifdown: Use new methods to unconfigure NICs

We unconfigure a NIC (invoke ifdown script) during:

  • instance cleanup
  • finalizing successful migration on source node
  • hot-unplugging a NIC

In case of migration we do only a local cleanup.

Signed-off-by: Dimitris Aragiorgis <>
56725653 03/27/2014 10:01 am Dimitris Aragiorgis

ifdown: Use new methods to create NIC files

NIC files containing corresponding tap name are created during:

  • instance startup
  • NIC hot-add

For compatibility we continue creating indexed based NIC files along
with uuid based ones.

Signed-off-by: Dimitris Aragiorgis <>
02985c42 03/27/2014 10:01 am Dimitris Aragiorgis

ifdown: Make Read/LoadKVMRuntime classmethods

.. and make LoadKVMRuntime() take instance_name rather than the
whole instance object as first argument. This will be needed during
instance cleanup where we the instance object is not available.

We are going to retrieve current NIC configuration from the runtime...
5f3219f9 03/27/2014 10:01 am Dimitris Aragiorgis

ifdown: Introduce _UnconfigureNIC() helper method

This method takes a NIC object, creates the proper invironment
and invokes ifdown script.

It takes an extra boolean argument only_local which is passed
to ifdown script as the second positional argument. It states...
30007542 03/27/2014 10:01 am Dimitris Aragiorgis

ifdown: Extract env creation from ConfigureNic()

Introduce new helper method that creates the environment passed
to ifup/ifdown scripts. Instance tags and NIC index will be passed
only during ifup script since only then are available and
valid. Both can change until a NIC gets removed and thus will not...
2cec9236 03/27/2014 10:01 am Dimitris Aragiorgis

ifdown: Introduce helper methods

Until now Ganeti upon TAP creation, a NIC file was created
under $RUNDIR/kvm-hypervisor/nic/<instance_name>/<nic_index>

Since NICs have obtained a UUID, we are going to create another
file named after its UUID. This will be needed during ifdown...
14b6e873 03/27/2014 10:01 am Dimitris Aragiorgis

ifdown: Change kvm-if* scripts

  • Rename kvm-vif-bridge to kvm-ifup-custom
  • Search if /etc/ganeti/kvm-if*-custom is available
    and execute it instead
  • Pass positional argument to custom script

Signed-off-by: Dimitris Aragiorgis <>
070eec15 03/27/2014 10:01 am Dimitris Aragiorgis

(2.10) hotplug: Verify if a command succeeded or not

Just after issuing _CallHoplugCommands() we invoke
_VerifyHotplugCommand() which parses `info pci` result
and searches for given PCI slot and device id.

If we previously had removed a device but it is still there...
bd338fab 03/27/2014 10:01 am Dimitris Aragiorgis

(2.10) Workaround for monitor bug related to greeting msg

QMP may return multiple greeting messages upon connection.
This is reported on qemu-devel. The fix is one-liner but
until it get's released this is a quick and dirty workaround
that flushes the client's buffer after getting the first...
a30e9f99 03/27/2014 10:01 am Dimitris Aragiorgis

(2.10) hotplug: Each hotplug qemu commmand with a separate socat

Previously we issued one socat command with two "\n" separated
actions (e.g. netdev_add ...\ndevice_add...)

After having observed a strange monitor behavior [1] splitting
those commands and introducing a sleep time in between, may reduce...

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