glusterfs.git/rpc/rpc-lib/src/rpc-clnt.c, branch v3.3.0qa23

rpc/clnt: handle PARENT_DOWN event appropriately

2012-02-21T09:42:42+00:00

Change-Id: I4644e944bad4d240d16de47786b9fa277333dba4
BUG: 767862
Signed-off-by: Raghavendra G 
Signed-off-by: Amar Tumballi 
Reviewed-on: http://review.gluster.com/2735
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

protocol/client,server: fcntl lock self healing.

2012-02-20T12:45:31+00:00

Currently(with out this patch), on a disconnect the server cleans up
the transport which inturn closes the fd's and releases the locks acquired on
those fd's by that client. On a reconnect, client just reopens the fd's but
doesn't reacquire the locks. The application that had previously acquired
the locks still is under the assumption that it is the owner of those locks
which might have been granted to other clients(if they request) by the server
leading to data corruption.

This patch allows the client to reacquire the fcntl locks (held on the fd's)
during client-server handshake.

* The server identifies the client via process-uuid-xl (which is a combination
  of uuid and client-protocol name, it is assumed to be unique) and lk-version
  number.

* The client maintains a list of process-uuid-xl, lk-version pair for each
  accepted connection. On a connect, the server traverses the list for a
  matching pair, if a matching pair is not found the the server returns
  lk-version with value 0, else it returns the lk-version it has in store.

* On a disconnect, the server and client enter grace period, and on the
  completion of the grace period, the client bumps up its lk-version number
  (which means, it will reacquire the locks the next time) and the server will
  distroy the connection. If reconnection happens within the grace period, the
  server will find the matching (process-uuid-xl, lk-version) pair in its list
  which guarantees that the fd's and there corresponding locks are still valid
  for this client.

Configurable options:
  To set grace-timeout, the following options are
    option server.grace-timeout value
    option client.grace-timeout value

  To enable or disable the lk-heal,
    option lk-heal [on|off]

gluster volume set command can be used to configurable options
Change-Id: Id677ef1087b300d649f278b8b2aa0d94eae85ed2
BUG: 795386
Signed-off-by: Mohammed Junaid 
Reviewed-on: http://review.gluster.com/2766
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

iobuf: use 'iobuf_get2()' to get variable sized buffers

2012-02-20T08:46:27+00:00

added 'TODO' in places where it is missing.

Change-Id: Ia802c94e3bb76930f7c88c990f078525be5459f5
Signed-off-by: Amar Tumballi 
BUG: 765264
Reviewed-on: http://review.gluster.com/388
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

Fix case where we free a definitely-NULL iobuf

2012-02-10T10:59:23+00:00

Change-Id: I7097386b41c8881f875c9cc3e41354df5c904dea
BUG: 789118
Signed-off-by: Jeff Darcy 
Reviewed-on: http://review.gluster.com/2732
Tested-by: Gluster Build System 
Reviewed-by: Harshavardhana 
Reviewed-by: Amar Tumballi

core: change lk-owner as a 1k buffer

2012-01-25T04:14:17+00:00

so, NLM can send the lk-owner field directly to the locks translators,
while doing the same effort, also enabled sending maximum of 500 aux gid
over protocol.

Change-Id: I87c2514392748416f7ffe21d5154faad2e413969
Signed-off-by: Amar Tumballi 
BUG: 767229
Reviewed-on: http://review.gluster.com/779
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

rpc: Need to update conn->last_recieved.

2011-11-18T12:26:01+00:00

This is important for protocol/client's ping_timer to function correctly.

Change-Id: I9f45d701126bb739535d9c5ec280833362bef9ed
BUG: 3816
Reviewed-on: http://review.gluster.com/512
Reviewed-by: Amar Tumballi 
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy

glusterfs: An effort to fix all the spell mistakes and typo

2011-11-17T05:08:56+00:00

in the entire glusterfs codebase.

This patch fixes many of spell mistakes and typo in the entire
glusterfs codebase and all supported modules.

Change-Id: I83238a41aa08118df3cf4d1d605505dd3cda35a1
BUG: 3809
Signed-off-by: Harshavardhana 
Reviewed-on: http://review.gluster.com/731
Tested-by: Gluster Build System 
Reviewed-by: Amar Tumballi 
Reviewed-by: Vijay Bellur

rpc: No timeouts for lock fops.

2011-09-23T13:11:32+00:00

As of today, all fops bail out after 30 mins by default. This is not desirable
with lock fops since it could be 'rightfully blocked' for a really long time.
But the client would assume that the lock fop has 'expired' after 30 mins and
clean up its references to the locks.  Later when the locks xlator decides to
grant it, we are left with an orphan (stale) lock .

This fix exempts lock fops from timeouts. Only on network disruptions both
client and server decide to 'clean up' the locks held.

Change-Id: If1d74ba21113650b976728e9b764c551a0a49e59
BUG: 3617
Reviewed-on: http://review.gluster.com/478
Tested-by: Gluster Build System 
Reviewed-by: Amar Tumballi

rpc:memcpy data of right size to auth params

2011-09-20T05:00:08+00:00

Change-Id: I6999e0a1463ee3475f7607990337326b3f008538
BUG: 3587
Reviewed-on: http://review.gluster.com/464
Tested-by: Gluster Build System 
Reviewed-by: Amar Tumballi