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[Astlinux-commits] SF.net SVN: astlinux:[7577] branches/1.0/package/qemu
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From: <abe...@us...> - 2016-03-10 14:04:52
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Revision: 7577
http://sourceforge.net/p/astlinux/code/7577
Author: abelbeck
Date: 2016-03-10 14:04:50 +0000 (Thu, 10 Mar 2016)
Log Message:
-----------
qemu, additional contributions by David Kerr, functional init.d script
Modified Paths:
--------------
branches/1.0/package/qemu/bridge.conf
branches/1.0/package/qemu/qemu.mk
Added Paths:
-----------
branches/1.0/package/qemu/qemu.init
Modified: branches/1.0/package/qemu/bridge.conf
===================================================================
--- branches/1.0/package/qemu/bridge.conf 2016-03-09 00:52:24 UTC (rev 7576)
+++ branches/1.0/package/qemu/bridge.conf 2016-03-10 14:04:50 UTC (rev 7577)
@@ -6,17 +6,17 @@
##
## AstLinux admin should create a bridge network to the internal LAN interface.
## This can be done in user.conf with, for example, the line...
-## BRIDGE1="eth1 eth2"
+## BRIDGE0="eth1 eth2"
## In this case bridging two physical interfaces together, but you could just bridge to one.
-## This creates "br1" which you should select as the internal interface in the network tab of AstLinux Web Interface.
+## This creates "br0" which you should select as the internal interface in the network tab of AstLinux Web Interface.
##
## Then in this file permit qemu to access the bridge... (uncomment)
-#allow br1
+#allow br0
##
## More complex ACL using deny and include statements possible. See above link.
##
## When invoking QEMU the network device is created with these flags...
-## -netdev bridge,id=nd1,br=br1
+## -netdev bridge,id=nd1,br=br0
## -device virtio-net-pci,netdev=nd1,id=nic1,mac=52:54:00:xx:yy:yy
## Be sure to select a random mac address, if unspecified then qemu will default to 52:54:00:12:34:56
##
Added: branches/1.0/package/qemu/qemu.init
===================================================================
--- branches/1.0/package/qemu/qemu.init (rev 0)
+++ branches/1.0/package/qemu/qemu.init 2016-03-10 14:04:50 UTC (rev 7577)
@@ -0,0 +1,175 @@
+#!/bin/sh
+
+# Default settings. Override in user.conf file.
+QEMU_START=yes
+# QEMU_RUN_IMAGE=/path/to/vm/image -- Required, must be set in user.conf file
+# QEMU_MEM=1024 -- (value in MB) default set below to lesser of 50% of total memory or 90% of free memory
+# QEMU_VCPU=2 -- default set below to half of available CPU cores
+QEMU_NET_DEVICE=virtio-net-pci
+QEMU_NET_BRIDGE=br0
+QEMU_NET_MACADDR=52:54:00:AB:CD:EF
+QEMU_BLOCK_DEVICE=virtio
+QEMU_VNC_DISPLAY=1
+
+. /etc/rc.conf
+
+start () {
+
+ if [ "$QEMU_START" = "yes" ] && [ -n "$QEMU_RUN_IMAGE" ]; then
+ echo "Starting qemu..."
