glusterfs.git/libglusterfs/src/common-utils.c, branch v3.8.8

afr: Ignore gluster internal (virtual) xattrs in metadata heal check

2016-09-29T07:10:18+00:00

Backport of http://review.gluster.org/#/c/15548/

Problem:
In arbiter configuration, posix-xlator in the arbiter brick always sets the
GF_CONTENT_KEY in the response dict with a value 0. If the file size on the
data bricks is more than quick-read's max-file-size (64kb default), those
bricks don't set the key. Because of this difference in the no. of dict
elements, afr triggers metadata heal in lookup code path, in turn leading to
extra lookups+inodelks.

Fix:
Changed afr dict comparison logic to ignore all virtual xattrs and the on-disk
ones that we should not be healing.

Change-Id: I05730bdd39d8fb0b9a49a5fc9c0bb01f0d3bb308
BUG: 1377193
Signed-off-by: Ravishankar N 
Reviewed-on: http://review.gluster.org/15578
Smoke: Gluster Build System 
NetBSD-regression: NetBSD Build System 
CentOS-regression: Gluster Build System 
Reviewed-by: Pranith Kumar Karampuri

quotad: fix potential buffer overflows

2016-08-27T11:10:42+00:00

This converts sprintf to gf_asprintf in following components:                                                                                                          * quotad.c
* dht
* afr
* protocol/client
* rpc/rpc-lib
* rpc/rpc-transport

        This is a backport of http://review.gluster.org/#/c/14102/

> Change-Id: If8a267bab3d91003bdef3a92664077a0136745ee
> BUG: 1332073
> Signed-off-by: Raghavendra G 
> Reviewed-on: http://review.gluster.org/14102
> Tested-by: Manikandan Selvaganesh 
> Smoke: Gluster Build System 
> NetBSD-regression: NetBSD Build System 
> CentOS-regression: Gluster Build System 
> Reviewed-by: Manikandan Selvaganesh 

Change-Id: If8a267bab3d91003bdef3a92664077a0136745ee
BUG: 1366746
Signed-off-by: Raghavendra G 
Reviewed-on: http://review.gluster.org/15325
Smoke: Gluster Build System 
Tested-by: Manikandan Selvaganesh 
CentOS-regression: Gluster Build System 
NetBSD-regression: NetBSD Build System

cluster/afr: Prevent split-brain when bricks are brought off and on in cyclic order

2016-08-22T10:22:36+00:00

        Backport of: http://review.gluster.org/15080

When the bricks are brought offline and then online in cyclic
order while writes are in progress on a file, thanks to inode
refresh in write txns, AFR will mostly fail the write attempt
when the only good copy is offline. However, there is still a
remote possibility that the file will run into split-brain if
the brick that has the lone good copy goes offline *after* the
inode refresh but *before* the write txn completes (I call it
in-flight split-brain in the patch for ease of reference),
requiring intervention from admin to resolve the split-brain
before the IO can resume normally on the file. To get around this,
the patch does the following things:
i) retains the dirty xattrs on the file
ii) avoids marking the last of the good copies as bad (or accused)
    in case it is the one to go down during the course of a write.
iii) fails that particular write with the appropriate errno.

This way, we still have one good copy left despite the split-brain situation
which when it is back online, will be chosen as source to do the heal.

> Change-Id: I9ca634b026ac830b172bac076437cc3bf1ae7d8a
> BUG: 1363721
> Signed-off-by: Krutika Dhananjay 
> Reviewed-on: http://review.gluster.org/15080
> Tested-by: Pranith Kumar Karampuri 
> Smoke: Gluster Build System 
> CentOS-regression: Gluster Build System 
> Reviewed-by: Ravishankar N 
> Reviewed-by: Oleksandr Natalenko 
> NetBSD-regression: NetBSD Build System 
> Reviewed-by: Pranith Kumar Karampuri 
(cherry picked from commit fcb5b70b1099d0379b40c81f35750df8bb9545a5)

Change-Id: I157f1025aebd6624fa3d412abc69a4ae6f2fe9e0
BUG: 1367272
Signed-off-by: Krutika Dhananjay 
Signed-off-by: Oleksandr Natalenko 
Reviewed-on: http://review.gluster.org/15221
NetBSD-regression: NetBSD Build System 
CentOS-regression: Gluster Build System 
Smoke: Gluster Build System 
Reviewed-by: Pranith Kumar Karampuri

rpc/socket.c: Modify approach to cleanup threads of socket_poller in socket_spawn.

2016-07-21T14:24:48+00:00

Problem: Current approach to cleanup threads of socket_poller is not appropriate.

Solution: Enable detach flag at the time of thread creation in socket_spawn.

Fix: Write a new wrapper(gf_create_detach_thread) to create detachable thread
     instead of store thread ids in a queue.

Test: Fix is verfied on gluster process, To test the patch followed below procedure
      Enable the client.ssl and server.ssl option on the volume
      Start the volume and count anon segment in pmap output for glusterd process
      pmap -x  | grep "\[ anon \]" | wc -l
      Stop the volume and check again count of anon segment it should not increase.

