From 3c306b3bffe6ce680f9bf5b0602fead43a9187e7 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Sun, 10 May 2020 17:24:36 +0300
Subject: feat: use all the memory on the manager for the worker, sans 2GB

---
 contractor | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/contractor b/contractor
index 179f3bf..d5ef494 100755
--- a/contractor
+++ b/contractor
@@ -329,11 +329,18 @@ class CreateWorkerVM(RemoteExecution):
             """
 n="$(grep -c '^processor' /proc/cpuinfo)"
 n="$(expr "$n" - 1)"
+mem="$(awk '/MemTotal/ {{ print $2 }}' /proc/meminfo)"
+smaller="$(expr "$mem" - 2097152)"
+if [ "$smaller" -lt 0 ]
+then
+    smaller="$mem"
+fi
+mem="$(expr "$smaller" / 1024)"
 virt-install \
     --connect=qemu:///system \
     --quiet \
     --name=worker \
-    --memory=4096 \
+    --memory="$mem" \
     --vcpus="$n" \
     --cpu=host \
     --import \
-- 
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