I took a look at the Ironic PXE driver's handling of this sort of
situation, and while I think it's OK and not affected by the precise
circumstances described in this bug, I think there may be some similar
difficulty in determining why a deploy failed part-way through.
I've tagged the bug as also-affecting and will look into it.
** Also affects: ironic
Importance: Undecided
Status: New
** Changed in: ironic
Assignee: (unassigned) => Devananda van der Veen (devananda)
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https://bugs.launchpad.net/bugs/1184470
Title:
baremetal driver needs a state between "building" and "deploying"
Status in Ironic (Bare Metal Provisioning):
New
Status in OpenStack Compute (Nova):
In Progress
Bug description:
It is not possible to tell from the baremetal node status that a
deployment has failed because a machine's BIOS hung or was improperly
configured. This would be discernable with an additional state change
between BUILDING and DEPLOYING.
Details
=====
During a baremetal deployment, the state is tracked in the
nova_bm.bm_nodes table. The state is set to BUILDING when
virt/driver/baremetal.py:driver.spawn() acquires the node and begins
preparing the deployment. After the power_driver's activate_node()
method is called, the PXE driver goes into a wait loop to see when the
deployment is done. The state is changed to DEPLOYING when baremetal-
deploy-helper receives a connection from the deployment ramdisk, and
then either set to DEPLOYDONE or DEPLOYFAIL, accordingly.
There is a middle step which is not currently represented. If the
baremetal node powers on but never connects to the deploy-helper, it
is impossible to tell from the database whether the deploy environment
was not created or whether the machine is dead.
Proposed fix
==========
Add a PREPARED state to baremetal_states.py, and set the node to this
state immediately after calling activate_node().
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