glusterfs.git/xlators/cluster/ec/src/ec.c, branch v3.6.6

cluster/ec: Wait for all bricks to notify before notifying parent

2015-03-30T07:20:56+00:00

        Backport of http://review.gluster.org/9523

This is to prevent spurious heals that can result in self-heal.

BUG: 1188471
Change-Id: Iaea335d59431d8d85a236963a365f5c791fc7c49
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/9552
Reviewed-by: Xavier Hernandez 
Tested-by: Gluster Build System 
Reviewed-by: Raghavendra Bhat

cluster/ec: Handle CHILD UP/DOWN in all cases

2015-03-30T07:20:38+00:00

        Backport of http://review.gluster.org/9396

Problem:
When all the bricks are down at the time of mounting the volume, then mount
command hangs.

Fix:
1. Ignore all CHILD_CONNECTING events comming from subvolumes.
2. On timer expiration (without enough up or down childs) send
   CHILD_DOWN.
3. Once enough up or down subvolumes are detected, send the appropriate event.
   When rest of the subvols go up/down without changing the overall
   ec-up/ec-down send CHILD_MODIFIED to parent subvols.

BUG: 1188471
Change-Id: If92bd84107d49495cd104deb34601afe7f9b155c
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/9551
Reviewed-by: Xavier Hernandez 
Tested-by: Gluster Build System 
Reviewed-by: Raghavendra Bhat

cluster/ec: Handle internal xattr get/set

2015-02-04T11:53:33+00:00

        Backport of http://review.gluster.org/9385

Problem:
Internal xattrs of EC like trusted.ec.size/config/version
can be modified by users and that can lead to misbehavior
in EC.

Fix:
Don't let the user modify the xattrs. Hide these xattrs
in getfattr outputs.

BUG: 1182490
Change-Id: Ie32ebb95ee67cabbb9488951097a517172b45bcf
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/9455
Reviewed-by: Xavier Hernandez 
Tested-by: Gluster Build System 
Reviewed-by: Raghavendra Bhat

ec: Fix incorrect value of EC_MAX_NODES

2014-12-18T12:23:15+00:00

EC_MAX_NODES was incorrectly calculated. Now the value if computed
as the minimum between the theoretical maximum and the limit imposed
by the Galois Field.

This is a backport of http://review.gluster.org/9193/

Change-Id: I75a8345147f344f051923d66be2c10d405370c7b
BUG: 1170959
Signed-off-by: Xavier Hernandez 
Reviewed-on: http://review.gluster.org/9245
Reviewed-by: Dan Lambright 
Tested-by: Gluster Build System 
Reviewed-by: Raghavendra Bhat 
Tested-by: Raghavendra Bhat

ec: Change license

2014-12-13T06:06:13+00:00

This is a backport of http://review.gluster.org/9201/

Change-Id: Iae90ade2421898417b53dec0417a610cf306c44b
BUG: 1170515
Signed-off-by: Xavier Hernandez 
Reviewed-on: http://review.gluster.org/9233
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur 
Reviewed-by: Raghavendra Bhat 
Tested-by: Raghavendra Bhat

ec: Add state dump support

2014-10-04T15:25:53+00:00

This is a backport of http://review.gluster.org/8891/

Change-Id: I4504f3050674dde217e79af28cb4d2b5370fe2d5
BUG: 1148093
Signed-off-by: Xavier Hernandez 
Reviewed-on: http://review.gluster.org/8899
Tested-by: Gluster Build System 
Reviewed-by: Dan Lambright 
Reviewed-by: Vijay Bellur

ec: Optimize read/write performance

2014-09-16T17:14:28+00:00

This patch significantly improves performance of read/write
operations on a dispersed volume by reusing previous inodelk/
entrylk operations on the same inode/entry. This reduces the
latency of each individual operation considerably.

Inode version and size are also updated when needed instead
of on each request. This gives an additional boost.

This is a backport of http://review.gluster.org/8369/

Change-Id: I4b98d5508c86b53032e16e295f72a3f83fd8fcac
BUG: 1140844
Signed-off-by: Xavier Hernandez 
Reviewed-on: http://review.gluster.org/8746
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy 
Reviewed-by: Dan Lambright

ec: Do not destroy inode context on inode invalidation

2014-09-12T14:08:35+00:00

Currently there is no need to handle inode invalidation requests,
so this callback has been removed.

This is a backport of http://review.gluster.org/8420/

Change-Id: I0ac2e47679bf62b1493e0403178305923bc036e8
BUG: 1140846
Signed-off-by: Xavier Hernandez 
Reviewed-on: http://review.gluster.org/8702
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

cluster/ec: Added erasure code translator

2014-07-11T17:33:40+00:00

Change-Id: I293917501d5c2ca4cdc6303df30cf0b568cea361
BUG: 1118629
Signed-off-by: Xavier Hernandez 
Reviewed-on: http://review.gluster.org/7749
Reviewed-by: Krishnan Parthasarathi 
Reviewed-by: Jeff Darcy 
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur