mirror of
https://github.com/vdsm/virtual-dsm.git
synced 2025-02-24 13:30:02 +08:00
86 lines
3.3 KiB
Bash
Executable File
86 lines
3.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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FILE="/images/boot.img"
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if [ ! -f "$FILE" ]; then
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echo "ERROR: Synology DSM boot-image does not exist ($FILE)"
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exit 2
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fi
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FILE="/images/system.img"
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if [ ! -f "$FILE" ]; then
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echo "ERROR: Synology DSM system-image does not exist ($FILE)"
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exit 2
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fi
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FILE="/images/data.img"
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if [ ! -f "$FILE" ]; then
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truncate -s 16G $FILE
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fi
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if [ ! -f "$FILE" ]; then
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echo "ERROR: Synology DSM data-image does not exist ($FILE)"
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exit 2
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fi
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# A bridge of this name will be created to host the TAP interface created for
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# the VM
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QEMU_BRIDGE='qemubr0'
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# DHCPD must have an IP address to run, but that address doesn't have to
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# be valid. This is the dummy address dhcpd is configured to use.
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DUMMY_DHCPD_IP='10.0.0.1'
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# These scripts configure/deconfigure the VM interface on the bridge.
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QEMU_IFUP='/run/qemu-ifup'
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QEMU_IFDOWN='/run/qemu-ifdown'
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# The name of the dhcpd config file we make
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DHCPD_CONF_FILE='dhcpd.conf'
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function default_intf() {
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ip -json route show |
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jq -r '.[] | select(.dst == "default") | .dev'
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}
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# First step, we run the things that need to happen before we start mucking
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# with the interfaces. We start by generating the DHCPD config file based
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# on our current address/routes. We "steal" the container's IP, and lease
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# it to the VM once it starts up.
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/run/generate-dhcpd-conf $QEMU_BRIDGE > $DHCPD_CONF_FILE
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default_dev=`default_intf`
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# Now we start modifying the networking configuration. First we clear out
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# the IP address of the default device (will also have the side-effect of
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# removing the default route)
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ip addr flush dev $default_dev
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# Next, we create our bridge, and add our container interface to it.
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ip link add $QEMU_BRIDGE type bridge
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ip link set dev $default_dev master $QEMU_BRIDGE
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# Then, we toggle the interface and the bridge to make sure everything is up
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# and running.
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ip link set dev $default_dev up
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ip link set dev $QEMU_BRIDGE up
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# Prevent error about missing file
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touch /var/lib/misc/udhcpd.leases
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# Finally, start our DHCPD server
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udhcpd -I $DUMMY_DHCPD_IP -f $DHCPD_CONF_FILE &
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# And run the VM! A brief explaination of the options here:
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# -enable-kvm: Use KVM for this VM (much faster for our case).
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# -nographic: disable SDL graphics.
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# -serial mon:stdio: use "monitored stdio" as our serial output.
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exec qemu-system-x86_64 -enable-kvm -nographic -serial mon:stdio \
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"$@" \
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-device virtio-net,netdev=tap0 -netdev tap,id=tap0,ifname=Tap,script=$QEMU_IFUP,downscript=$QEMU_IFDOWN \
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-device virtio-scsi-pci,id=hw-synoboot,bus=pci.0,addr=0xa -drive file=/images/boot.img,if=none,id=drive-synoboot,format=raw,cache=none,aio=native,detect-zeroes=on \
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-device scsi-hd,bus=hw-synoboot.0,channel=0,scsi-id=0,lun=0,drive=drive-synoboot,id=synoboot0,bootindex=1 \
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-device virtio-scsi-pci,id=hw-synosys,bus=pci.0,addr=0xb -drive file=/images/system.img,if=none,id=drive-synosys,format=raw,cache=none,aio=native,detect-zeroes=on \
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-device scsi-hd,bus=hw-synosys.0,channel=0,scsi-id=0,lun=0,drive=drive-synosys,id=synosys0,bootindex=2 \
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-device virtio-scsi-pci,id=hw-userdata,bus=pci.0,addr=0xc -drive file=/images/data.img,if=none,id=drive-userdata,format=raw,cache=none,aio=native,detect-zeroes=on \
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-device scsi-hd,bus=hw-userdata.0,channel=0,scsi-id=0,lun=0,drive=drive-userdata,id=userdata0,bootindex=3
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