+ # find system memory in MB
+ TotMem=$(free -m | awk '/^Mem:/{print $2}')
+ FreeMem=$(free -m | awk '/^Mem:/{print $4}')
+ if [ -z "$QEMU_MEM" ]; then
+ # set Memory to the smaller of 50% of total system memory or 90% of available free memory
+ QemuMemory=$((`expr $TotMem / 2` < `expr $FreeMem \* 9 / 10` ? `expr $TotMem / 2` : `expr $FreeMem \* 9 / 10`))
+ else
+ # set Memory to user provided value
+ QemuMemory=$QEMU_MEM
+ if [ $QemuMemory -gt $FreeMem ]; then
+ /usr/bin/logger -s -p user.warning -id -t qemu "WARNING: $QemuMemory MB exceeds system available memory of $FreeMem"
+ fi
+ fi
+
+ CpuCores=$(lscpu -p | /bin/egrep -v '^#' | wc -l)
+ if [ -z "$QEMU_VCPU" ]; then
+ # Set vCPU cores to half available system cores
+ QemuVCpu=$(($CpuCores>1 ? `expr $CpuCores / 2` : 1))
+ else
+ # set vCPU cores to user provided value
+ QemuVCpu=$QEMU_VCPU
+ if [ $QemuVCpu -gt $CpuCores ]; then
+ /usr/bin/logger -s -p user.warning -id -t qemu "WARNING: $QemuVCpu cores exceeds system available cores of $CpuCores"
+ fi
+ fi
+ if [ $QemuVCpu == 1 ]; then
+ QemuVCpuStr=""
+ else
+ QemuVCpuStr="-smp cpus=$QemuVCpu"
+ fi
+
+ # Make sure network bridge exists. If not then exit
+ /usr/sbin/brctl showmacs $QEMU_NET_BRIDGE > /dev/null
+ if [ $? == 1 ]; then
+ /usr/bin/logger -s -p user.err -id -t qemu "ERROR: Bridge $QEMU_NET_BRIDGE does not exist. Exiting"
+ exit
+ fi
+ # Make sure that the bridge helper ACL list allows access to the network bridge we selected.
+ /bin/grep -v '^$' /etc/qemu/bridge.conf | /bin/grep -v '^ *#' | /bin/grep "allow $QEMU_NET_BRIDGE" > /dev/null
+ if [ $? == 1 ]; then
+ /usr/bin/logger -s -p user.err -id -t qemu "ERROR: ACL permissions for bridge $QEMU_NET_BRIDGE not set in /etc/qemu/bridge.conf. Exiting"
+ exit
+ fi
+ # Check tcp-segmentation-offload and general-segmentation-offload
+ /usr/sbin/ethtool -k br0 | /bin/grep "segmentation-offload" | /bin/grep ": off" > /dev/null
+ if [ $? == 0 ]; then
+ /usr/bin/logger -s -p user.warning -id -t qemu "WARNING: host $QEMU_NET_BRIDGE interface has TSO and GSO set to off. Consider setting guest network interface to match with ethtool command"
+ fi
+
+ # If network device virtio then set enable host support
+ if [ "$QEMU_NET_DEVICE" = "virtio-net-pci" ]; then
+ QemuVHost=",vhost=on"
+ else
+ QemuVHost=""
+ fi
+
+ # Load required modules in case they are not already loaded... kvm kvm-amd or kvm-intel and vhost_net
+ /bin/grep "flags" /proc/cpuinfo | /bin/grep " lm" > /dev/null
+ # Presence of 'lm' flag indicates 64-bit processor
+ if [ $? == 0 ]; then
+ /sbin/modprobe kvm
+ if [ $? == 1 ]; then
+ /usr/bin/logger -s -p user.err -id -t qemu "ERROR: Failed to load kernel module kvm. Exiting"
+ exit
+ fi
+ /bin/grep "flags" /proc/cpuinfo | /bin/grep " vmx" > /dev/null
+ # Presence of 'vmx' indicates intel virtualization extensions
+ if [ $? == 0 ]; then
+ /sbin/modprobe kvm-intel
+ if [ $? == 1 ]; then
+ /usr/bin/logger -s -p user.err -id -t qemu "ERROR: Failed to load kernel module kvm-intel. Exiting"
+ exit
+ fi
+ else
+ /bin/grep "flags" /proc/cpuinfo | /bin/grep " svm" > /dev/null
+ # Presence of 'svm' indicates AMD virtualization extensions
+ if [ $? == 0 ]; then
+ /sbin/modprobe kvm-amd
+ if [ $? == 1 ]; then
+ /usr/bin/logger -s -p user.err -id -t qemu "ERROR: Failed to load kernel module kvm-amd. Exiting"
+ exit
+ fi
+ else
+ /usr/bin/logger -s -p user.err -id -t qemu "ERROR: Host CPU does not support virtualization. Exiting"
+ exit
+ fi
+ fi
+ if [ -n "QemuVHost" ]; then
+ # Only load vhost_net if virtio network device selected
+ /sbin/modprobe vhost_net
+ if [ $? == 1 ]; then
+ /usr/bin/logger -s -p user.err -id -t qemu "ERROR: Failed to load kernel module vhost_net. Exiting"
+ exit
+ fi
+ fi
+ else
+ /usr/bin/logger -s -p user.err -id -t qemu "ERROR: Host CPU is not 64-bit architecture. Exiting"
+ exit
+ fi
+
+ # And now run qemu.
