NSD nodes cannot connect to storage after upgrading from SLES 15 SP1 to SP2

After upgrading from SLES 15 SP1 to SP2, NSD nodes might be unable to connect to the storage.

This occurs because of a change in the way regular expressions are evaluated in SLES 15. After this change, glibc-provided regular expressions are used in SLES 15. Therefore, to match an arbitrary string, you must now use .* instead of *.

Workaround:
  1. In the blocked section of the /etc/multipath.conf file, replace * with .*.
  2. Restart multipathd.service by issuing the systemctl restart multipathd.service command.
  3. Verify that LUNs from storage can be detected by issuing the multipath -ll command.