03ebbaaca3
MAAS uses ipmipower to power nodes on and off. The ipmipower command
sometimes fails with the message:
x.x.x.x: BMC error
but exits with return code of 0.
Because MAAS is not aware of this specific error, and is also not able
to detect the power state from the output, the built in retry logic is
not used, resulting in failed deployments or nodes in Power Error.
This patch adds "BMC error" to the list of known retriable errors, and
also adds additional retries.
Error strings from ipmipower 1.4:
http://git.savannah.gnu.org/cgit/freeipmi.git/tree/ipmipower/ipmipower_output.c?h=Release-1_4_0_branch#n52
IPMI_ERRORS known to MAAS 2.3:
https://git.launchpad.net/maas/tree/src/provisioningserver/drivers/power/ipmi.py?h=2.3#n50
Change-Id: Ia4b10e47855d67ba81e9ab800be3d780f8b38cac
Ubuntu MaaS Rack Controller