glusterfs.git/xlators/protocol/server/src/server.h, branch v3.6.3

rpc: implement server.manage-gids for group resolving on the bricks

2014-05-09T19:22:39+00:00

The new volume option 'server.manage-gids' can be enabled in
environments where a user belongs to more than the current absolute
maximum of 93 groups. This option triggers the following behavior:

1. The AUTH_GLUSTERFS structure sent by GlusterFS clients (fuse, nfs or
   libgfapi) will contain only one (1) auxiliary group, instead of
   a full list. This reduces network usage and prevents problems in
   encoding the AUTH_GLUSTERFS structure which should fit in 400 bytes.
2. The single group in the RPC Calls received by the server is replaced
   by resolving the groups server-side. Permission checks and similar in
   lower xlators are applied against the full list of groups where the
   user belongs to, and not the single auxiliary group that the client
   sent.

Change-Id: I9e540de13e3022f8b63ff893ecba511129a47b91
BUG: 1053579
Signed-off-by: Niels de Vos 
Reviewed-on: http://review.gluster.org/7501
Tested-by: Gluster Build System 
Reviewed-by: Santosh Pradhan 
Reviewed-by: Harshavardhana 
Reviewed-by: Anand Avati

glusterd/snapshot : Clean up of old barrier code.

2014-04-30T09:13:26+00:00

As a new barrier translator is introduced, we dont require
the old barrier code. Hence cleaning thar up.

Change-Id: Ieedca6f33a746898f0d2332fda1f1d4c86fff98f
BUG: 1061685
Signed-off-by: Sachin Pandit 
Reviewed-on: http://review.gluster.org/7577
Tested-by: Gluster Build System 
Reviewed-by: Kaushal M 
Reviewed-by: Vijaikumar Mallikarjuna 
Reviewed-by: Vijay Bellur

glusterd: Ping timer implmentation

2014-04-29T21:23:51+00:00

This patch refactors the existing client ping timer implementation, and makes
use of the common code for implementing both client ping timer and the
glusterd ping timer.

A new gluster rpc program for ping is introduced. The ping timer is only
started for peers that have this new program. The deafult glusterd ping
timeout is 30 seconds. It is configurable by setting the option
'ping-timeout' in glusterd.vol .

Also, this patch introduces changes in the glusterd-handshake path. The client
programs for a peer are now set in the callback of dump_versions, for both
the older handshake and the newer op-version handshake. This is the only place
in the handshake process where we know what programs a peer supports.

Change-Id: I035815ac13449ca47080ecc3253c0a9afbe9016a
BUG: 1038261
Signed-off-by: Vijaikumar M 
Signed-off-by: Krishnan Parthasarathi 
Reviewed-on: http://review.gluster.org/5202
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

gluster: GlusterFS Volume Snapshot Feature

2014-04-11T23:29:17+00:00

This is the initial patch for the Snapshot feature. Current patch
includes following features:
* Snapshot create
* Snapshot delete
* Snapshot restore
* Snapshot list
* Snapshot info
* Snapshot status
* Snapshot config

Change-Id: I2f46920c0d61c515f6a60e0f8b46fff886d9f6a9
BUG: 1061685
Signed-off-by: shishir gowda 
Signed-off-by: Sachin Pandit 
Signed-off-by: Vijaikumar M 
Signed-off-by: Raghavendra Bhat 
Signed-off-by: Rajesh Joseph 
Signed-off-by: Joseph Fernandes 
Signed-off-by: Avra Sengupta 
Reviewed-on: http://review.gluster.org/7128
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

client_t: phase 2, refactor server_ctx and locks_ctx out

2013-10-31T16:32:50+00:00

remove server_ctx and locks_ctx from client_ctx directly and store as
into discrete entities in the scratch_ctx

hooking up dump will be in phase 3

BUG: 849630
Change-Id: I94cea328326db236cdfdf306cb381e4d58f58d4c
Signed-off-by: Kaleb S. KEITHLEY 
Reviewed-on: http://review.gluster.org/5678
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

libglusterfs: Add monotonic clocking counter for timer thread

2013-10-15T07:14:57+00:00

gettimeofday() returns the current wall clock time and timezone.
Using these functions in order to measure the passage of time
(how long an operation took) therefore seems like a no-brainer.

This time suffer's from some limitations:

a. They have a low resolution: “High-performance” timing by
definition, requires clock resolutions into the microseconds
or better.

b. They can jump forwards and backwards in time: Computer
clocks all tick at slightly different rates, which causes
the time to drift. Most systems have NTP enabled which
periodically adjusts the system clock to keep them in sync
with “actual” time. The adjustment can cause the clock to
suddenly jump forward (artificially inflating your timing
numbers) or jump backwards (causing your timing calculations
to go negative or hugely positive). In such cases timer
thread could go into an infinite loop.

From 'man gettimeofday':
----------
..
..
The time returned by gettimeofday() is affected by discontinuous
jumps in the system time (e.g., if the system administrator manually
changes the system time).  If you need a monotonically increasing
clock, see clock_gettime(2).
..
..
----------

Rationale:

For calculating interval timing for Timer thread, all that’s
needed should be clock as a simple counter that increments
at a stable rate.

This is necessary to avoid the jumps which are caused by using
"wall time", this counter must be monotonic that can never
“tick” backwards, ever.

Change-Id: I701d31e71a85a73d21a6c5cd15583e7a5a645eeb
BUG: 1017993
Signed-off-by: Harshavardhana 
Reviewed-on: http://review.gluster.org/6070
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

libglusterfs/client_t client_t implementation, phase 1

2013-07-30T05:22:21+00:00

Implementation of client_t

The feature page for client_t is at
http://www.gluster.org/community/documentation/index.php/Planning34/client_t

In addition to adding libglusterfs/client_t.[ch] it also extracts/moves
the locktable functionality from xlators/protocol/server to libglusterfs,
where it is used; thus it may now be shared by other xlators too.

This patch is large as it is. Hooking up the state dump is left to do
in phase 2 of this patch set.

(N.B. this change/patch-set supercedes previous change 3689, which was
corrupted during a rebase. That change will be abandoned.)

BUG: 849630
Change-Id: I1433743190630a6d8119a72b81439c0c4c990340
Signed-off-by: Kaleb S. KEITHLEY 
Reviewed-on: http://review.gluster.org/3957
Tested-by: Gluster Build System 
Reviewed-by: Amar Tumballi

protocol/server: Change logs to give more info on disconnects

2013-05-31T12:27:36+00:00

Change-Id: I8304a12df417be164c564e0696f72c3334f21569
BUG: 952138
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/4824
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

license: xlators/protocol/server dual license GPLv2 and LGPLv3+

2013-04-12T17:06:05+00:00

BUG: 951549
Change-Id: I3de5bd86d4238a60a0a85ba2e15d9c131969b210
Signed-off-by: Kaleb S. KEITHLEY 
Reviewed-on: http://review.gluster.org/4816
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

protocol/server: dump the ltable and fd table related inodes only

2012-09-18T04:15:07+00:00

Do not dump the entire inode table in the statedump. Instead dump
those inodes only which are present in fdtable or ltable.

Change-Id: If848f9a6198927b4cc0abd47339461f3ea41d6df
BUG: 844688
Signed-off-by: Raghavendra Bhat 
Reviewed-on: http://review.gluster.org/3848
Tested-by: Gluster Build System 
Reviewed-by: Amar Tumballi 
Reviewed-by: Anand Avati