glusterfs.git/xlators/cluster/dht/src/dht-messages.h, branch v3.7.0alpha0

cluster/dht: Add tier translator.

2015-03-21T16:50:29+00:00

The tier translator shares most of DHT's code. It differs in how
subvolumes are chosen for I/Os, and how file migration (cache promotion
and demotion) is managed. That different functionality is split to either
DHT or tier logic according to the "tier_methods" structure.

A cache promotion and demotion thread is created in a manner
similar to the rebalance daemon. The thread operates a timing
wheel which periodically checks for promotion and demotion candidates
(files). Candidates are queued and then migrated. Candidates must exist on
the same node as the daemon and meet other critera per caching policies.

This patch has two authors (Dan Lambright and Joseph Fernandes). Dan
did the DHT changes and Joe wrote the cache policies. The fix depends on
DHT readidr changes and the database library which have been submitted
separately.  Header files in libglusterfs/src/gfdb should be reviewed in
patch 9683.

For more background and design see the feature page [1].

[1]
http://www.gluster.org/community/documentation/index.php/Features/data-classification

Change-Id: Icc26c517ccecf5c42aef039f5b9c6f7afe83e46c
BUG: 1194753
Signed-off-by: Dan Lambright 
Reviewed-on: http://review.gluster.org/9724
Reviewed-by: Vijay Bellur 
Tested-by: Vijay Bellur

dht: suggest to add more bricks when min-free-disk is exceeded.

2015-03-18T11:33:01+00:00

Change-Id: I628fbd99c2478fcb8bb6e5be55e43467f25227bf
BUG: 1165870
Signed-off-by: Humble Devassy Chirammal 
Reviewed-on: http://review.gluster.org/9879
Tested-by: Gluster Build System 
Reviewed-by: Lalatendu Mohanty 
Reviewed-by: Kaleb KEITHLEY

cluster/dht: Added logging of new layout for dir-selfheal

2014-07-03T16:22:37+00:00

Added a log which logs the new layout which will be used
for the directory self healing

It prints:

a) Subvolume name
b) Error --> Is needed because layout healing depends on
             the error and having it in log will help in
             debugging
c) Start     Starting of the layout range
d) Stop      Ending of the layout range

Change-Id: I48c9c697716a899165ed29b737362a75c62e09b3
BUG: 1113066
Signed-off-by: Venkatesh Somyajulu 
Reviewed-on: http://review.gluster.org/8173
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

Cluster/DHT: New logging framework

2014-06-16T13:25:51+00:00

Moved all relevant DHT gf_log calls to the new logging
framework.

Change-Id: I3af3cfe0416e332774a6c4ff6a091d006c400af2
BUG: 1075611
Signed-off-by: Nithya Balachandran 
Reviewed-on: http://review.gluster.org/7929
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur