glusterfs.git/xlators/cluster/afr/src/afr-inode-write.c, branch v3.7.2

cluster/afr : Prevent inode-evict during split-brain resolution

2015-05-09T08:54:56+00:00

        Backport of: http://review.gluster.org/#/c/10134/

1) Provided setfattr command to set timeout for split-brain
choice.

2) If split-brain inspection/resolution is being done
from the mount for a file, ref the inode when
split-brain-choice is set.
This inode will be unconditionally unref-ed after timeout
seconds set by the user/default otherwise.

3) Updated the doc and testcase to reflect the changes.

Change-Id: I15c9037dee28855f21e680e7e3632e1f48dba4e1
BUG: 1219388
Reviewed-on: http://review.gluster.org/10134
Reviewed-by: Krutika Dhananjay 
Reviewed-by: Ravishankar N 
Tested-by: Gluster Build System 
Reviewed-by: Pranith Kumar Karampuri 
Signed-off-by: Anuradha 
Reviewed-on: http://review.gluster.org/10679

afr: add arbitration support

2015-05-05T09:30:41+00:00

Backport of http://review.gluster.org/#/c/10258/

Add logic in afr to work in conjunction with the arbiter xlator when a
replica 3 arbiter volume is created. More specifically, this patch:

* Enables full locks for afr data transaction for such volumes.
* Removes the upfront marking of pending xattrs at the time of pre-op
  and defer it to post-op. (This is an arbiter independent change and is made for all afr transactions.)
* After pre-op stage, check if we can proceed with the fop stage without
  ending up in split-brain by examining the changelog xattrs.
* Unwinds the fop with failure if only one source was available at the
   time of pre-op and the fop happened to fail on particular source brick.
* Skips data self-heal if arbiter brick is the only source available.
* Adds the arbiter-count option to the shd graph.

This patch is a part of the arbiter logic implementation for 3 way AFR
details of which can be found at http://review.gluster.org/#/c/9656/

Change-Id: I9603db9d04de5626eb2f4d8d959ef5b46113561d
BUG: 1217689
Signed-off-by: Ravishankar N 
Reviewed-on: http://review.gluster.org/10514
Tested-by: Gluster Build System 
Reviewed-by: Pranith Kumar Karampuri

Xlators : Fixed typos

2015-04-02T10:21:08+00:00

Change-Id: I948f85cb369206ee8ce8b8cd5e48cae9adb971c9
BUG: 1075417
Signed-off-by: Manikandan Selvaganesh 
Reviewed-on: http://review.gluster.org/9529
Reviewed-by: Niels de Vos 
Tested-by: Gluster Build System 
Reviewed-by: Kaleb KEITHLEY 
Reviewed-by: Humble Devassy Chirammal

cluster/afr : enable inspection & resolution of files in split-brain

2015-03-19T13:33:12+00:00

Part 2/2 patch to enable users analyze and resolve
split-brain.

This patch enables :
1) Users to inspect the files in data and metadata split-brain.
2) Resolve the split-brain.
Both using a series of setfattr commands.

Consider a volume "test" with 2 bricks.

1) To inspect a file f1:
setfattr -n replica.split-brain-choice -v test-client-0 f1
        After the execution of this command, if no read_subvol
is found, reads will be served from test-client-0 (corresponding
to brick-0).

2) To resolve split-brain :
setfattr -n replica.split-brain-heal-finalize -v test-client-0 f1
        Execution of this command will lead to the resolution
of data and metadata split-brain with subvol mentioned in the
command (test-client-0 here) as the source and the rest as sink.

Change-Id: Ia20f3ee5abd3119e3d54fcc599f1e55ac65fd179
BUG: 1191396
Signed-off-by: Anuradha 
Reviewed-on: http://review.gluster.org/9743
Reviewed-by: Pranith Kumar Karampuri 
Tested-by: Gluster Build System

afr: coverity fixes

2014-12-23T15:22:38+00:00

Some fixes for the 17th Dec 2014 run.
https://scan6.coverity.com:8443/reports.htm#v31028/p10714/g31029

Change-Id: Ia4410ef87a56fffb61803d0a4e62369b058e1cfb
BUG: 1176089
Signed-off-by: Ravishankar N 
Reviewed-on: http://review.gluster.org/9314
Tested-by: Gluster Build System 
Reviewed-by: Pranith Kumar Karampuri 
Tested-by: Pranith Kumar Karampuri

cluster/afr: Fix bugs in quorum implementation

2014-05-15T00:29:21+00:00

- Have common place to perform quorum fop wind check
- Check if fop succeeded in a way that matches quorum
  to avoid marking changelog in split-brain.

BUG: 1066996
Change-Id: Ibc5b80e01dc206b2abbea2d29e26f3c60ff4f204
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/7600
Tested-by: Gluster Build System 
Reviewed-by: Ravishankar N

build: MacOSX Porting fixes

2014-04-24T21:41:48+00:00

git@forge.gluster.org:~schafdog/glusterfs-core/osx-glusterfs

Working functionality on MacOSX

 - GlusterD (management daemon)
 - GlusterCLI (management cli)
 - GlusterFS FUSE (using OSXFUSE)
 - GlusterNFS (without NLM - issues with rpc.statd)

Change-Id: I20193d3f8904388e47344e523b3787dbeab044ac
BUG: 1089172
Signed-off-by: Harshavardhana 
Signed-off-by: Dennis Schafroth 
Tested-by: Harshavardhana 
Tested-by: Dennis Schafroth 
Reviewed-on: http://review.gluster.org/7503
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

cluster/afr: Init local on txn-frame for zerofill

2014-04-08T18:20:49+00:00

Change-Id: I516f4fb0237dd0b3e512117bf987cea69f8678b8
BUG: 1084485
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/7407
Tested-by: Gluster Build System 
Reviewed-by: Brian Foster 
Reviewed-by: Anand Avati

afr: Simple 1-liner fix for crash in Rackspace

2014-04-04T16:48:44+00:00

BUG: 1084485
Change-Id: I89ddf10add041638ef70baebbce0ec2807ef4b6d
Signed-off-by: Justin Clift 
Reviewed-on: http://review.gluster.org/7402
Reviewed-by: Anand Avati

cluster/afr: refactor

2014-03-22T12:25:57+00:00

- Remove client side self-healing completely (opendir, openfd, lookup)
- Re-work readdir-failover to work reliably in case of NFS
- Remove unused/dead lock recovery code
- Consistently use xdata in both calls and callbacks in all FOPs
- Per-inode event generation, used to force inode ctx refresh
- Implement dirty flag support (in place of pending counts)
- Eliminate inode ctx structure, use read subvol bits + event_generation
- Implement inode ctx refreshing based on event generation
- Provide backward compatibility in transactions
- remove unused variables and functions
- make code more consistent in style and pattern
- regularize and clean up inode-write transaction code
- regularize and clean up dir-write transaction code
- regularize and clean up common FOPs
- reorganize transaction framework code
- skip setting xattrs in pending dict if nothing is pending
- re-write self-healing code using syncops
- re-write simpler self-heal-daemon

Change-Id: I1e4080c9796c8a2815c2dab4be3073f389d614a8
BUG: 1021686
Signed-off-by: Anand Avati 
Reviewed-on: http://review.gluster.org/6010
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur