glusterfs.git/xlators/mgmt/glusterd/src/Makefile.am, branch v3.7.0beta2

Fix case mistake for MKDIR_P in Makefiles

2015-04-23T05:31:42+00:00

Some makefiles used $(mkdir_p) instead of the corectly defined $(MKDIR_P).
The former is substituted as an empty string, leading to possible failures
depending of the user shell tolerance. NetBSD's /bin/sh seems to choke
more easily than Linux's /bin/bash, but if the later does not fail, it
does not created the intended directories anyway.

Resubmit after rebase in hope that regression test will have less
spurious failures.

Backport of: I8caed4000f3c91cb3a685453848fb854793945ed

BUG: 1212676
Change-Id: I393ffda8aa24bffce86f7b1f19b999ffa30c3562
Signed-off-by: Emmanuel Dreyfus 
Reviewed-on: http://review.gluster.org/10279
Tested-by: NetBSD Build System
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

build: make contrib/uuid dependency optional

2015-04-10T11:39:52+00:00

On Linux systems we should use the libuuid from the distribution and not
bundle and statically link the contrib/uuid/ bits.

libglusterfs/src/compat-uuid.h has been introduced and should become an
abstraction layer for different UUID APIs. Non-Linux operating systems
should implement their compatibility layer there.

Once all operating systems have an implementation in compat-uuid.h, we
can remove contrib/uuid/ from the repository completely.

Change-Id: I345e5357644be2521685e00358bb8c83c4ea0577
BUG: 1206587
Signed-off-by: Niels de Vos 
Reviewed-on: http://review.gluster.org/10129
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

glusterd: group server-quorum related code together

2015-04-01T13:07:14+00:00

Server-quorum implementation was spread in many files.  This patch
brings them all together into a single file, namely
glusterd-server-quorum.c. All exported functions are available via
glusterd-server-quorum.h

Change-Id: I8fd77114b5bc6b05127cb8a6a641e0295f0be7bb
BUG: 1205592
Signed-off-by: Krishnan Parthasarathi 
Reviewed-on: http://review.gluster.org/9492
Reviewed-by: Atin Mukherjee 
Tested-by: Gluster Build System 
Reviewed-by: Kaushal M

cli/glusterd: CLI interface for BitRot detection

2015-03-24T17:26:15+00:00

* BitRot enable/disable CLI per volume
* Volfile generation for Scrubber
* Relevant glusterd infrastructure

Change-Id: I1212af63f93ecc52b22ee6da920e1664f66a1e39
BUG: 1170075
Original-Author: Raghavendra Bhat 
Original-Author: Venky Shankar 
Original-Author: Gaurav Kumar Garg 
Original-Author: Anand Nekkunti 
Reviewed-on: http://review.gluster.org/9986
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

mgmt/glusterd: generate volfile for BitD

2015-03-24T14:56:32+00:00

* Implement the skeleton of bit-rot xlator.

Original-Author: Raghavendra Bhat 
Signed-off-by: Venky Shankar 
Signed-off-by: Gaurav Kumar Garg 
Signed-off-by: Anand Nekkunti 
Change-Id: If33218bdc694f5f09cb7b8097c4fdb74d7a23b2d
BUG: 1170075
Reviewed-on: http://review.gluster.org/9710
Reviewed-by: Vijay Bellur 
Tested-by: Vijay Bellur

cli/glusterd: cli command implementation for bitrot features

2015-03-19T01:34:07+00:00

CLI command for bitrot features.

volume bitrot  enable|disable

Above command will enable/disable bitrot feature for particular volume.

BUG: 1170075
Change-Id: Ie84002ef7f479a285688fdae99c7afa3e91b8b99
Signed-off-by: Gaurav Kumar Garg     
Signed-off-by: Anand nekkunti        
Signed-off-by: Dominic P Geevarghese 
Reviewed-on: http://review.gluster.org/9866
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

NFS-Ganesha: Volume set option for managing NFS-Ganesha exports.

2015-03-18T08:53:22+00:00

A dummy translator has been introduced as a place
holder for functions related to managing NFS-Ganesha
exports. A volume set option is introduced to
manage volume level exports.

gluster vol set  ganesha.enable ON/OFF

1. gluster volume set  ganesha.enable ON

It creates the export config file with a unique export ID.
Sends a DBus signal to export this volume dynamically.

2. gluster vol set  ganesha.enable OFF

Unexports the specific volume. Deletes the specfic
config file related to the volume.

This change also removes the handling of the older
keys "nfs-ganesha.enable" and "nfs-ganesha.host"

Change-Id: I8d4a0b542326a6a0c8e4711600b106274d666587
BUG: 1188184
Signed-off-by: Meghana Madhusudhan 
Reviewed-on: http://review.gluster.org/9585
Tested-by: Gluster Build System 
Reviewed-by: Niels de Vos

glusterd: Protect the peer list and peerinfos with RCU.

2015-03-16T09:19:14+00:00

The peer list and the peerinfo objects are now protected using RCU.
Design patterns described in the Paul McKenney's RCU dissertation [1]
(sections 5 and 6) have been used to convert existing non-RCU protected
code to RCU protected code.