Backport of commit 2ee48474be32f6ead2f3834677fee89d88348382

> Signed-off-by: Mohit Agrawal 
> Change-Id: Ib8f7ec7504ec8f6f74b45ce6719b6fb47f9fdc37
> BUG: 1336508
> Reviewed-on: http://review.gluster.org/14694
> Smoke: Gluster Build System 
> Reviewed-by: Atin Mukherjee 
> CentOS-regression: Gluster Build System 
> NetBSD-regression: NetBSD Build System 
> Reviewed-by: Jeff Darcy 

BUG: 1354395
Change-Id: Ibdbbae508d9dda2fd36220a9b1e47f7776336929
Signed-off-by: Mohit Agrawal 
Reviewed-on: http://review.gluster.org/14891
Smoke: Gluster Build System 
NetBSD-regression: NetBSD Build System 
Reviewed-by: N Balachandran 
CentOS-regression: Gluster Build System 
Reviewed-by: Jeff Darcy

afr, index: Clean up stale directory and file indices in granular entry sh

2016-07-15T13:43:13+00:00

	Backport of: http://review.gluster.org/14832

Specifically when a directory tree is removed (rm -rf)
while a brick is down, both the directory index and the
name indices of the files and subdirs under it will remain.
Self-heal will need to pick up these and remove them.

Towards this, afr sh will now also crawl indices/entry-changes
and call an rmdir on the dir if the directory index is stale.

On the brick side, rmdir fop has been implemented for index xl,
which would delete the directory index and its contents if present
in a synctask.

Change-Id: I08f45201adca56737ec2be1aab5433aebaefefd0
BUG: 1355609
Signed-off-by: Krutika Dhananjay 
Reviewed-on: http://review.gluster.org/14920
Smoke: Gluster Build System 
CentOS-regression: Gluster Build System 
NetBSD-regression: NetBSD Build System 
Reviewed-by: Ravishankar N 
Reviewed-by: Jeff Darcy

cluster/afr: Don't let NFS cache stat after writes

2016-05-14T14:30:21+00:00

Problem:
Afr does post-ops after write but the stat buffer it unwinds is at the
time of write, so if nfs client caches this, it will see different
ctime when it does stat on it after post-op is done. From NFS client's
perspective it thinks the file is changed. Tar which depends on this
to be correct keeps giving 'file changed as we read it' warning.
If Afr instead has to choose to unwind after post-op, eager-lock,
delayed-post-op will have to be disabled which will lead to bad
performance for all write usecases.

Fix:
Don't let client cache stat after write.

 >Change-Id: Ic6062acc6e5cdd97a9c83c56bd529ec83cee8a23
 >BUG: 1302948
 >Signed-off-by: Pranith Kumar K 
 >Signed-off-by: Anuradha Talur 
 >Reviewed-on: http://review.gluster.org/13785
 >Smoke: Gluster Build System 
 >NetBSD-regression: NetBSD Build System 
 >CentOS-regression: Gluster Build System 
 >Reviewed-by: Niels de Vos 

BUG: 1335285
Change-Id: Ibef4fc80496d12acd15db57713af2e3a1c9109a7
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/14300
Smoke: Gluster Build System 
NetBSD-regression: NetBSD Build System 
CentOS-regression: Gluster Build System 
Reviewed-by: Ravishankar N 
Reviewed-by: Niels de Vos

core: add setactivelk () fop

2016-05-02T01:04:42+00:00

Change-Id: Ic2ba77a1fdd27801a6e579e04e6c0dd93cd7127b
BUG: 1326085
Signed-off-by: Susant Palai 
Reviewed-on: http://review.gluster.org/14011
Reviewed-by: Niels de Vos 
Smoke: Gluster Build System 
NetBSD-regression: NetBSD Build System 
CentOS-regression: Gluster Build System

core: add getactivelk () fop

2016-05-02T01:04:21+00:00

Change-Id: Ifd0ff278dcf43da064021f5c25e5dcd34347fcde
BUG: 1326085
Signed-off-by: Susant Palai 
Reviewed-on: http://review.gluster.org/13970
Smoke: Gluster Build System 
Reviewed-by: Niels de Vos 
NetBSD-regression: NetBSD Build System 
CentOS-regression: Gluster Build System

rpc: fix gf_process_reserved_ports

2016-04-27T15:05:08+00:00

this patch also does minor code cleanups.

Change-Id: I0d005bd0f9baaaae498aa1df4faa6fcb65fa7a6e
BUG: 1198849
Signed-off-by: Prasanna Kumar Kalever 
Reviewed-on: http://review.gluster.org/13997
Tested-by: Prasanna Kumar Kalever 
Smoke: Gluster Build System 
Reviewed-by: Atin Mukherjee 
CentOS-regression: Gluster Build System 
Reviewed-by: Jeff Darcy 
NetBSD-regression: NetBSD Build System

performance/decompounder: Introducing decompounder xlator

2016-04-26T06:47:28+00:00

This xlator decompounds the compound fops received,
and executes them serially.

Change-Id: Ieddcec3c2983dd9ca7919ba9d7ecaa5192a5f489
BUG: 1303829
Signed-off-by: Anuradha Talur 
Reviewed-on: http://review.gluster.org/13577
Smoke: Gluster Build System 
NetBSD-regression: NetBSD Build System 
CentOS-regression: Gluster Build System 
Reviewed-by: Pranith Kumar Karampuri