From 673f0f00794cf3bfe11c4c9452f9dd3f2dd467cc Mon Sep 17 00:00:00 2001
From: Iustin Pop <iustin@google.com>
Date: Fri, 11 Dec 2009 17:47:07 +0100
Subject: [PATCH] Metric: count of primary instances/offline nodes
This helps with evacuation/failover of instances on 2-node clusters with
one one offline.
---
Ganeti/HTools/Cluster.hs | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/Ganeti/HTools/Cluster.hs b/Ganeti/HTools/Cluster.hs
index 47386c307..ad86db49d 100644
--- a/Ganeti/HTools/Cluster.hs
+++ b/Ganeti/HTools/Cluster.hs
@@ -180,6 +180,7 @@ detailedCVNames = [ "free_mem_cv"
, "n1_score"
, "reserved_mem_cv"
, "offline_all_cnt"
+ , "offline_pri_cnt"
, "vcpu_ratio_cv"
, "cpu_load_cv"
, "mem_load_cv"
@@ -212,6 +213,10 @@ compDetailedCV nl =
offline_isec = sum . map (length . Node.sList) $ offline
-- metric: count of instances on offline nodes
off_score = fromIntegral (offline_ipri + offline_isec)::Double
+ -- metric: count of primary instances on offline nodes (this
+ -- helps with evacuation/failover of primary instances on
+ -- 2-node clusters with one node offline)
+ off_pri_score = fromIntegral offline_ipri::Double
cpu_l = map Node.pCpu nodes
-- metric: covariance of vcpu/pcpu ratio
cpu_cv = varianceCoeff cpu_l
@@ -225,7 +230,7 @@ compDetailedCV nl =
-- metric: conflicting instance count
pri_tags_inst = sum $ map Node.conflictingPrimaries nodes
pri_tags_score = fromIntegral pri_tags_inst::Double
- in [ mem_cv, dsk_cv, n1_score, res_cv, off_score, cpu_cv
+ in [ mem_cv, dsk_cv, n1_score, res_cv, off_score, off_pri_score, cpu_cv
, varianceCoeff c_load, varianceCoeff m_load
, varianceCoeff d_load, varianceCoeff n_load
, pri_tags_score ]
--
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