+ /usr/bin/logger -s -p user.info -id -t qemu "Run image $QEMU_RUN_IMAGE with $QemuMemory MB of Memory and $QemuVCpu CPU cores on Network $QEMU_NET_BRIDGE. Console on VNC port 590$QEMU_VNC_DISPLAY"
+ /usr/bin/qemu \
+ -m $QemuMemory \
+ -drive file="$QEMU_RUN_IMAGE",if=$QEMU_BLOCK_DEVICE,index=0 \
+ -netdev tap,id=nd1,helper="/usr/libexec/qemu-bridge-helper --br=$QEMU_NET_BRIDGE"$QemuVHost \
+ -device $QEMU_NET_DEVICE,netdev=nd1,id=nic1,mac=$QEMU_NET_MACADDR \
+ -enable-kvm \
+ $QemuVCpuStr \
+ -qmp tcp:localhost:4444,server,nowait \
+ -daemonize \
+ -usbdevice tablet \
+ -display vnc=:$QEMU_VNC_DISPLAY
+ fi
+}
+
+stop () {
+
+ /bin/netstat -ln | /bin/grep :4444 > /dev/null
+ if [ $? == 0 ]; then
+ echo "Stopping qemu..."
+ echo -e "{ \"execute\": \"qmp_capabilities\" }\n{ \"execute\": \"system_powerdown\" }\n" | /usr/bin/nc -w 10 localhost 4444 >/dev/null
+ else
+ /usr/bin/logger -s -p user.warning -id -t qemu "WARNING: cannot stop -- qemu not running."
+ fi
+}
+
+if [ ! -x /usr/bin/qemu ]; then
+ exit
+fi
+
+case $1 in
+
+start)
+ start
+ ;;
+
+stop)
+ stop
+ ;;
+
+init)
+ start
+ ;;
+
+restart)
+ stop
+ sleep 2
+ start
+ ;;
+
+*)
+ echo "Usage: start|stop|restart"
+ ;;
+
+esac
Property changes on: branches/1.0/package/qemu/qemu.init
___________________________________________________________________
Added: svn:executable
## -0,0 +1 ##
+*
\ No newline at end of property
Modified: branches/1.0/package/qemu/qemu.mk
===================================================================
--- branches/1.0/package/qemu/qemu.mk 2016-03-09 00:52:24 UTC (rev 7576)
+++ branches/1.0/package/qemu/qemu.mk 2016-03-10 14:04:50 UTC (rev 7577)
@@ -116,12 +116,18 @@
if [ -f $(TARGET_DIR)/usr/bin/qemu-system-x86_64 ]; then \
ln -sf qemu-system-x86_64 $(TARGET_DIR)/usr/bin/qemu ; \
fi
+ $(INSTALL) -D -m 0755 package/qemu/qemu.init $(TARGET_DIR)/etc/init.d/qemu
+ ln -sf ../../init.d/qemu $(TARGET_DIR)/etc/runlevels/default/S95qemu
+ ln -sf ../../init.d/qemu $(TARGET_DIR)/etc/runlevels/default/K04qemu
endef
define QEMU_UNINSTALL_TARGET_CMDS
rm -rf $(TARGET_DIR)/etc/qemu
rm -f $(TARGET_DIR)/usr/bin/qemu
rm -f $(TARGET_DIR)/usr/bin/qemu-*
+ rm -f $(TARGET_DIR)/etc/init.d/qemu
+ rm -f $(TARGET_DIR)/etc/runlevels/default/S95qemu
+ rm -f $(TARGET_DIR)/etc/runlevels/default/K04qemu
endef
$(eval $(call GENTARGETS,package,qemu))
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