Hi All, I'm facing the problem that after adding disks to guest VM, the device target path changed (My ovirt version is 4.3). For example: Before adding a disk: virsh # domblklist <vmname> Target Source --------------------------------------------------------- hdc - vda /dev/mapper/3600a09803830386546244a546d494f53 vdb /dev/mapper/3600a09803830386546244a546d494f54 * vdc /dev/mapper/3600a09803830386546244a546d494f55* vdd /dev/mapper/3600a09803830386546244a546d494f56 vde /dev/mapper/3600a09803830386546244a546d494f57 vdf /dev/mapper/3600a09803830386546244a546d494f58 After adding a disk, and then shutdown and start the VM: virsh # domblklist <vmname> Target Source --------------------------------------------------------- hdc - vda /dev/mapper/3600a09803830386546244a546d494f53 vdb /dev/mapper/3600a09803830386546244a546d494f54 *vdc /dev/mapper/3600a09803830386546244a546d494f6c* * vdd /dev/mapper/3600a09803830386546244a546d494f55* vde /dev/mapper/3600a09803830386546244a546d494f56 vdf /dev/mapper/3600a09803830386546244a546d494f57 vdg /dev/mapper/3600a09803830386546244a546d494f58 The devices' multipath doesn't map to the same target path as before, so in my VM the /dev/vdc doesn't point to the old /dev/mapper/3600a09803830386546244a546d494f55 anymore. Anybody knows how can I make the device path mapping fixed without being changed after adding or removing disks. Many thanks in advance. Joy