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.
