glusterfs.git/libglusterfs/src/cluster-syncop.c, branch v3.10.7

cluster/ec: Don't trigger data/metadata heal on Lookups

2017-02-27T15:34:08+00:00

Problem-1
If Lookup which doesn't take any locks observes version mismatch it can't be
trusted. If we launch a heal based on this information it will lead to
self-heals which will affect I/O performance in the cases where Lookup is
wrong. Considering self-heal-daemon and operations on the inode from client
which take locks can still trigger heal we can choose to not attempt a heal on
Lookup.

Problem-2:
Fixed spurious failure of
tests/bitrot/bug-1373520.t
For the issues above, what was happening was that ec_heal_inspect()
is preventing 'name' heal to happen

Problem-3:
tests/basic/ec/ec-background-heals.t
To be honest I don't know what the problem was, while fixing
the 2 problems above, I made some changes to ec_heal_inspect() and
ec_need_heal() after which when I tried to recreate the spurious
failure it just didn't happen even after a long time.

 >BUG: 1414287
 >Signed-off-by: Pranith Kumar K 
 >Change-Id: Ife2535e1d0b267712973673f6d474e288f3c6834
 >Reviewed-on: https://review.gluster.org/16468
 >Smoke: Gluster Build System 
 >NetBSD-regression: NetBSD Build System 
 >Reviewed-by: Xavier Hernandez 
 >CentOS-regression: Gluster Build System 
 >Reviewed-by: Ashish Pandey 

BUG: 1419824
Change-Id: I340b48cd416b07890bf3a5427562f5e3f88a481f
Signed-off-by: Pranith Kumar K 
Reviewed-on: https://review.gluster.org/16765
NetBSD-regression: NetBSD Build System 
CentOS-regression: Gluster Build System 
Reviewed-by: Xavier Hernandez 
Smoke: Gluster Build System

libglusterfs: Fix cluster_entrylk retry

2015-05-05T04:48:13+00:00

Change-Id: I92ff46bae36d39a449d4bbaedc88a322992f65eb
BUG: 1215265
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/10391
Tested-by: Gluster Build System 
Reviewed-by: Krutika Dhananjay

libglusterfs: Implement cluster-syncop

2015-04-25T11:56:55+00:00

This patch implements syncop equivalent for cluster of xlators. The xlators on
which the fop needs to be performed is taken in input arguments to the
functions and the responses are gathered and provided as the output.

This idea is taken from afr-v2 self-heal implementation by Avati.

Change-Id: I2b568f4340cf921a65054b8ab0df7edc4478b5ca
BUG: 1213358
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/10240
Reviewed-by: Krutika Dhananjay 
Tested-by: NetBSD Build System
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur