lfs wbc commands

# lfs wbc cache $DIR

If $DIR is an empty directory, try to acquire WBC EX lock from MDT for $DIR;
If $DIR is not an empty directory, add hint to the directory $DIR to indicate that:

• all new creating sub dirs ( not include regular files?) should obtain the EX lock;
• New sub dirs create on MDT synchronously.
• New sub dirs are in (P|S) state;

# lfs wbc list $MOUNT

List all root WBC directories on a client.

# lfs wbc uncache $DIR

Sync and remove a cached root WBC directory $DIR.

#lfs wbc state $file

Display the WBC state of the file $file.

lctl wbc commands

LU-13012 WBC: Rule based auto WBC;

# lctl wbc /mnt/lustre [--data-on-pcc] [--metadata-on-pcc] [--device /mnt/pcc] [--memfs]...