glusterfs.git/xlators/cluster/afr/src/afr.h, branch v3.1.4qa2

cluster/afr: Perform self-heal as root

2011-02-09T07:20:59+00:00

Signed-off-by: Pranith Kumar K 
Signed-off-by: Anand V. Avati 

BUG: 2370 (cluster/afr: Perform self-heal as root)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2370

adding libxlator, to ensure proper client side aggregation of marks by clustering translators

2011-01-27T11:16:51+00:00

Signed-off-by: Kaushik BV 
Signed-off-by: Csaba Henk 
Signed-off-by: Anand V. Avati 

BUG: 2310 (georeplication)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2310

replicate: optimistic changelog

2010-11-09T11:07:07+00:00

The standard way of maintaining changelog in replicate has been to
write out pending flags and to unset the pending flag post the
actual operation.

This new optimization kicks in only when all subvolumes are up.

The optimization is that, during pre-op, no changelog is written for
METADATA and ENTRY/RENAME operations. If during the operation nothing
failed, no changelog is updated in post-op either. If however,
something does fail during an operation, then, pending flags get
written during post op pointing only towards the failed nodes.

DATA transactions continue to work the way they are.

If one subvolume is down, pending flags are written in pre-op changelog
itself as before.

The impact of this optimization is only in the case when both servers
die or the client dies while the 'FOP' stage of the transaction is
in progress. By nature of METADATA and ENTRY operations, detecting a
mismatch later is not dependent on the presence of changelog. Changelog
only determines the direction in which self-heal happens for these types
of transactions. For the direction too this optimization does not have
a major impact because in the cases of failure (both servers dieing or
client dieing) the final state (direction of self-heal) would be
arbitrary anyways as the syscall wouldn't have completed.

Signed-off-by: Anand V. Avati 
Signed-off-by: Anand V. Avati 

BUG: 2068 (performance enhancements)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2068

Copyright changes

2010-10-11T14:31:12+00:00

Signed-off-by: Vijay Bellur 
Signed-off-by: Vijay Bellur 

BUG: 971 (dynamic volume management)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=971

Change GNU GPL to GNU AGPL

2010-10-04T14:50:05+00:00

Signed-off-by: Pranith Kumar K 
Signed-off-by: Vijay Bellur 

BUG: 1388 ()
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1388

rmdir: introduce extra flags parameter in FOP prototype

2010-10-03T05:18:56+00:00

Signed-off-by: Anand V. Avati 
Signed-off-by: Vijay Bellur 

BUG: 971 (dynamic volume management)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=971

Changes to replace flock with gf_flock across GlusterFS.

2010-10-01T12:05:53+00:00

Signed-off-by: Pavan Vilas Sondur 
Signed-off-by: Vijay Bellur 

BUG: 865 (Add locks recovery support in GlusterFS)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=865

cluster/afr: Recover locks on child_up from source to sink.

2010-10-01T08:02:52+00:00

Signed-off-by: Pavan Vilas Sondur 
Signed-off-by: Vijay Bellur 

BUG: 865 (Add locks recovery support in GlusterFS)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=865

protocol/client: cluster/afr: Support lock recovery and self heal.

2010-09-30T18:19:24+00:00

Signed-off-by: Pavan Vilas Sondur 
Signed-off-by: Vijay Bellur 

BUG: 865 (Add locks recovery support in GlusterFS)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=865

replicate: remove checks which prevented self-heal when open fds were present

2010-09-29T13:34:42+00:00

this check is not needed anymore since the introduction of changelog piggybacking
as the optimization technique instead of first-write-to-flush technique

some of the self-healing issues with NFS mounts should be resolved

Signed-off-by: Anand V. Avati 
Signed-off-by: Vijay Bellur 

BUG: 1235 (Bug for all pump/migrate commits)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1235