# cd /etc/libvirt/qemu # cat FooBar.xml <!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh edit FooBar or other application using the libvirt API. --> <domain type='kvm'> <name>FooBar</name> <uuid>76d18158-77a0-233c-ac89-b415c341927d</uuid> <memory unit='KiB'>2097152</memory> <currentMemory unit='KiB'>513024</currentMemory> <vcpu>2</vcpu> <os> <type arch='x86_64' machine='pc-0.12'>hvm</type> <boot dev='hd'/> <bootmenu enable='yes'/> </os> <features> <acpi/> </features> <cpu mode='custom' match='exact'> <model fallback='allow'>Penryn</model> </cpu> <clock offset='utc'/> <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='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/home/images/disk1.img'/> <target dev='hda' bus='ide'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/home/images/data-img.img'/> <target dev='hdb' bus='ide'/> <address type='drive' controller='0' bus='0' target='0' unit='1'/> </disk> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <controller type='usb' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <interface type='bridge'> <mac address='52:54:00:9d:be:8f'/> <source bridge='br0'/> <filterref filter='clean-traffic'> <parameter name='CTRL_IP_LEARNING' value='dhcp'/> </filterref> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0' keymap='en-us'> <listen type='address' address='0.0.0.0'/> </graphics> <video> <model type='cirrus' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </memballoon> </devices> </domain> # cat tmpvm.xml <domain type='kvm' id='354'> <name>FooBar</name> <memory>2097152</memory> <currentMemory>513024</currentMemory> <vcpu>2</vcpu> <os> <type arch='x86_64' machine='pc-0.12'>hvm</type> <boot dev='hd'/> <bootmenu enable='yes'/> </os> <features> <acpi/> </features> <cpu mode='custom' match='exact'> <model fallback='allow'>Penryn</model> </cpu> <clock offset='utc'/> <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='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/home/images/disk1.img'/> <target dev='hda' bus='ide'/> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/home/images/data-img.img'/> <target dev='hdb' bus='ide'/> <alias name='ide0-0-1'/> <address type='drive' controller='0' bus='0' unit='1'/> </disk> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <serial type='pty'> <source path='/dev/pts/18'/> <target port='0'/> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/18'> <source path='/dev/pts/18'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> <tpm type='libtpms'/> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5900' autoport='yes' listen='0.0.0.0' keymap='en-us'> <listen type='address' address='0.0.0.0'/> </graphics> <video> <model type='cirrus' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <alias name='balloon0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </memballoon> </devices> </domain> # service libvirtd restart # virsh list --all Id Name State ---------------------------------------------------- - FooBar shut off - FooBar shut off Granted, a user can only get into this situation if they muck around in /etc/libvirt/qemu, but we should protect against this, since lack of name uniqueness upsets virt-manager pretty bad at least, and it's a confusing denial of service.
Cole, this really isn't a bug since it's well documented that messing with the persistent xml on disk will have undefined results and likely trash the system. If you have a non-invasive way to make this particular scenario less painful, you should propose it on list, though.
I cannot reproduce this with the git version: 2015-07-28 16:10:20.087+0000: 25014: error : virDomainObjListAddLocked:2804 : operation failed: domain 'f21live' already exists with uuid 67e359e2-e0b6-4598-84dd-5a9027d44f83