[LUDOC-511] Add documentation for special/reserved pool name "ignore", "none and "inherit"

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0 Manual
• Assignee: Lustre Manual Triage
• Reporter: Etienne Aujames

Description

LU-15707 adds reserved pool name "inherit" and "ignore" to respectively create a file without a pool or to force a file to inherit from the parent pool (instead of the last component for PFL files).

There is no documentation about reserved pool name, so let's add one.

Issue Links

• is related to: LU-15658 Interop sanity-flr test_0b test_0c test_0e test_0f: verify pool failed != flash
• is related to: LU-15707 Unable to create file without a pool with a pool define on the parent or on the fs root.