glusterfs.git/xlators/nfs/server/src/nlm4.c, branch v3.3.1qa1

nfs/nlm: statedump of locks

2012-07-16T09:24:54+00:00

This change allows statedump of nlm locks
giving number of clients, number of locks
each client holds and the files on which lock(s)
is/are held.

Change-Id: I6341c12ec58005ef71b93b316b527e610ff7ee8f
BUG: 824804
Signed-off-by: Rajesh Amaravathi 
Reviewed-on: http://review.gluster.com/3492
Tested-by: Gluster Build System 
Reviewed-by: Pranith Kumar Karampuri 
Reviewed-by: Vijay Bellur

nfs/nlm: when setting nlmclnt->rpc_clnt, do not overwrite old rpc_clnt

2012-07-03T11:51:36+00:00

Change-Id: I01a1c0c0c8d3402b8fe061258001eea2c0029e83
BUG: 819518
Signed-off-by: Krishna Srinivas 
Reviewed-on: http://review.gluster.com/3433
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

nfs/nlm: avoid duplicate replies for nlm procedures

2012-05-29T11:29:38+00:00

The way NLM handles errors and corresponding response
messages has been simplified to avoid duplicate replies
in case of failures.

Also, unlock_cbk and unlock_fd_resume functions are moved
in with other unlock functions.

Change-Id: I94100aa3c8de95dabebed4598651bbcd49d95782
BUG: 824316
Signed-off-by: Rajesh Amaravathi 
Reviewed-on: http://review.gluster.com/3462
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

nfs/nlm: nlm-unlock call should reply success in case it is not able to find the lock in the list.

2012-05-26T07:57:12+00:00

Change-Id: I84b298702c445320082ef03de90c924931f1a1e1
BUG: 822384
Signed-off-by: Krishna Srinivas 
Reviewed-on: http://review.gluster.com/3451
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

nfs/nlm: procedures for PC clients

2012-05-18T12:53:10+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/3356
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

nlm: use correct subvolume when opening the file

2012-04-27T05:25:43+00:00

Change-Id: Ia0a482c89f10481184dc8f0f5b27cf6612ac114a
BUG: 816476
Signed-off-by: Krishna Srinivas 
Reviewed-on: http://review.gluster.com/3233
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

nfs/nlm: remove /var/run/rpc.statd.pid before starting rpc.statd.

2012-04-23T07:20:05+00:00

Sometimes rpc.statd fails to start if rpc.statd.pid exists.

Change-Id: Ic6feb375330fceb8dd6c35330757738fb5cbe16f
BUG: 814265
Signed-off-by: Krishna Srinivas 
Reviewed-on: http://review.gluster.com/3206
Tested-by: Gluster Build System 
Tested-by: Saurabh Jain 
Reviewed-by: Vijay Bellur

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: send sm-notify to clients whenever the nfs server is restarted so that clients reclaim the locks.

2012-04-17T15:26:06+00:00

Change-Id: I0a8e291ad0a78e2e68070b1d289d32a786da8da2
BUG: 802885
Signed-off-by: Krishna Srinivas 
Reviewed-on: http://review.gluster.com/3096
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

nfs/nlm: dummy actor for FREE_ALL procedure

2012-04-05T12:10:40+00:00

NLM4_FREE_ALL rpc procedure has been provided nlm's
null procedure as actor to facilitate windows Nfs mounts.

NOTE: windows Nfs needs several other NLM procedures to work.
As a result, this patch only makes it possible to do a working
mount of a volume with "nolock" option in windows.
*Windows mount WITHOUT "nolock" option does NOT work as expected*

Change-Id: Ie163982497871312c5bb15f8c141fef460cadc34
BUG: 800287
Signed-off-by: Rajesh Amaravathi 
Reviewed-on: http://review.gluster.com/3063
Tested-by: Gluster Build System 
Reviewed-by: Krishna Srinivas