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cloudstack/scripts/vm/hypervisor/xen/runvm.sh
Manuel Amador (Rudd-O) 05c020e1f6 Source code committed
2010-08-11 09:13:29 -07:00

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#!/usr/bin/env bash
# $Id: runvm.sh 9132 2010-06-04 20:17:43Z manuel $ $HeadURL: svn://svn.lab.vmops.com/repos/vmdev/java/scripts/vm/hypervisor/xen/runvm.sh $
# runvm.sh -- start a vm from a directory containing the kernel and os images
# iscsi mode
#
usage() {
printf "Usage: %s: -v <vnet-id> -i <ip-address> -m <memory in MB> -a <mac address> -g <gateway ip addr> -c <vnc console #> -w <vnc password>-l <vm label> -n <# cores> -u <compute units in pct> -r <vif rate in Mbits/sec> -R <multicast rate in Mbits/sec> -b <bootloader> <image-dir>\n" $(basename $0) >&2
}
check_vnetd_running() {
/sbin/lsmod | grep vnet_module > /dev/null
local module_loaded=$?
if [[ ( -z $(pidof vnetd) ) && ( $module_loaded -ne 0 ) ]]
then
printf 'vnet: Neither userspace daemon running nor kernel module loaded!, not starting vm '"$vmname\n" >&2
exit 2
fi
}
_vifname() {
local vmname=$1
local domid=$(xm domid $vmname)
echo vif${domid}
}
add_acct_rule() {
local vmname=$1
local intf=$2
local vifname=$(_vifname $vmname)
iptables -A FORWARD -m physdev --physdev-out $vifname.$intf -j ACCEPT
return $?
}
limit_multicast() {
local vmname=$1
local mcrate=$2 ## Mbits/sec
local domid=$(xm domid $vmname)
local vifname=$(_vifname $vmname)
vifname=${vifname}.0
local privip=$(ip addr show xenbr0 | awk "/^.*inet.*xenbr0\$/{print \$2}" | sed -n '1 s,/.*,,p')
if [ "$mcrate" -eq 0 ]
then
return 0
fi
local pkts
local burst
let pkts=$mcrate*2000/3
if [ $pkts -gt 10000 ]
then
pkts=10000
fi
burst=$pkts
ebtables -A FORWARD --pkttype-type broadcast -i $vifname -j mark --mark-set $domid --mark-target CONTINUE
ebtables -A FORWARD --pkttype-type multicast -i $vifname -j mark --mark-set $domid --mark-target CONTINUE
ebtables -A FORWARD --mark ${domid} --limit ${pkts}/sec --limit-burst ${burst} -j ACCEPT
ebtables -A FORWARD --mark ${domid} -j DROP
}
create_vnet () {
local vnetid=$1
vnetid=$(echo $vnetid | tr '[A-Z]' '[a-z]')
local bridgeid="vnbr""$vnetid"
local vnifid="vnif""$vnetid"
local longvnetid="0000:0000:0000:0000:0000:0000:0000:""$vnetid"
eval "$2=$bridgeid"
local br_exist=0
ifconfig $bridgeid &> /dev/null
br_exist=$?
# Create the vnet even if it already exists. /usr/sbin/vn operation is
# idempotent
vn vnet-create -b ${bridgeid} ${longvnetid} &> /dev/null
#echo $bridgeid $vnifid $longvnetid
if [ $br_exist -gt 0 ]
then
sleep 0.5
ifconfig $vnifid down
sleep 0.5
ifconfig $vnifid up
fi
return 0
}
# check if gateway domain is up and running
check_gw() {
pings=1
while ! ping -c 1 -n -q $1 > /dev/null && [ $pings -ne $2 ]
do
let pings=pings+1
done
printf "##check_gw: number of pings=$pings\n"
[ $pings -eq $2 ] && return 1
return 0;
}
#Append an entry into dhcp hosts file and knock the dhcp server on its head
add_dhcp_entry() {
local gw=$1
local mac=$2
local ip=$3
local vm=$4
ssh -p 3922 -o StrictHostKeyChecking=no -i ./id_rsa root@$gw "/root/edithosts.sh $mac $ip $vm" >/dev/null
if [ $? -gt 0 ]
then
$5=1
return 1
fi
return 0
}
#set -x
DISKDIR="/dev/disk/by-vm/"
MIRRORDIR="/dev/md/"
vflag=
iflag=
mflag=
Mflag=
aflag=
gflag=
lflag=
cflag=
bflag=
Rflag=
rflag=
vcpus=0
cpucap=0
rate=200
mcrate=10
vncpwd="password"
bootloader="PyGrub"
while getopts 'Mv:i:m:a:g:l:c:n:u:w:b:R:r:' OPTION
do
case $OPTION in
v) vflag=1
vnetid="$OPTARG"
;;
i) iflag=1
ipaddr="$OPTARG"
;;
r) rflag=1
rate="$OPTARG"
;;
R) Rflag=1
mcrate="$OPTARG"
;;
m) mflag=1
ram="$OPTARG"
;;
M) Mflag=1
;;
a) aflag=1
macaddr="$OPTARG"
;;
g) gflag=1
gateway="$OPTARG"
;;
l) lflag=1
vmname="$OPTARG"
;;
c) cflag=1
vncconsole="$OPTARG"
;;
