glusterfs.git/xlators, branch v3.4.0alpha2

performance/write-behind: guarantee non-overlapping concurrent writes

2013-03-07T07:30:14+00:00

Maintain a list of writes (either written behind or SYNC) which are
currently "in progress" (i.e, STACK_WIND'ed towards server) and hold
off any new STACK_WIND of write (either written behind or SYNC) which
overlaps with any of the "in progress" writes.

This is a guarantee which AFR's eager-lock depends upon (though not
strictly a write-behind requirement)

Change-Id: Icedd0b51b440366a906dc9223d62b7fd6ef2ca03
BUG: 857673
Original-author: Anand Avati 
Signed-off-by: Anand Avati 
Signed-off-by: Jeff Darcy 
Reviewed-on: http://review.gluster.org/4642
Tested-by: Gluster Build System

glusterd: Increasing throughput of synctask based mgmt ops.

2013-03-07T06:06:30+00:00

Change-Id: Ibd963f78707b157fc4c9729aa87206cfd5ecfe81
BUG: 913662
Signed-off-by: Krishnan Parthasarathi 
Reviewed-on: http://review.gluster.org/4638
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy

volgen: Use bind-address option for bricks when option set on glusterd

2013-03-07T06:05:38+00:00

Brick processes listen on all the interfaces on a given port.
When multiple glusterds run on one machine, glusterd assumes
that it 'owns' the ports on that machine. This can lead to the
different glusterd instances to step on each other's ports.
This fix ensures that brick processes listen only on the its
host IP when glusterd has bind-address option set.

Change-Id: I4c1b05643c64d3098bf56e977e768e611ffce0f5
BUG: 913662
Signed-off-by: Krishnan Parthasarathi 
Reviewed-on: http://review.gluster.org/4637
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy

performance/write-behind: mark fd bad if any written behind writes fail

2013-03-07T05:18:00+00:00

BUG: 765473
Change-Id: I1ddd6ef9f5361aed96f97aa1344823836c6ddecb
Signed-off-by: Raghavendra G 
Reviewed-on: http://review.gluster.org/4630
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy

Do not call xdr_string() with a NULL error message

2013-03-06T05:04:09+00:00

It is illegal to call xdr_string() with a NULL string. Linux
just retruns false, NetBSD gets a SIGSEGV when xdr_string()
calls strlen(NULL)

BUG: 916439
Change-Id: Ia958470ada6e8e55a86d439922ec942d038f5f13
Original-author: Emmanuel Dreyfus 
Signed-off-by: Emmanuel Dreyfus 
Signed-off-by: Jeff Darcy 
Reviewed-on: http://review.gluster.org/4629

cluster/afr: do complete split-brain check in all the fd based fops

2013-03-05T10:22:46+00:00

fd based operations such as readv checked only for data split brain
instead of complete split-brain (i.e both data + metadata) assuming that
open would have done the complete split-brain check. However open-behind
would have unwound open, without winding to afr thus preventing the complete
split-brain check and some appliations will be able to read the contents
of the file even though the file has metadata split-brain. So let all
the fd based fops do a defensive check of complete split-brain.

Change-Id: I0ea52f782b371ce73e8e1c61f9def438fce1bd28
BUG: 846240
Signed-off-by: Raghavendra Bhat 
Reviewed-on: http://review.gluster.org/4620
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

glusterd: Fix check for task-id existence in 'volume status'

2013-03-05T09:05:59+00:00

This fixes the issue of task-id tests failing randomly. The condition used to
check rebalance/remove-brick was running was wrong, which could lead to the
task-id for these tasks to not be displayed even when the actual commit hadn't
occured.

BUG: 857330
Change-Id: I0f86c6bbe7acec586ee0ea6e663369ea26171904
Signed-off-by: Kaushal M 
Reviewed-on: http://review.gluster.org/4617
Reviewed-by: Jeff Darcy 
Tested-by: Gluster Build System

rpc: bring in root-squashing behavior in rpc

2013-03-05T07:44:04+00:00

* requests coming in as root are converted to nfsnobody

* with open-behind some acl checks wont happen and nfsnobody
  can read the file "whose owner is root and other users do not
  have permission to read the file". This is becasue open-behind
  does not send the open to the brick and sends success to the
  application, thus the acl related tests on the file wont happen
  which would have prevented the file from being opened.

Change-Id: I12a3e6b2a12884d00bb81f2779074fed09b1b2e4
BUG: 887145
Signed-off-by: Raghavendra Bhat 
Reviewed-on: http://review.gluster.org/4619
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy

cluster/distribute: Reopen fds in migration internally as root:root

2013-03-04T10:42:30+00:00

Though linkfile_create and rebalance dst file create sent a setattr
with correct ownership, there is still a race window where the linkfile
open (client open due to migration) will fail, as its ownership will be
root:root.

BUG: 884597
Change-Id: Iba73681eae4f280d39ee6c9a40009e195768bee7
Signed-off-by: shishir gowda 
Reviewed-on: http://review.gluster.org/4612
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy

cluster/distribute: Prevent spurious multiple defrag crawls

2013-03-04T10:42:10+00:00

In dht_notify, we used to create a thread to start defrag
crawls after we had heard from all child subvols.
This was in-correct, as a later event, could also trigger the
crawl again(due to the fact that all subvols had responded).

The fix is to make sure, the thread is started only once after
all subvols have responded the first time

BUG: 916449
Change-Id: I1619344fbb1cb51d5e1db38d8a29821fa870fa8b
Signed-off-by: shishir gowda 
Reviewed-on: http://review.gluster.org/4610
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy