(qemu) info migrate
globals:
store-global-state: on
only-migratable: off
send-configuration: on
send-section-footer: on
decompress-error-check: on
clear-bitmap-shift: 18
Migration status: completed
total time: 0 ms
(qemu) info memory-devices
Memory device [dimm]: "dimm0"
addr: 0x280000000
slot: 0
node: 0
size: 8589934592
memdev: /objects/mem1
hotplugged: false
hotpluggable: true
Memory device [dimm]: "dimm1"
addr: 0x480000000
slot: 1
node: 0
size: 2147483648
memdev: /objects/mem2
hotplugged: false
hotpluggable: true
(qemu) device_del dimm0
(qemu) device_del dimm1
(qemu) info memory-devices
Memory device [dimm]: "dimm0"
addr: 0x280000000
slot: 0
node: 0
size: 8589934592
memdev: /objects/mem1
hotplugged: false
hotpluggable: true
Memory device [dimm]: "dimm1"
addr: 0x480000000
slot: 1
node: 0
size: 2147483648
memdev: /objects/mem2
hotplugged: false
hotpluggable: true

{"execute": "query-balloon"}
{"return": {"actual": 19327352832}}
{"execute": "balloon", "arguments":{"value": 2147483648}}
{"return": {}}
{"execute": "device_del", "arguments": {"id": "balloon0"}}
{"return": {}}
{"execute": "query-balloon"}
{"return": {"actual": 19327352832}}

/usr/libexec/qemu-kvm \
-name 'vm1' \
-sandbox on \
-blockdev '{"node-name": "file_ovmf_code", "driver": "file", "filename": "/usr/share/OVMF/OVMF_CODE.secboot.fd", "auto-read-only": true, "discard": "unmap"}' \
-blockdev '{"node-name": "drive_ovmf_code", "driver": "raw", "read-only": true, "file": "file_ovmf_code"}' \
-blockdev '{"node-name": "file_ovmf_vars", "driver": "file", "filename": "/mnt/shared/avocado-vt-vm1_rhel8100-64-virtio-scsi-ovmf_qcow2_filesystem_VARS.raw", "auto-read-only": true, "discard": "unmap"}' \
-blockdev '{"node-name": "drive_ovmf_vars", "driver": "raw", "read-only": false, "file": "file_ovmf_vars"}' \
-machine pc-q35-rhel8.6.0,pflash0=drive_ovmf_code,pflash1=drive_ovmf_vars,nvdimm=on \
-device '{"id": "pcie-root-port-0", "driver": "pcie-root-port", "multifunction": true, "bus": "pcie.0", "addr": "0x1", "chassis": 1}' \
-device '{"id": "pcie-pci-bridge-0", "driver": "pcie-pci-bridge", "addr": "0x0", "bus": "pcie-root-port-0"}' \
-nodefaults \
-nographic \
-device '{"driver": "VGA", "bus": "pcie.0", "addr": "0x2"}' \
-device pvpanic,ioport=0x505,id=id5SK4co \
-device '{"id": "pcie-root-port-1", "port": 1, "driver": "pcie-root-port", "addr": "0x1.0x1", "bus": "pcie.0", "chassis": 2}' \
-device '{"id": "pcie-root-port-2", "port": 2, "driver": "pcie-root-port", "addr": "0x1.0x2", "bus": "pcie.0", "chassis": 3}' \
-device '{"id": "pcie-root-port-3", "port": 3, "driver": "pcie-root-port", "addr": "0x1.0x3", "bus": "pcie.0", "chassis": 4}' \
-device '{"id": "pcie-root-port-4", "port": 4, "driver": "pcie-root-port", "addr": "0x1.0x4", "bus": "pcie.0", "chassis": 5}' \
-device '{"id": "pcie-root-port-5", "port": 5, "driver": "pcie-root-port", "addr": "0x1.0x5", "bus": "pcie.0", "chassis": 6}' \
-device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pcie.0,addr=0x3 \
-drive id=drive_image1,if=none,snapshot=off,aio=threads,cache=none,format=qcow2,file=/mnt/shared/rhel8100-64-virtio-scsi-ovmf.qcow2 \
-device scsi-hd,id=image1,drive=drive_image1 \
-device '{"driver": "virtio-net-pci", "mac": "9a:6f:c3:79:a8:58", "id": "id1XH6qg", "netdev": "idhia6GM", "bus": "pcie-root-port-3", "addr": "0x0"}' \
-netdev tap,id=idhia6GM,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown,vhost=on \
-cpu 'Icelake-Server-noTSX' \
-smp 16,sockets=2,dies=1,cores=8,threads=1 \
-m 8G,slots=20,maxmem=24G \
-object '{"qom-type":"memory-backend-ram","id":"mem0","size": 8589934592}' \
-object '{"qom-type":"memory-backend-memfd","id":"mem1","reserve":true,"size":8589934592}' \
-object '{"qom-type":"memory-backend-file","id":"mem2","mem-path":"/dev/hugepages/mem2","size":2147483648}' \
-device '{"driver":"pc-dimm","id":"dimm0","memdev":"mem1"}' \
-numa node,memdev=mem0,cpus=0-15 \
-device '{"driver":"pc-dimm","id":"dimm1","memdev":"mem2"}'\
-vnc :1 \
-rtc base=utc,clock=host,driftfix=slew \
-boot order=cdn,once=c,menu=off,strict=off \
-enable-kvm \
-monitor stdio \
-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pcie-root-port-4","addr":"0x0"}' \
-serial tcp:0:1234,server,nowait \
-monitor unix:/tmp/monitor3,server,nowait \
-qmp tcp:0:3333,server,nowait