Adding a new FOP

Steps to be followed when adding a new FOP to GlusterFS:

  1. Edit glusterfs.h and add a GF_FOP_* constant.
  2. Edit xlator.[ch] and:
    • add the new prototype for fop and callback.
    • edit xlator_fops structure.
  3. Edit xlator.c and add to fill_defaults.
  4. Edit protocol.h and add struct necessary for the new FOP.
  5. Edit defaults.[ch] and provide default implementation.
  6. Edit call-stub.[ch] and provide stub implementation.
  7. Edit common-utils.c and add to gf_global_variable_init().
  8. Edit client-protocol and add your FOP.
  9. Edit server-protocol and add your FOP.
  10. Implement your FOP in any translator for which the default implementation is not sufficient.