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Bug
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Resolution: Unresolved
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Undefined
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rhel-9.4
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Normal
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sst_virtualization
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ssg_virtualization
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17
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3
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QE ack, Dev ack
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False
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None
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None
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None
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None
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None
What were you trying to do that didn't work?
Please provide the package NVR for which bug is seen:
# rpm -q libvirt qemu-kvm libvirt-10.0.0-6.1.el9_4.x86_64 qemu-kvm-8.2.0-11.el9_4.x86_64
How reproducible:
100%
Steps to reproduce
1. Start a vm with virtio-mem device like below:
<memory model="virtio-mem">
<target>
<size unit="KiB">262144</size>
<node>0</node>
<block unit="KiB">2048</block>
<requested unit="KiB">262144</requested>
</target>
</memory>
2. Check the running guest virtio-mem device config xml and the current-size is not 0:
# virsh dumpxml vm1 ... <memory model='virtio-mem'> <target> <size unit='KiB'>262144</size> <node>0</node> <block unit='KiB'>2048</block> <requested unit='KiB'>262144</requested> <current unit='KiB'>262144</current> <address base='0x100000000'/> </target> <alias name='virtiomem0'/> <address type='pci' domain='0x0000' bus='0x07' slot='0x00' function='0x0'/> </memory>
3. Hot-unplug the virtio-mem deivce with below config xml:
# cat vmem.xml <memory model='virtio-mem'> <target> <size unit='KiB'>262144</size> <node>0</node> <block unit='KiB'>2048</block> <requested unit='KiB'>262144</requested> <address base='0x100000000'/> </target> </memory>
4. Error msg occurs like below:
# virsh detach-device vm1 vmem.xml error: Failed to detach device from vmem.xml error: internal error: unable to execute QEMU command 'device_del': virtio-mem device cannot get unplugged while 'size' != '0'
Expected results
Error msg mentioned 'size' != '0', 'size' suggests changing to 'current-size'. Otherwise the user may confuse the 'size' with the config <size unit="KiB">262144</size>
Actual results
Error msg like below:
error: internal error: unable to execute QEMU command 'device_del': virtio-mem device cannot get unplugged while 'size' != '0'
