Regenerating persistent device names

The persistent device naming feature makes the names of disk devices persistent across system reboots. DDL assigns device names according to the persistent device name database.

If operating system-based naming is selected, each disk name is usually set to the name of one of the paths to the disk. After hardware reconfiguration and a subsequent reboot, the operating system may generate different names for the paths to the disks. Therefore, the persistent device names may no longer correspond to the actual paths. This does not prevent the disks from being used, but the association between the disk name and one of its paths is lost.

Similarly, if enclosure-based naming is selected, the device name depends on the name of the enclosure and an index number. If a hardware configuration changes the order of the LUNs exposed by the array, the persistent device name may not reflect the current index.

To regenerate persistent device names