Open Stack

+++ Kevin Wilson [27/09/16 14:53 +0300]:
>Hello,
>There is a configuration setting called:
>remove_unused_original_minimum_age_seconds
>
>by which you can define the timeout by which used instances will be removed.
>This instances are cached under:
>/var/lib/nova/instances/_base/
>
>see for example:
>http://docs.openstack.org/developer/openstack-ansible/liberty/install-guide/configure-openstack.html
>
>My first question is:
>what is the value of this remove_unused_original_minimum_age_seconds
>setting ? I think I somewhere saw that it is (or was) 24 hours but I
>am not sure. is there a way I can query for this value (apart
>from probing into the code).

Check the reference configuration file for each version, form your
above link I'll supose liberty:

http://docs.openstack.org/liberty/config-reference/content/list-of-compute-config-options.html

If you scroll down to Table 4.39 it lists the "configuration option =
Default value", which stands to:

remove_unused_original_minimum_age_seconds = 86400

And the description:

(IntOpt) Unused unresized base images younger than this will not be removed

>
>My second question is:
>I want to change the value of
>remove_unused_original_minimum_age_seconds(assuming that it is indeed
>24 or event 12 or 3 hours) to be 120 seconds or 60 seconds. I tried
>adding an entry in /etc/nova/nova.conf saying
>remove_unused_original_minimum_age_seconds = 60

Is it under DEFAULT ?

Try to set log level to Debug and check what are the options defined
on the logs for nova.

Regards,
Pablo

>And then restart the nova-compute service by:
>
>service nova-compute stop
>and then
>service nova-compute start
>
>but this seems not to achieve the expected result; I still see unused
>images under  for time intervals way too larger than
>60 seconds.
>
>Can anyone advise about this ? should I restart additional nova services ?
>
>Regards,
>Kevin
>
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-- 

Pablo Iranzo Gómez (Pablo.Iranzo at redhat.com)          GnuPG: 0x5BD8E1E4
Senior Software Maintenance Engineer - OpenStack
RHC{A,SS,DS,VA,E,SA,SP,AOSP}, JBCAA  #110-215-852 
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