glusterfs.git/xlators/features/changelog/lib, branch v3.6.6

geo-rep/libgfchangelog: Support of symlinks while creation of working dir.

2014-09-08T17:42:39+00:00

In gf_changelog_register, enable symlink support while creating
working directory if its not already created.

BUG: 1138952
Change-Id: I8fec52a5768fae46ce30a2331f30f1d8d5e2e173
Signed-off-by: Kotresh H R 
Reviewed-on: http://review.gluster.org/8409
Reviewed-by: Venky Shankar 
Tested-by: Gluster Build System 
Tested-by: Venky Shankar 
Reviewed-on: http://review.gluster.org/8641
Reviewed-by: Vijay Bellur

geo-rep/libgfchangelog: Create working dir during changelog_register if not present.

2014-09-08T17:42:25+00:00

Earlier, xysnc's register was being called first,
which was creating working directory before calling
changelog_register. Now it is history crawl first.
Hence working directory would not have been created.
Create it in gf_changelog_register itself if it is
not already created.

BUG: 1138952
Change-Id: Ie39b9fd8c1ef7385f76a9b67d0acc3c1c2fd2bb2
Signed-off-by: Kotresh H R 
Reviewed-on: http://review.gluster.org/8399
Tested-by: Gluster Build System 
Reviewed-by: Aravinda VK 
Reviewed-by: Vijay Bellur 
Reviewed-on: http://review.gluster.org/8640

build: make GLUSTERD_WORKDIR rely on localstatedir

2014-09-03T18:01:45+00:00

Backport from master branch - http://review.gluster.org/#/c/8246/

- Break-way from '/var/lib/glusterd' hard-coded previously,
  instead rely on 'configure' value from 'localstatedir'
- Provide 's/lib/db' as default working directory for gluster
  management daemon for BSD and Darwin based installations
- loff_t is really off_t on Darwin
- fix-off the warnings generated by clang on FreeBSD/Darwin
- Now 'tests/*' use GLUSTERD_WORKDIR a common variable for all
  platforms.
- Define proper environment for running tests, define correct PATH
  and LD_LIBRARY_PATH when running tests, so that the desired version
  of glusterfs is used, regardless where it is installed.
  (Thanks to manu@netbsd.org for this additional work)

Change-Id: I06e684ac4c26d1e74c9daf76753403ad15f79276
BUG: 1130308
Signed-off-by: Harshavardhana 
Reviewed-on: http://review.gluster.org/8486
Tested-by: Gluster Build System

changelog: variable 'writen' is changed

2014-07-14T14:02:43+00:00

This patch change the variable name to 'written' in changelog, along
with few other typo fixing.

Change-Id: I1d3cbea5c89fc0a15233bb6e61b4fbd4bfdd3a67
BUG: 1075417
Signed-off-by: Humble Chirammal 
Reviewed-on: http://review.gluster.org/8267
Tested-by: Gluster Build System 
Reviewed-by: Venky Shankar 
Tested-by: Venky Shankar

features/changelog: Fix for history api issue during upgrade

2014-06-23T05:56:10+00:00

On failure during history changelog availability check, there
was an attempt to destory attribute (of consume thread) which
was not initialised.

Change-Id: Ica7a98ee70eb1303303884b01ef76ab71430a351
BUG: 1111169
Signed-off-by: Ajeet Jha 
Reviewed-on: http://review.gluster.org/8118
Reviewed-by: Kotresh HR 
Tested-by: Gluster Build System 
Reviewed-by: Venky Shankar 
Tested-by: Venky Shankar

features/changelog: skipping empty changelogs in history

2014-06-10T13:37:57+00:00

Empty changelgs are unlinked and htime-update is bypassed
while publishing partially written changelog.

