glusterfs.git/libglusterfs/src/glfs-message-id.h, branch v7.3

libglusterfs: Move devel headers under glusterfs directory

2018-12-05T21:47:04+00:00

libglusterfs devel package headers are referenced in code using
include semantics for a program, this while it works can be better
especially when dealing with out of tree xlator builds or in
general out of tree devel package usage.

Towards this, the following changes are done,
- moved all devel headers under a glusterfs directory
- Included these headers using system header notation <> in all
code outside of libglusterfs
- Included these headers using own program notation "" within
libglusterfs

This change although big, is just moving around the headers and
making it correct when including these headers from other sources.

This helps us correctly include libglusterfs includes without
namespace conflicts.

Change-Id: Id2a98854e671a7ee5d73be44da5ba1a74252423b
Updates: bz#1193929
Signed-off-by: ShyamsundarR

features/snapview-server: change gf_log instances to gf_msg

2018-11-05T07:05:23+00:00

Change-Id: Ib8bdf210a896423abcd7413dd4896d424ac0f561
fixes: bz#1626610
Signed-off-by: Raghavendra Bhat

features/snapview-client: replace gf_log with gf_msg

2018-10-10T05:46:29+00:00

Change-Id: I87f01d86f50eb2fca21febb0ea3e77fbd152eb93
updates: bz#1626610
Signed-off-by: Raghavendra Bhat

ctime: Provide noatime option

2018-09-25T17:20:47+00:00

Most of the applications are {c|m}time dependant
and very few are atime dependant. So provide noatime
option to not update atime when ctime feature is
enabled.

Also this option has to be enabled with ctime
feature to avoid unnecessary self heal. Since
AFR/EC reads data from single subvolume, atime
is only updated in one subvolume triggering self
heal.

updates: bz#1593538
Change-Id: I085fb33c882296545345f5df194cde7b6cbc337e
Signed-off-by: Kotresh HR

Land clang-format changes

2018-09-12T11:52:48+00:00

Change-Id: I6f5d8140a06f3c1b2d196849299f8d483028d33b

xlators/playground: fix the template files with latest requirements

2018-08-22T15:47:38+00:00

* Make use of xlator_api
* Make use of gf_msg()
* Make use of mem-pool
* Add a sample metrics dump function
* Provide an dummy option, which can be initialized, and reconfigured
* Add a test case to make sure template xlator is built and used
  with default fops
* Make a change in rpc-coverage to run without lock tests.

Updates: bz#1193929
Change-Id: I377dd67b656f440f9bc7c0098e21c0c1934e9096
Signed-off-by: Amar Tumballi

feature/thin-arbiter: Implement thin-arbiter translator

2018-04-25T09:04:39+00:00

Updates #352

Change-Id: I3d8caa6479dc8e48bec62a09b056971bb061f0cf
Signed-off-by: Ashish Pandey

quiesce, gfproxy: Implement failover across multiple gfproxy nodes

2018-01-30T05:00:52+00:00

Updates: #242
Change-Id: I767e574a26e922760a7130bd209c178d74e8cf69
Signed-off-by: Poornima G

dentry fop serializer: added new server side xlator for dentry fop serialization

2018-01-24T05:39:44+00:00

Problems addressed by this xlator :

[1]. To prevent race between parallel mkdir,mkdir and lookup etc.

Fops like mkdir/create, lookup, rename, unlink, link that happen on a
particular dentry must be serialized to ensure atomicity.

Another possible case can be a fresh lookup to find existance of a path
whose gfid is not set yet. Further, storage/posix employs a ctime based
heuristic 'is_fresh_file' (interval time is less than 1 second of current
time) to check fresh-ness of file. With serialization of these two fops
(lookup & mkdir), we eliminate the race altogether.

[2]. Staleness of dentries

This causes exponential increase in traversal time for any inode in the
subtree of the directory pointed by stale dentry.

Cause :  Stale dentry is created because of following two operations:

      a. dentry creation due to inode_link, done during operations like
         lookup, mkdir, create, mknod, symlink, create and
      b. dentry unlinking due to various operations like rmdir, rename,
         unlink.

       The reason is __inode_link uses __is_dentry_cyclic, which explores
       all possible path to avoid cyclic link formation during inode
       linkage. __is_dentry_cyclic explores stale-dentry(ies) and its
       all ancestors which is increases traversing time exponentially.

Implementation : To acheive this all fops on dentry must take entry locks
before they proceed, once they have acquired locks, they perform the fop
and then release the lock.

Some documentation from email conversation:
[1] http://www.gluster.org/pipermail/gluster-devel/2015-December/047314.html

[2] http://www.gluster.org/pipermail/gluster-devel/2015-August/046428.html

With this patch, the feature is optional, enable it by running:

 `gluster volume set $volname features.sdfs enable`

Also the feature is tested for a month without issues in the
experiemental branch for all the regression.

Change-Id: I6e80ba3cabfa6facd5dda63bd482b9bf18b6b79b
Fixes: #397
BUG: 1304962
Signed-off-by: Sakshi Bansal 
Signed-off-by: Amar Tumballi 
Signed-off-by: Sunny Kumar

all: Simplify component message id's definition

2017-12-14T02:33:51+00:00

This patch creates a new way of defining message id's that is easier
and less error prone because it doesn't require so many manual changes
each time a new component is defined or a new message created.

Change-Id: I71ba8af9ac068f5add7e74f316a2478bc991c67b
Signed-off-by: Xavier Hernandez