[ovirt-devel] Issue: Device path changed after adding disks to guest VM

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