glusterfs.git/xlators/nfs/server/src/nlm4.h, branch v3.5.4beta1

dual license: update remaining files with correct license text

2013-10-24T14:58:19+00:00

Sayan Saha has previously approved changing everthing to dual license
but somehow we have missed changing these files.

I am explicitly not updating the copyright dates as nothing else that's
copyrightable has changed in these files with the license change

Change-Id: Ia965eeb7168447d69e28e939ad95ee388873b6e4
BUG: 951549
Signed-off-by: Kaleb S. KEITHLEY 
Reviewed-on: http://review.gluster.org/6128
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

nlm: use virtual ip of server to connect to client

2013-01-18T11:50:33+00:00

In cases where the servers use virtual ip's, this commit
makes sure we use them and not the physical ip.

This change also refactors code around nlm4_establish_callback
by sending granted msg only after a connection establishment,
and removing the separate thread creation.

Change-Id: I087362c547a25aa52ef7fc6653845a3863466ee6
BUG: 888283
Signed-off-by: Rajesh Amaravathi 
Reviewed-on: http://review.gluster.org/4326
Reviewed-by: Kaleb KEITHLEY 
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

nlm: do not use killall command to kill rpc.statd

2012-05-22T01:33:26+00:00

killall command will kill the rpc.statd process only in normal mode.
If the process is running in valgrind mode, then killall is not able
to kill rpc.statd and several instances of rpc.statd will be running
for every restart of the nfs server (graph changes etc).

So to avoid that get the pid of rpc.statd using /var/run/rpc.statd.pid
and send SIGKILL signal to that pid to accomplish what killall command
was doing.

Change-Id: I2509bf918ddd0dcdd9a4562ee23f13488c7a5979
BUG: 815756
Signed-off-by: Raghavendra Bhat 
Reviewed-on: http://review.gluster.com/3225
Tested-by: Gluster Build System 
Reviewed-by: Amar Tumballi 
Reviewed-by: Anand Avati

nfs/nlm: procedures for PC clients

2012-05-17T09:12:49+00:00

*  This change introduces four NLMv4 procedures:

   NM_LOCK, SHARE, UNSHARE and FREE_ALL.

   These are used by PC clients (windows/dos) to control access
   to files.

   1. NM_LOCK: this lock is not monitored by statd.

   2. SHARE: A share reservation is a lock on the whole file
      that is taken whenever a file is opened on windows clients.
      This has ACCESS (N, R, W, RW) and DENY MODE (N, R, W, RW).
        ACCESS:    mode of access requested by the client;
        DENY MODE: what the requesting client wants to
                   deny other clients.

   3. UNSHARE: remove a share reservation obtained by SHARE.
      Called while closing a file.

   4. FREE_ALL: remove all share reservations and locks,
      both monitored and unmonitored, of the calling client.

*  lock and nm_lock use a common function with only
   a flag conveying whether or not to monitor a lock.

*  NOTES:
   1. SHARE reservations are not STACK_WIND'd to subsequent xlators.
      These are maintained in-memory in the nfs xlator.

   2. Consequently, for SHARE reservations to work effectively,
      all PC clients  *must* mount from the same gNfs server.
      Not doing so will result in different servers maintaining
      separate SHARE reservations which will not be enforced
      for obvious reasons.

Change-Id: Id4f22670a94ed58691a6a7f4c80aa8c11421a277
BUG: 800287
Signed-off-by: Rajesh Amaravathi 
Reviewed-on: http://review.gluster.com/3212
Tested-by: Gluster Build System 
Reviewed-by: Krishna Srinivas

nlm: register client name with statd for blocking, nonblocking and reclaim lock calls

2012-04-20T13:01:50+00:00

Change-Id: If983f7b2f94703442e0745c5cbd2701edb2a972a
BUG: 809362
Signed-off-by: Krishna Srinivas 
Reviewed-on: http://review.gluster.com/3097
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

NLM - Network Lock Manger V4

2012-02-20T15:26:51+00:00

Change-Id: Ic31b8bb10a28408da2a623f4ecc0c60af01c64af
BUG: 795421
Signed-off-by: Krishna Srinivas 
Reviewed-on: http://review.gluster.com/2711
Tested-by: Gluster Build System 
Reviewed-by: Amar Tumballi