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Currently, memory device (def->mems) part of cmd line is generated before any controller. In majority of cases it doesn't matter because neither of memory devices live on a bus that's created by an exposed controller (e.g. there's no DIMM controller, at least not exposed). Except for virtio-mem and virtio-pmem, which do have a PCI address. And if it so happens that the device goes onto non-default bus (pci.0) starting such guest fails, because the controller that creates the desired bus wasn't processed yet. QEMU processes arguments in order. For instance, if virtio-mem has address with bus='0x01' QEMU refuses to start with the following message: Bus 'pci.1' not found Similarly for virtio-pmem. I've successfully tested migration and changing the order does not affect migration stream. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2047271 Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Andrea Bolognani <abologna@redhat.com>
44 lines
2.1 KiB
Plaintext
44 lines
2.1 KiB
Plaintext
LC_ALL=C \
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PATH=/bin \
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HOME=/tmp/lib/domain--1-QEMUGuest1 \
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USER=test \
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LOGNAME=test \
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XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
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XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
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XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
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QEMU_AUDIO_DRV=none \
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/usr/bin/qemu-system-i386 \
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-name guest=QEMUGuest1,debug-threads=on \
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-S \
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-object secret,id=masterKey0,format=raw,file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
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-machine pc,usb=off,dump-guest-core=off \
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-accel tcg \
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-m size=4194304k,slots=16,maxmem=8388608k \
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-realtime mlock=off \
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-smp 4,sockets=4,cores=1,threads=1 \
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-object memory-backend-file,id=ram-node0,mem-path=/var/lib/libvirt/qemu/ram/-1-QEMUGuest1/ram-node0,share=off,size=1073741824,host-nodes=0-3,policy=bind \
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-numa node,nodeid=0,cpus=0,memdev=ram-node0 \
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-object memory-backend-file,id=ram-node1,mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=on,prealloc=on,size=1073741824,host-nodes=0-3,policy=bind \
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-numa node,nodeid=1,cpus=1,memdev=ram-node1 \
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-object memory-backend-file,id=ram-node2,mem-path=/var/lib/libvirt/qemu/ram/-1-QEMUGuest1/ram-node2,share=off,size=1073741824,host-nodes=0-3,policy=bind \
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-numa node,nodeid=2,cpus=2,memdev=ram-node2 \
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-object memory-backend-file,id=ram-node3,mem-path=/var/lib/libvirt/qemu/ram/-1-QEMUGuest1/ram-node3,share=off,size=1073741824,host-nodes=3,policy=bind \
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-numa node,nodeid=3,cpus=3,memdev=ram-node3 \
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-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
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-display none \
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-no-user-config \
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-nodefaults \
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-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server=on,wait=off \
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-mon chardev=charmonitor,id=monitor,mode=control \
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-rtc base=utc \
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-no-shutdown \
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-no-acpi \
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-boot strict=on \
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-usb \
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-object memory-backend-file,id=memdimm0,mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=on,prealloc=on,size=536870912,host-nodes=0-3,policy=bind \
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-device pc-dimm,node=1,memdev=memdimm0,id=dimm0,slot=0,addr=4294967296 \
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-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \
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-device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 \
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-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \
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-msg timestamp=on
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