WARNING - if an RPC times out you will crash older UML's.

WARNING - if an RPC times out you will crash older UML's.

Update your user mode linux to the 2.4.18 um15 + extra patch
  take source from ftp.lustre.org:/pub/people/robert
[call_usermode_helper has a bug in older versions of UML]

- new infrastructure for MDS failover recovery
  - recovd replaces the ha daemon. Now located in RPC directory
  - this comes with a service daemon to answer connect calls
  - wrapped it in an obd, for management purposes, and to be able
    to run multiple daemons on one system eventually
- commit callback daemon added to the lustre_lite directory
- removed small amounts of dead code from the rpc directory
- this code has seen little testing
- added the configuration management section to the master document