On 4/6/2017 10:05 AM, Jay Pipes wrote:
jaypipes@serialcoder:~/src/git.openstack.org/openstack/nova/nova$
ack-grep --ignore-dir tests --ignore-dir locale "volume_api.create"
compute/api.py
2982: snapshot = self.volume_api.create_snapshot_force(
api/openstack/compute/volumes.py
185: new_volume = self.volume_api.create(
582: create_func = self.volume_api.create_snapshot_force
584: create_func = self.volume_api.create_snapshot
virt/block_device.py
63: :returns: The availability_zone value to pass to volume_api.create
487: vol = volume_api.create(context, self.volume_size, '',
'',
508: vol = volume_api.create(context, self.volume_size,
530: vol = volume_api.create(context, self.volume_size,
vol_name, '',
Best,
-jay
On 04/06/2017 03:29 AM, 李田清 wrote:
Hello,
If we use nova boot from image and created volume, i think the
nova will
use volume/cinder.py:create to create volume. But after insert pdb,
i do not find
the specific code of line to call the create. Can someone help me to
point out the
code of the line? Thanks a lot.
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For the case you're looking for, the volume is created here:
https://github.com/openstack/nova/blob/8d9bf947a4c8654a30e016a5d95d9bec55447506/nova/virt/block_device.py#L508
That happens when the compute manager is preparing block devices to
attach to the instance while building it on the compute host.
After the volume is created and nova gets the volume ID back, we wait
for it to be available before we can attach it:
https://github.com/openstack/nova/blob/8d9bf947a4c8654a30e016a5d95d9bec55447506/nova/virt/block_device.py#L512
Which uses this function passed in from the compute manager (yes, it's
gross tight coupling):
https://github.com/openstack/nova/blob/8d9bf947a4c8654a30e016a5d95d9bec55447506/nova/compute/manager.py#L1221
And finally it attaches the volume to the instance via a call to the
parent class:
https://github.com/openstack/nova/blob/8d9bf947a4c8654a30e016a5d95d9bec55447506/nova/virt/block_device.py#L516
I hope this helps. It only took me 4 years to memorize the flow. :)
--
Thanks,
Matt
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