This block, the log group manager, is responsible for handling
the undo logs for Disk Data tables. It consists of these files
in the storage/ndb/src/kernel/blocks
directory:
lgman.cpp: Implements
Lgman for adding, dropping, and working
with log files and file groups.
lgman.hpp: Contains the definition for
the Lgman class, used to handle undo log
files. Handles allocation of log buffer space.