The domain.xml: <domain type='kvm'> <name>rotest</name> <uuid>b4aa0288-8886-42df-abfd-4c8f729e1330</uuid> <memory unit='KiB'>2048000</memory> <currentMemory unit='KiB'>2048000</currentMemory> <vcpu placement='static'>2</vcpu> <os> <type arch='x86_64' machine='pc-i440fx-2.7'>hvm</type> <kernel>/var/lib/libvirt/pink/kernel</kernel> <cmdline>root=/dev/sda ro panic=300 systemd.show_status=1 systemd.unit=graphical.target quiet</cmdline> <boot dev='hd'/> </os> <features> <acpi/> </features> <cpu mode='custom' match='exact' check='none'> <model fallback='forbid'>qemu64</model> </cpu> <clock offset='utc'> <timer name='rtc' tickpolicy='catchup'/> <timer name='pit' tickpolicy='delay'/> <timer name='hpet' present='no'/> </clock> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/qemu-system-x86_64</emulator> <disk type='block' device='disk'> <driver name='qemu' type='raw'/> <source dev='/dev/nvmvg/rotest'/> <target dev='sda' bus='scsi'/> <readonly/> <shareable/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source dev='/dev/nvmvg/rotest-var'/> <target dev='sdb' bus='scsi'/> <address type='drive' controller='0' bus='0' target='0' unit='1'/> </disk> <controller type='pci' index='0' model='pci-root'/> <controller type='scsi' index='0' model='virtio-scsi'> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </controller> <controller type='usb' index='0' model='piix3-uhci'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <graphics type='spice' autoport='yes'> <listen type='address'/> <gl enable='no' rendernode='/dev/dri/by-path/pci-0000:00:02.0-render'/> </graphics> <video> <model type='virtio' heads='1' primary='yes'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </memballoon> </devices> </domain>
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The qemu command: 2020-04-27 11:57:11.720+0000: starting up libvirt version: 6.0.0, qemu version: 4.2.0, kernel: 5.4.28-gentoo, hostname: gentoo LC_ALL=C \ PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin \ HOME=/var/lib/libvirt/qemu/domain-10-rotest \ XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-10-rotest/.local/share \ XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-10-rotest/.cache \ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-10-rotest/.config \ QEMU_AUDIO_DRV=spice \ /usr/bin/qemu-system-x86_64 \ -name guest=rotest,debug-threads=on \ -S \ -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-10-rotest/master-key.aes \ -machine pc-i440fx-2.7,accel=kvm,usb=off,dump-guest-core=off \ -cpu qemu64 \ -m 2000 \ -overcommit mem-lock=off \ -smp 2,sockets=2,cores=1,threads=1 \ -uuid b4aa0288-8886-42df-abfd-4c8f729e1330 \ -no-user-config \ -nodefaults \ -chardev socket,id=charmonitor,fd=32,server,nowait \ -mon chardev=charmonitor,id=monitor,mode=control \ -rtc base=utc,driftfix=slew \ -global kvm-pit.lost_tick_policy=delay \ -no-hpet \ -no-shutdown \ -boot strict=on \ -kernel /var/lib/libvirt/pink/kernel \ -append 'root=/dev/sda ro panic=300 systemd.show_status=1 systemd.unit=graphical.target quiet' \ -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \ -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x5 \ -blockdev '{"driver":"host_device","filename":"/dev/nvmvg/rotest","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-2-format","read-only":true,"driver":"raw","file":"libvirt-2-storage"}' \ -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,device_id=drive-scsi0-0-0-0,share-rw=on,drive=libvirt-2-format,id=scsi0-0-0-0,bootindex=1 \ -blockdev '{"driver":"host_device","filename":"/dev/nvmvg/rotest-var","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"raw","file":"libvirt-1-storage"}' \ -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=1,device_id=drive-scsi0-0-0-1,drive=libvirt-1-format,id=scsi0-0-0-1,write-cache=on \ -spice port=5900,addr=192.168.1.9,disable-ticketing,seamless-migration=on \ -device virtio-vga,id=video0,max_outputs=1,bus=pci.0,addr=0x2 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 \ -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ -msg timestamp=on 2020-04-27T11:57:11.804028Z qemu-system-x86_64: -blockdev {"driver":"host_device","filename":"/dev/nvmvg/rotest","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"}: The device is not writable: Permission denied 2020-04-27 11:57:11.805+0000: shutting down, reason=failed
The domain.xml: rotest< /name> b4aa0288- 8886-42df- abfd-4c8f729e13 30</uuid> >2048000< /memory> >2048000< /currentMemory> 'static' >2</vcpu> 'pc-i440fx- 2.7'>hvm< /type> /var/lib/ libvirt/ pink/kernel< /kernel> root=/dev/ sda ro panic=300 systemd. show_status= 1 systemd. unit=graphical. target quiet</cmdline> 'forbid' >qemu64< /model> 'catchup' /> 'delay' /> destroy< /on_poweroff> restart< /on_reboot> destroy< /on_crash> /usr/bin/ qemu-system- x86_64< /emulator> nvmvg/rotest' /> nvmvg/rotest- var'/> virtio- scsi'> '/dev/dri/ by-path/ pci-0000: 00:02.0- render' />
