rc.d scripts for starting BHyve from rc.d

[Aryeh Friedman]

Except for the consoles petitecloud does it much more smoothly (see thread
on getting linux to run on bhyve on -RELEASE for the script).... namely it
should not need conditional logic (instead of being autogenerated on demand)


On Thu, Jan 23, 2014 at 10:44 PM, Craig Rodrigues <rodrigc at freebsd.org>wrote:

> Hi,
>
> I put together some scripts for starting a BHyve VM
> when a system boots.  When the system boots, the console
> of the VM uses  /dev/nmdm.  It is possible to connect
> to the console of the VM with:   cu -l /dev/nmdm0B
>
> It is a bit rough, but works nicely.
> Does someone out there have better scripts for doing this?
>
> Can some of the existing rc.d scripts for jails be reused for BHyve?
>
>
>
>
> I did the following:
>
> == put following entries in /etc/sysctl.conf ==
> # BHyve needs this for tap interfaces
> net.link.tap.user_open=1
> net.link.tap.up_on_open=1
> =================================================================
>
> == put following in /etc/rc.conf ==
> #####################################################
> # Create tap devices, one tap interface per BHyve VM.
> # Add the tap interfaces to bridge0
> ####################################################
> cloned_interfaces="bridge0 tap0"
>
> autobridge_interfaces="bridge0"
> # change igb0 to whatever NIC you are using
> autobridge_bridge0="tap* igb0"
>
>
>
> == put following file in /usr/local/etc/rc.d/bhyvevm ==
> #!/bin/sh
> #
> # $FreeBSD$
> #
>
> # PROVIDE: bhyvevm
> # REQUIRE: netif bgfsck sshd LOGIN localpkg
> # KEYWORD: shutdown
> #
>
> . /etc/rc.subr
>
> name="bhyvevm"
> rcvar="bhyvevm_enable"
>
> start_cmd="bhyvevm_start"
> stop_cmd="bhyvevm_stop"
>
> # read configuration and set defaults
> load_rc_config "$name"
> : ${bhyvevm_enable="YES"}
>
>
> bhyvevm_start()
> {
>         /vm/10.0/start_vm.sh
> }
>
> bhyvevm_stop()
> {
>         /vm/10.0/stop_vm.sh vm1
> }
> run_rc_command "$1"
>
> == put following script in /vm/10.0/start_vm.sh ==
> #!/bin/sh
> VM=vm1
> CONS_A=/dev/nmdm0A
> CONS_B=${CONS_A%%A}B
> IMG=/vm/10.0/disk.img
> TAP=tap0
> BRIDGE=bridge0
>
> touch ${CONS_A}
> if [ -e /dev/vmm/${VM} ]; then
>         /usr/sbin/bhyvectl --vm=${VM} --destroy
> fi
>
> echo "Starting BHyve virtual machine named '${VM}'.  Use 'cu -l ${CONS_B}'
> to access console"
> cmd="/usr/sbin/bhyveload -m 8G -d ${IMG} -c ${CONS_A} ${VM}"
> $cmd
> ret=$?
> if [ $ret -ne 0 ]; then
>         echo "[FAILED]: $cmd"
>         exit $ret
> fi
> ifconfig bridge0 up
> cmd="/usr/sbin/bhyve -c 16 -m 8G -A -H -P -g 0 -s 0:0,hostbridge -s 1:0,lpc
> -s 2:0,virtio-net,${TAP} -s 3:0,virtio-blk,${IMG} -l com1,${CONS_A} ${VM}"
> $cmd &
> ifconfig bridge0 up
> sleep 5
> echo "~." | cu -l ${CONS_B}
> =================================================================
>
> ==== put following script in /vm/10.0/stop_vm.sh ===
> #!/bin/sh
>
> usage()
> {
>         echo $0 "[vm name]"
> }
>
> if [ $# -lt 1 ]; then
>         usage
>         exit 1
> fi
> VM=$1
>
> echo "Stopping BHyve virtual machine named '$VM'"
>
> PID=`pgrep bhyve`
> if [ -n "$PID" ]; then
>     kill $PID
> fi
>
> COUNT=0
> while [ $COUNT -lt 20 -a -n "$PID" ] ; do
>     PID2=`pgrep bhyve`
>     if [ "$PID" != "$PID2" ]; then
>         break
>     fi
>     sleep 5
> done
>
> if [ -e /dev/vmm/${VM} ]; then
>     /usr/sbin/bhyvectl --vm=${VM} --destroy
> fi
>
> exit 0
> =================================================================
>
>
>
> --
> Craig
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>



-- 
Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org