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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>
38 lines
1.7 KiB
Plaintext
38 lines
1.7 KiB
Plaintext
LC_ALL=C \
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PATH=/bin \
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HOME=/tmp/lib/domain--1-instance-00000092 \
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USER=test \
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LOGNAME=test \
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XDG_DATA_HOME=/tmp/lib/domain--1-instance-00000092/.local/share \
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XDG_CACHE_HOME=/tmp/lib/domain--1-instance-00000092/.cache \
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XDG_CONFIG_HOME=/tmp/lib/domain--1-instance-00000092/.config \
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/usr/bin/qemu-system-x86_64 \
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-name guest=instance-00000092,debug-threads=on \
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-S \
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-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/tmp/lib/domain--1-instance-00000092/master-key.aes"}' \
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-machine pc-i440fx-2.3,usb=off,dump-guest-core=off,nvdimm=on \
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-accel kvm \
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-cpu qemu64 \
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-m size=14680064k,slots=16,maxmem=1099511627776k \
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-overcommit mem-lock=off \
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-smp 8,sockets=1,dies=1,cores=8,threads=1 \
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-object '{"qom-type":"memory-backend-memfd","id":"ram-node0","hugetlb":true,"hugetlbsize":2097152,"share":true,"prealloc":true,"size":15032385536,"host-nodes":[3],"policy":"preferred"}' \
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-numa node,nodeid=0,cpus=0-7,memdev=ram-node0 \
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-uuid 126f2720-6f8e-45ab-a886-ec9277079a67 \
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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,fd=1729,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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-device '{"driver":"piix3-usb-uhci","id":"usb","bus":"pci.0","addr":"0x1.0x2"}' \
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-object '{"qom-type":"memory-backend-file","id":"memnvdimm0","mem-path":"/tmp/nvdimm","share":true,"prealloc":true,"size":536870912,"host-nodes":[3],"policy":"preferred"}' \
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-device '{"driver":"nvdimm","node":0,"memdev":"memnvdimm0","id":"nvdimm0","slot":0}' \
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-audiodev '{"id":"audio1","driver":"none"}' \
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-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x3"}' \
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-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
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-msg timestamp=on
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