Access to LUNs

[All Linux Operating Systems] Access LUNs through device-mapper or individual partition paths to ensure access to the LUNs.

The Linux device-mapper creates paths in the /dev/mapper/directory to represent multipath Oracle FS System LUNs and partitions. With the exception of the situation described in the instructions for partitioning and formatting LUN disks, access to multipath LUNs and their partitions must be through these paths.

If a multipath partition is configured into /etc/fstab, omit the sixth field of its entry (fs_passno), or set it to 0 to prevent fsck from running automatically on the partition during a system boot. This is because device-mapper is not yet configured at the time fsck runs during boot, so the multipath devices are not accessible.

Important! Failure to disable fs_passno causes host boot failure.