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|
#! /bin/sh
### BEGIN INIT INFO
# Provides: qemu-kvm kvm
# Required-Start: mountkernfs
# Required-Stop:
# Should-Start: udev devfsd
# Should-Stop:
# Default-Start: S
# Default-Stop:
# Short-Description: KVM init script
# Description: This script loads the kernel modules needed by kvm
### END INIT INFO
. /lib/lsb/init-functions
# Figure out which module we need.
whichmodule() {
if grep -q '^flags.*\<vmx\>' /proc/cpuinfo
then
module=kvm_intel
return 0
elif grep -q '^flags.*\<svm\>' /proc/cpuinfo
then
module=kvm_amd
return 0
else
module=
return 1
fi
}
case "$1" in
start)
if ! whichmodule
then
log_failure_msg "Your system does not have the CPU extensions required to use KVM. Not doing anything."
exit 0
fi
if [ -c /dev/kvm ]
then
log_success_msg "/dev/kvm already exists. Not doing anything."
exit 0
fi
if modprobe "$module"
then
log_success_msg "Loading kvm module $module"
else
log_failure_msg "Module $module failed to load"
exit 1
fi
;;
stop)
if ! whichmodule
then
exit 0
fi
if lsmod | grep -qw "$module"
then
if rmmod "$module"
then
log_success_msg "Succesfully unloaded kvm module $module"
rmmod kvm
else
log_failure_msg "Failed to remove $module"
exit 1
fi
else
log_failure_msg "Module $module not loaded"
fi
;;
force-reload|restart)
$0 stop
$0 start
;;
*)
echo "Usage: $0 {start|stop|restart|force-reload}" >&2
exit 3
;;
esac
:
|