w) wflag=1
vncpwd="$OPTARG"
;;
n) nflag=1
vcpus="$OPTARG"
;;
u) uflag=1
cpucap="$OPTARG"
;;
b) bflag=1
bootloader="$OPTARG"
;;
?) usage
exit 2
;;
esac
done
bootloader=$(echo $bootloader | tr '[A-Z]' '[a-z]' )
if [ "$vflag$mflag$iflag$aflag$gflag$lflag$cflag" != "1111111" ]
then
usage
exit 2
fi
wincpuopts=""
if [ "$vcpus" == 0 -a "$cpucap" == 0 ]
then
#Windows doesn't like it
wincpuopts=""
elif [ "$vcpus" == 0 ]
then
wincpuopts="cpu_cap=$cpucap"
elif [ "$cpucap" == 0 ]
then
wincpuopts="vcpus=$vcpus"
else
wincpuopts="vcpus=$vcpus cpu_cap=$cpucap"
fi
shift $(($OPTIND - 1))
imagedir=$1
if [ -z "$imagedir" ]
then
usage
exit 2
fi
if [ "$vmname" == gateway ]
then
printf "Error: $vmname is illegal (this is the hostname of domR)\n" >&2
exit 2
fi
if xm list $vmname &>/dev/null
then
printf "Error: vm $vmname already exists\n" >&2
exit 2
fi
if [ "$ipaddr" == "10.1.1.1" ]
then
printf "Error: 10.1.1.1 is the gateway and cannot be assigned to a vm\n" >&2
exit 2
fi
#make sure vnetd is running
check_vnetd_running
# grab the kernel, bootloader and disk images
if [ "$Mflag" == "" ]
then
diskdir=$DISKDIR
else
diskdir=$MIRRORDIR
fi
kernel="$imagedir/"$(ls $imagedir | grep vmlinuz)
ramdisk="$imagedir/"$(ls $imagedir | grep initrd)
rootdisk=$diskdir/$vmname-root
swapdisk=$diskdir/$vmname-swap
datadisk1=$diskdir/$vmname-datadisk-1
datadisk2=$diskdir/$vmname-datadisk-2
#set -x
if [ "$rootdisk" == "$diskdir/" ]
then
printf "Error: No root disk found\nVM $vmname not started\n" >&2
exit 2
fi
if [ "$datadisk1" == "$diskdir/" ]
then
printf "Error: No data disk found\nVM $vmname not started\n" >&2
exit 2
fi
linux=0
windows=0
pygr=0
case "$bootloader" in
"pygrub")
pygr=1
;;
"hvm")
kernel="/usr/lib/xen/boot/hvmloader"
windows=1
builder="hvm"
;;
"external")
if [ "$kernel" != "$imagedir/" ] && [ "$ramdisk" != "$imagedir/" ]
then
linux=1
builder="linux"
else
printf "Error: No kernel&ramdisk found\nVM $vmname not started\n" >&2
exit 2
fi
;;
*) printf "Error: invalid bootloader\nVM $vmname not started\n" >&2
exit 2
esac
if [ "$kernel" != "$imagedir/" ] && [ "$ramdisk" != "$imagedir/" ]
then
#Linux kernel
linux=1
builder="linux"
elif [ -f "$imagedir/pygrub" ]
then
#pygrub linux image
pygr=1
else
kernel="/usr/lib/xen/boot/hvmloader"
windows=1
builder="hvm"
fi
# Create the vnet locally if not already created
bridge=""
if ! create_vnet "$vnetid" bridge ; then
printf "Failed to create vnet, exiting\n" >&2
exit 5
fi
# create the vm (linux)
if [ $linux -eq 1 ]; then
xm new /dev/null kernel="$kernel" name="$vmname" disk="phy:$rootdisk,xvda1,w" disk="phy:$swapdisk,xvda2,w" disk="phy:$datadisk1,xvda3,w" ramdisk="$ramdisk" memory=$ram vif="mac=$macaddr,bridge=$bridge,rate=${rate}Mb/s" dhcp="dhcp" root="/dev/xvda1 ro" vnc=1 vfb="type=vnc,vncdisplay=$vncconsole,vncpasswd=$vncpwd" ip="$ipaddr" extra="fastboot" vcpus=$vcpus cpu_cap=$cpucap on_crash="destroy"
elif [ $pygr -eq 1 ]; then
xm new /dev/null bootloader="/usr/bin/pygrub" name="$vmname" disk="phy:$rootdisk,xvda,w" disk="phy:$datadisk1,xvdb,w" memory=$ram vif="mac=$macaddr,bridge=$bridge,rate=${rate}Mb/s" vfb="type=vnc,vncdisplay=$vncconsole,vncpasswd=$vncpwd" extra="fastboot" vcpus=$vcpus cpu_cap=$cpucap on_crash="destroy"
else
#create the vm (windows/HVM)
xm new /dev/null kernel="$kernel" name="$vmname" disk="phy:$rootdisk,hda,w" disk="phy:$datadisk1,hdb,w" builder="$builder" memory=$ram vif="mac=$macaddr,bridge=$bridge,type=ioemu,rate=${rate}Mb/s" vnc=1 vncdisplay="$vncconsole" vncpasswd="$vncpwd" usbdevice="tablet" $wincpuopts on_crash="destroy"
fi
if [ $? -gt 0 ]; then
exit 10
fi
#Kick off the vm
xm start $vmname
if [ $? -gt 0 ]; then
exit 20
fi
add_acct_rule $vmname 0
limit_multicast $vmname $mcrate
exit 0
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