[openstack-dev] [nova] gauging feelings on a new config option for powervm_lpar_operation_timeout

Matt Riedemann mriedem at us.ibm.com
Sun Aug 11 20:04:28 UTC 2013

While working on a patch to implement hard reboot for the powervm driver 
[1], I noticed that the stop_lpar (power_off) method has a timeout 
argument with a default value of 30 seconds but it's not overridden 
anywhere in the code and it's not configurable.  The start_lpar (power_on) 
method doesn't have a timeout at all.  I was thinking about creating a 
patch to (1) make start_lpar poll until the instance is running and (2) 
making the stop/start timeouts configurable with a new config option, 
something like powervm_lpar_operation_timeout that defaults to 60 seconds.

I looked in nova.conf.sample for existing timeout options and found this 
one for the xen virt driver:

# number of seconds to wait for instance to go to running
# state (integer value)

I'm looking to basically get a feeling of what kind of reaction I'll get 
if I put a patch up with a new config option for this in the powervm 
driver.  If there aren't any major pushes against it, I'll start working a 

[1] https://review.openstack.org/#/c/40748/ 


Advisory Software Engineer
Cloud Solutions and OpenStack Development

Phone: 1-507-253-7622 | Mobile: 1-507-990-1889
E-mail: mriedem at us.ibm.com

3605 Hwy 52 N
Rochester, MN 55901-1407
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