Currently, we are only targetting guaranteeing the existence of the
peerinfo objects, ie., we are only looking to protect deletes, not all
updaters. We chose this, as protecting all updates is a much more
complex task.

The steps used to accomplish this are,

1. Remove all long lived direct references to peerinfo objects (apart
from the peerinfo list). This includes references in glusterd_peerctx_t
(RPC), glusterd_friend_sm_event_t (friend state machine) and others.
This way no one has a reference to deleted peerinfo object.

2. Replace the direct references with indirect references, ie., use
peer uuid and peer hostname as indirect references to the peerinfo
object. Any reader or updater now uses the indirect references to get to
the actual peerinfo object, using glusterd_peerinfo_find. Cases where a
peerinfo cannot be found are handled gracefully.

3. The readers get and use the peerinfo object only within a RCU read
critical section. This prevents the object from being deleted/freed when
in actual use.

4. The deletion of a peerinfo object is done in a ordered manner
(glusterd_peerinfo_destroy). The object is first removed from the
peerinfo list using an atomic list remove, but the list head is not
reset to allow existing list readers to complete correctly. We wait for
readers to complete, before resetting the list head. This removes the
object from the list completely. After this no new readers can get a
reference to the object, and it can be freed.

This change was developed on the git branch at [2]. This commit is a
combination of the following commits on the development branch.
  d7999b9 Protect the glusterd_conf_t->peers_list with RCU.
  0da85c4 Synchronize before INITing peerinfo list head after removing
          from list.
  32ec28a Add missing rcu_read_unlock
  8fed0b8 Correctly exit read critical section once peer is found.
  63db857 Free peerctx only on rpc destruction
  56eff26 Cleanup style issues
  e5f38b0 Indirection for events and friend_sm
  3c84ac4 In __glusterd_probe_cbk goto unlock only if peer already
          exists
  141d855 Address review comments on 9695/1
  aaeefed Protection during peer updates
  6eda33d Revert "Synchronize before INITing peerinfo list head after
          removing from list."
  f69db96 Remove unneeded line
  b43d2ec Address review comments on 9695/4
  7781921 Address review comments on 9695/5
  eb6467b Add some missing semi-colons
  328a47f Remove synchronize_rcu from
          glusterd_friend_sm_transition_state
  186e429 Run part of glusterd_friend_remove in critical section
  55c0a2e Fix gluster (peer status/ pool list) with no peers
  93f8dcf Use call_rcu to free peerinfo
  c36178c Introduce composite struct, gd_rcu_head

[1]: http://www.rdrop.com/~paulmck/RCU/RCUdissertation.2004.07.14e1.pdf
[2]: https://github.com/kshlm/glusterfs/tree/urcu

Change-Id: Ic1480e59c86d41d25a6a3d159aa3e11fbb3cbc7b
BUG: 1191030
Signed-off-by: Kaushal M 
Reviewed-on: http://review.gluster.org/9695
Tested-by: Gluster Build System 
Reviewed-by: Atin Mukherjee 
Reviewed-by: Anand Nekkunti 
Reviewed-by: Krishnan Parthasarathi 
Tested-by: Krishnan Parthasarathi

build, glusterd: Add liburcu to build system

2015-02-23T12:35:37+00:00

This patch adds liburcu related checks to the build system and updates
the spec file to require 'userspace-rcu'.

liburcu >= 0.7 is required to build GlusterFS, but 0.8 and above is
preferred. For cases when liburcu 0.7.x is the available version, some
function definitions (currently just one) from liburcu-0.8.6 have been
made available in /contrib/userspace-rcu/.

This change was developed on the git branch at [1]. This commit is a
combination of the following commits on the development branch.
  a5cd6bd Add userspace-rcu checks to configure.ac
  fe5ced3 Add URCU libs to glusterd libtool flags
  1e43302 Add local definition of cds_list_add_tail_rcu for
          liburcu-0.7
  98da755 Move local definition of cds_list_add_tail_rcu into contrib
  8c44dfd Update spec file to include userspace-rcu0466e33 Rename
  rculist-additional.h to rculist-extra.h
  947c7b3 Add rculist-extra.h to dist
  19f32ad Address review comments 9605/1

[1]: https://github.com/kshlm/glusterfs/tree/urcu

Change-Id: Ifbb617d0dacce8fa01214f894badb9d8cdcaf56f
BUG: 1191030
Signed-off-by: Kaushal M 
Reviewed-on: http://review.gluster.org/9605
Tested-by: Gluster Build System 
Reviewed-by: Atin Mukherjee 
Reviewed-by: Niels de Vos 
Reviewed-by: Krishnan Parthasarathi 
Tested-by: Krishnan Parthasarathi

glusterd: nfs,shd,quotad,snapd daemons refactoring

2015-02-20T12:04:08+00:00

This patch ports nfs, shd, quotad & snapd with the approach suggested in
http://www.gluster.org/pipermail/gluster-devel/2014-December/043180.html

Change-Id: I4ea5b38793f87fc85cc9d2cf873727351dedffd2
BUG: 1191486
Signed-off-by: Atin Mukherjee 
Signed-off-by:  Krishnan Parthasarathi 
Reviewed-on: http://review.gluster.org/9428
Tested-by: Gluster Build System 
Reviewed-by: Anand Nekkunti