Change-Id: I1533ad431e4fbf592d2f38837fce782932d01e9c
BUG: 1105466
Signed-off-by: Ajeet Jha 
Reviewed-on: http://review.gluster.org/7949
Tested-by: Gluster Build System 
Reviewed-by: Venky Shankar 
Tested-by: Venky Shankar

features/changelog: NULL termination after memcpy should be of dest pointer

2014-05-28T06:23:09+00:00

snippet code
<
 ..memcpy (bufff, src, len - 1);
 ..*(src + len) = '\0'; ---> Wrong!
>

Source buffer lvalue() referencing with offset style NULL
termination is wrong and unnecessary when we have a destination
buffer, it is the destination buffer which should look to be NULL
terminated

Makes it more readable and also clearly logical.

<
 ..memcpy (bufff, src, len - 1);
 ..bufff[len -1] = '\0'; ---> Correct!
>

Change-Id: I6d7f312aaa5c541f0345649ff1ef9f193892b674
BUG: 1099986
Signed-off-by: Harshavardhana 
Reviewed-on: http://review.gluster.org/7836
Reviewed-by: Raghavendra Bhat 
Reviewed-by: Venky Shankar 
Tested-by: Venky Shankar

features/changelog : historical journal consumption.

2014-05-14T12:10:15+00:00

Facilitates Glusterfs with the ability to detect file-operations
happened in past by scanning the back-end(brick-level) glusterfs
journal (changelog).

Design:
  * List of changelogs produces in one perfectly running session are
    stored in htime file which also holds necessary information about
    the session start and end time.
  * Involves fixed sized seeks to identify N'th changelog in the list.
  * Requires O(log n), (where n is number of changelogs in the list),
    time to identify the end changelog for the given start-end time
    interval.

Currently the background processing of changelogs is sub optimal. BZ
1097041 tracks the development effort.

For complete design, refer the below link:
http://lists.nongnu.org/archive/html/gluster-devel/2014-02/msg00206.html

Change-Id: I27e49f75e492e843084d0ecaf9130224d08462a0
BUG: 1091961
Signed-off-by: Ajeet Jha 
Signed-off-by: Venky Shankar 
Signed-off-by: Ajeet Jha 
Reviewed-on: http://review.gluster.org/6930
Reviewed-by: Kotresh HR 
Tested-by: Gluster Build System

libgfchangelog: memory accounting intialization

2014-05-08T11:24:07+00:00

Needed as memory accounting turned ON by default now.
Without this, GF_{CALLOC,MALLOC} calls assert.

Change-Id: Ie54a6efb61871e70d4f7c796d9c86a867051e2e0
BUG: 1094708
Signed-off-by: Venky Shankar 
Reviewed-on: http://review.gluster.org/7698
Reviewed-by: Kotresh HR

features/libgfchangelog: APIs to process history changelogs.

2014-04-28T11:53:36+00:00

1. Create directories in following fashion for history API's
   usage when consumer is registered with libgfchangelog
   shared library through gf_changelog_register.
       scratch_dir/.history
       scratch_dir/.history/.current
       scratch_dir/.history/.processed
       scratch_dir/.history/.processing

2. Added new file 'gf-history-changelog.c' and following APIs
   are provided for consumers to process history changelogs.

    1. gf_history_changelog_scan:
            Move processed history changelog file from
            .processing to .processed
    2. gf_history_changelog_next_change:
            Return the next history changelog file entry.
            Zero means all history chanelogs are consumed.
    3. gf_history_changelog_done:
            Scan .processing directory and generate a list of
            change entries.
    4. gf_history_changelog_start_fresh:
            For a set of changelogs, start from the begining.

NOTE: Though this patch provides above funcationalities.
      It is considered functionally full with the
      patch (http://review.gluster.org/#/c/6930/).

Change-Id: I200780c7278e0a6c008910d93faad5858a4b3e76
Original-author: Kotresh H R 
Signed-off-by: Kotresh H R 
Signed-off-by: Ajeet Jha 
Reviewed-on: http://review.gluster.org/6998
Tested-by: Gluster Build System 
Reviewed-by: Venky Shankar 
Tested-by: Venky Shankar