From eec193967f7aca562f7d99eaf5d6177f08e9a99e Mon Sep 17 00:00:00 2001
From: Michael Janczyk
Date: Sun, 11 Apr 2010 23:08:47 +0200
Subject: virtualization plugin, now with calculation of mem, run-vmgrid and
 run-virt uses it

---
 os-plugins/plugins/vmgrid/files/vmgrid | 55 ++++++++++------------------------
 1 file changed, 16 insertions(+), 39 deletions(-)

(limited to 'os-plugins/plugins/vmgrid/files/vmgrid')

diff --git a/os-plugins/plugins/vmgrid/files/vmgrid b/os-plugins/plugins/vmgrid/files/vmgrid
index ef86cb5a..d8ccd938 100644
--- a/os-plugins/plugins/vmgrid/files/vmgrid
+++ b/os-plugins/plugins/vmgrid/files/vmgrid
@@ -24,7 +24,7 @@
 
 if [ -n "$1" ]; then
   if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
-    echo -e "Usage: vmgrid [[-g] [--forcemem <memorysize in MB>] \c"
+    echo -e "Usage: vmgrid [[-g] [--mem <memorysize in MB>] \c"
     echo -e "[/path/]filename[.xml]]"
     exit 0
   else
@@ -47,9 +47,6 @@ RWSHARE=/var/opt/openslx/plugins/vmgrid/share
 # load general virtualization information
 [ -f ${PLUGINCONFROOT}/virtualization/virtualization.conf ] && \
   . ${PLUGINCONFROOT}/virtualization/virtualization.conf
-# get the vmchooser_active var
-[ -f ${PLUGINCONFROOT}/vmchooser/vmchooser.conf ] && \
-  . ${PLUGINCONFROOT}/vmchooser/vmchooser.conf
 
 ################################################################################
 ### Functions used throughout the script
@@ -69,48 +66,35 @@ writelog () {
 ### Configure VMs for autostart and set RAM
 ################################################################################
 
-# start to log, create shrare log dir
+# start to log, create share log dir
 mkdir -m 1777 -p ${vmgrid_rwmnt}/logs
 mkdir -m 1777 -p /tmp/vmgrid
 mkdir -p /tmp/vmgrid/${USER}
 echo "Starting to log at $(date)" \
   >${vmgrid_rwmnt}/logs/run-vmgrid.${USER}.$$.log
 
+if [ -z "${hostratio}" ]; then
+  writelog "There has been an error in the memory configuration in stage 3"
+  writelog "Please check your memory ratio settings, exiting!"
+  exit 1
+fi
+
 # remove blanks
-vmgrid_memratio=$(echo ${vmgrid_memratio} | sed -e "s, *,,g")
 vmgrid_startvms=$(echo ${vmgrid_startvms} | sed -e "s, *,,g")
+vmgrid_memratio=$(echo ${vmgrid_memratio} | sed -e "s, *,,g")
 
-# get hostmem, totalmem from stage 3
-hostratio=$(echo ${vmgrid_memratio} | awk -F ',' '{print $6}')
-hostmem=$(expr ${totalmem} \* ${hostratio} / 100 2>/dev/null)
-if [ ${hostmem} -lt 256 2>/dev/null ]; then
-  hostmem=256
-  writelog "${hostmem} MB RAM reserved for host"
-fi
-
-# get other vm mem
-if [ -n "${vmchooser_active}" ]; then
-  othervmratio=$(echo ${vmgrid_memratio} | awk -F ',' '{print $5}')
-  othervmmem=$(expr ${totalmem} \* ${othervmratio} / 100 2>/dev/null)
-  if [ ${othervmmem} -lt 512 2>/dev/null ]; then
-    othervmmem=512
-    writelog "${othervmmem} MB RAM reserved for other virtualization solutions"
-  fi
-else
-  othervmratio=0
-  othervmmem=0
-fi
+# hostmem, mainvirt from virtualization plugin
+# ratio minus other vms and host
+restratio=$(expr 100 - ${hostratio} - ${mainvirtratio})
 
+# hostmem, totalmem, mainvirtmem from virtualization plugin
 # calculate freemem
-freemem=$(expr ${totalmem} - ${hostmem} - ${othervmmem} 2>/dev/null)
+freemem=$(expr ${totalmem} - ${hostmem} - ${mainvirtmem} 2>/dev/null)
 if [ ${freemem} -lt 512 2>/dev/null ]; then
   writelog "Not enough free RAM for this plugin, free: ${freemem} MB"
   exit 1
 fi
 
-# ratio minus other vms and host
-restratio=$(expr 100 - ${hostratio} - ${othervmratio})
-
 # get clients mem ratio
 vmsumratios=0
 for i in {1..4}; do
@@ -123,15 +107,8 @@ for i in {1..4}; do
   vmsumratios=$(expr ${vmsumratios} + ${vmratio[$i]} 2>/dev/null)
 done
 
-# ratio test: 100 - host - other vm + grid ratios
-ratiotest=$(expr 100 - ${restratio} + ${vmsumratios} 2>/dev/null)
-if [ ${ratiotest} -gt 100 ]; then
-  #writelog "you managed to get over 100% in ratio Einstein: ${ratiotest}%"
-  exit 1
-fi
-
 for i in {1..4}; do
-  # calculate vms mem: mem = $freemem * $vmratio/100 * 100/$restratio
+  # calculate VMs mem: mem = $freemem * $vmratio/100 * 100/$restratio
   # multiple of 4
   vmmem[$i]=$(expr ${freemem} \* ${vmratio[$i]} / ${restratio} / 4 \* 4 \
     2>/dev/null)
@@ -155,7 +132,7 @@ for i in {1..4}; do
       writelog "${vm[$i]} already running, skipping!"
     else
       writelog "Starting ${vm[$i]} via run-vmgrid.sh with ${vmmem[$i]} MB RAM"
-      run-vmgrid.sh --forcemem ${vmmem[$i]} ${vm[$i]} 2>/dev/null &
+      run-vmgrid.sh --mem ${vmmem[$i]} ${vm[$i]} 2>/dev/null &
       echo $! > /tmp/vmgrid/${USER}/vmgrid.pids
       # wait 5 secs for the next vm to start
       sleep 10
-- 
cgit v1.2.3-55-g7522