Hi, this is an ongoing issue. I don't know whether I ever have addresses this here, but it's still annoying. I am using debian unstable, libvirt 10.5.0, virt-manager 4.1.0, qemu 9.0.2. I work through virt-manager, rarely I use virsh. I regularly configure virtual disks that are located on a luks-encrypted LVM volume. when unlocked, the block devices appears as /dev/mapper/foo and is a symlink to a ../dm-xx node with xx being a random number, ../dm-xx being a regular block device. To facilitate this, I have defined a storage pool with this XML: <pool type="dir"> <name>mapper</name> <uuid></uuid> <capacity unit="bytes">24598757376</capacity> <allocation unit="bytes">0</allocation> <available unit="bytes">24598757376</available> <source> </source> <target> <path>/dev/mapper</path> <permissions> <mode>0755</mode> <owner>0</owner> <group>0</group> </permissions> </target> </pool> This is necessary as the storage type "LVM volume group" now insists on a volume group name, and the DM mappings created by LUKS dont have a volume group name. When I add a disk to a VM from this storage pool, it generates the XML: <disk type="file" device="disk"> <driver name="qemu" type="raw"/> <source file="/dev/mapper/wintest"/> <target dev="vda" bus="virtio"/> <address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/> </disk> qemu won't start with this settings: error: Failed to start domain 'win11test' error: internal error: QEMU unexpectedly closed the monitor (vm='win11test'): 2024-07-28T15:20:25.250387Z qemu-system-x86_64: -blockdev {"driver":"file","filename":"/dev/mapper/wintest","node-name":"libvirt-1-storage","read-only":false}: 'file' driver requires '/dev/mapper/wintest' to be a regular file Changing the XML to <disk type="block" device="disk"> <driver name="qemu" type="raw"/> <source dev="/dev/mapper/wintest"/> <target dev="vda" bus="virtio"/> <address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/> </disk> (note type="block" and "source dev") makes the VM work. Can virt-manager somehow be coaxed into generating XML that works here? If not, is this a virt-manager issue or should qemu just accept type="file" and "source file")? Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402 Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421