BMR restore may take significant amount of time for formatting and volume creation step

Due to operating system changes, a Bare Metal Restore (BMR) restore may take significant time during the formatting step when there are logical volumes in the system being restore. Red Hat Enterprise Linux 8 has introduced some changes for LVM2 which causes scanning of the udev database. This scanning takes a significant amount of time for LVM-related operations.

When you perform a BMR restore, you may see the following message in the bmrrst logs:

WARNING: Device * not initialized in udev database even after waiting 10000000 microseconds.

The BMR restore still succeeds, despite the longer restore time.