<domain type='kvm'>
<name>
<uuid>
<memory unit='KiB'
<currentMemory unit='KiB'
<vcpu placement=
<os>
<type arch='x86_64' machine=
<kernel>
<cmdline>
<boot dev='hd'/>
</os>
<features>
<acpi/>
</features>
<cpu mode='custom' match='exact' check='none'>
<model fallback=
</cpu>
<clock offset='utc'>
<timer name='rtc' tickpolicy=
<timer name='pit' tickpolicy=
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>
<on_reboot>
<on_crash>
<devices>
<emulator>
<disk type='block' device='disk'>
<driver name='qemu' type='raw'/>
<source dev='/dev/
<target dev='sda' bus='scsi'/>
<readonly/>
<shareable/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='block' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source dev='/dev/
<target dev='sdb' bus='scsi'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<controller type='pci' index='0' model='pci-root'/>
<controller type='scsi' index='0' model='
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</controller>
<controller type='usb' index='0' model='piix3-uhci'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='spice' autoport='yes'>
<listen type='address'/>
<gl enable='no' rendernode=
</graphics>
<video>
<model type='virtio' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</memballoon>
</devices>
</domain>
------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ---
The qemu command: local/sbin: /usr/local/ bin:/usr/ sbin:/usr/ bin:/sbin: /bin \ lib/libvirt/ qemu/domain- 10-rotest \ HOME=/var/ lib/libvirt/ qemu/domain- 10-rotest/ .local/ share \ HOME=/var/ lib/libvirt/ qemu/domain- 10-rotest/ .cache \ HOME=/var/ lib/libvirt/ qemu/domain- 10-rotest/ .config \ DRV=spice \ qemu-system- x86_64 \ debug-threads= on \ id=masterKey0, format= raw,file= /var/lib/ libvirt/ qemu/domain- 10-rotest/ master- key.aes \ 2.7,accel= kvm,usb= off,dump- guest-core= off \ 2,cores= 1,threads= 1 \ 8886-42df- abfd-4c8f729e13 30 \ id=charmonitor, fd=32,server, nowait \ charmonitor, id=monitor, mode=control \ driftfix= slew \ lost_tick_ policy= delay \ libvirt/ pink/kernel \ show_status= 1 systemd. unit=graphical. target quiet' \ uhci,id= usb,bus= pci.0,addr= 0x1.0x2 \ scsi-pci, id=scsi0, bus=pci. 0,addr= 0x5 \ :"host_ device" ,"filename" :"/dev/ nvmvg/rotest" ,"node- name":" libvirt- 2-storage" ,"auto- read-only" :true," discard" :"unmap" }' \ name":" libvirt- 2-format" ,"read- only":true, "driver" :"raw", "file": "libvirt- 2-storage" }' \ bus=scsi0. 0,channel= 0,scsi- id=0,lun= 0,device_ id=drive- scsi0-0- 0-0,share- rw=on,drive= libvirt- 2-format, id=scsi0- 0-0-0,bootindex =1 \ :"host_ device" ,"filename" :"/dev/ nvmvg/rotest- var","node- name":" libvirt- 1-storage" ,"cache" :{"direct" :true," no-flush" :false} ,"auto- read-only" :true," discard" :"unmap" }' \ name":" libvirt- 1-format" ,"read- only":false, "cache" :{"direct" :true," no-flush" :false} ,"driver" :"raw", "file": "libvirt- 1-storage" }' \ bus=scsi0. 0,channel= 0,scsi- id=0,lun= 1,device_ id=drive- scsi0-0- 0-1,drive= libvirt- 1-format, id=scsi0- 0-0-1,write- cache=on \ addr=192. 168.1.9, disable- ticketing, seamless- migration= on \ vga,id= video0, max_outputs= 1,bus=pci. 0,addr= 0x2 \ balloon- pci,id= balloon0, bus=pci. 0,addr= 0x7 \ deny,elevatepri vileges= deny,spawn= deny,resourceco ntrol=deny \ 27T11:57: 11.804028Z qemu-system-x86_64: -blockdev {"driver" :"host_ device" ,"filename" :"/dev/ nvmvg/rotest" ,"node- name":" libvirt- 2-storage" ,"auto- read-only" :true," discard" :"unmap" }: The device is not writable: Permission denied
2020-04-27 11:57:11.720+0000: starting up libvirt version: 6.0.0, qemu version: 4.2.0, kernel: 5.4.28-gentoo, hostname: gentoo
LC_ALL=C \
PATH=/usr/
HOME=/var/
XDG_DATA_
XDG_CACHE_
XDG_CONFIG_
QEMU_AUDIO_
/usr/bin/
-name guest=rotest,
-S \
-object secret,
-machine pc-i440fx-
-cpu qemu64 \
-m 2000 \
-overcommit mem-lock=off \
-smp 2,sockets=
-uuid b4aa0288-
-no-user-config \
-nodefaults \
-chardev socket,
-mon chardev=
-rtc base=utc,
-global kvm-pit.
-no-hpet \
-no-shutdown \
-boot strict=on \
-kernel /var/lib/
-append 'root=/dev/sda ro panic=300 systemd.
-device piix3-usb-
-device virtio-
-blockdev '{"driver"
-blockdev '{"node-
-device scsi-hd,
-blockdev '{"driver"
-blockdev '{"node-
-device scsi-hd,
-spice port=5900,
-device virtio-
-device virtio-
-sandbox on,obsolete=
-msg timestamp=on
2020-04-
2020-04-27 11:57:11.805+0000: shutting down, reason=failed