Andrew Bogott has uploaded a new change for review.

  https://gerrit.wikimedia.org/r/205978

Change subject: Set live_migration_bandwidth to 300Mbps.
......................................................................

Set live_migration_bandwidth to 300Mbps.

If this feature works (a big if) this may ease the pain
of block migration.  Currently the network gets pretty
miserable during migrations.

Change-Id: Ia6367445783708dd56789e0dbefca32eaeaf1a6e
---
M modules/openstack/templates/icehouse/nova/nova.conf.erb
1 file changed, 7 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.wikimedia.org:29418/operations/puppet 
refs/changes/78/205978/1

diff --git a/modules/openstack/templates/icehouse/nova/nova.conf.erb 
b/modules/openstack/templates/icehouse/nova/nova.conf.erb
index 10a64fa..12e4a55 100644
--- a/modules/openstack/templates/icehouse/nova/nova.conf.erb
+++ b/modules/openstack/templates/icehouse/nova/nova.conf.erb
@@ -125,3 +125,10 @@
 zone_name=<%= novaconfig["zone"] %>
 # Should be:
 #default_availability_zone = <%= novaconfig["zone"] %>
+
+[libvirt]
+# live_migration_bandwidth is documented in the code, and nowhere else.
+# 'Maximum bandwidth to be used during migration, in Mbps'
+# Limit this to around a third of available 1Gbps connection so we don't
+# throttle running instances when migrating.
+live_migration_bandwidth=300

-- 
To view, visit https://gerrit.wikimedia.org/r/205978
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings

Gerrit-MessageType: newchange
Gerrit-Change-Id: Ia6367445783708dd56789e0dbefca32eaeaf1a6e
Gerrit-PatchSet: 1
Gerrit-Project: operations/puppet
Gerrit-Branch: production
Gerrit-Owner: Andrew Bogott <[email protected]>

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