[Linux-HA] Re: Stale NFS File Handles, even with fsid=1234

[Stefan Lasiewski]

In addition, I see these NFS options in the 'rpc.statd' man page.
These sound relevant, but I cannot find additional documentation on
these options:


--------------------------
SIGNALS

SIGUSR1 causes rpc.statd to re-read the notify list from disk and send
notifications to clients. This can be used in High Availability NFS
(HA-NFS) environments to notify clients  to  reacquire file locks upon
takeover of an NFS export from another server.

--------------------------

-N   Causes statd to run in the notify-only mode. When started in this
mode, the statd  program
will  check  its state directory, send notifications to any monitored
nodes, and exit once
the notifications have been sent. This mode is used to enable Highly
Available NFS  imple-
mentations (i.e. HA-NFS).

-H,  --ha-callout prog
Specify  a  high  availability callout program, which will receive
callouts for all client
monitor and unmonitor requests. This allows rpc.statd to be used in  a
 High  Availability
NFS  (HA-NFS)  environment. The program will be run with 3 arguments:
The first is either
add-client or del-client depending on the reason for the callout.  The
second will be  the
name of the client.  The third will be the name of the server as known
to the client.