glusterfs.git/xlators/mgmt/glusterd/src/glusterd-locks.c, branch v4.0dev

dict: dict_set_bin() should never free the pointer on error

2015-07-24T15:09:08+00:00

dict_set_bin() is handling the pointer that it passed inconsistently.
Depending on the errors that can occur, the pointer passed to the dict
can be free'd, but there is no guarantee.

It is cleaner to have the caller free the pointer that allocated it and
dict_set_bin() returned an error. When dict_set_bin() returned success,
the given pointer will be free'd when dict_unref() calls data_destroy().

Many callers of dict_set_bin() already take care of free'ing the pointer
on error. The ones that did not, are corrected with this change too.

Change-Id: I39a4f7ebc0cae6d403baba99307d7ce408f25966
BUG: 1242280
Signed-off-by: Niels de Vos 
Reviewed-on: http://review.gluster.org/11638
Tested-by: Gluster Build System 
Reviewed-by: jiffin tony Thottan 
Reviewed-by: Raghavendra G 
Tested-by: NetBSD Build System

glusterd: Porting the left out gf_log_callingfns to new framework

2015-07-18T12:08:04+00:00

Change-Id: I1b0ad54238895475ddbacc4fffacac8dc6e887fe
BUG: 1235538
Signed-off-by: Nandaja Varma 
Reviewed-on: http://review.gluster.org/11590
Tested-by: Gluster Build System 
Tested-by: NetBSD Build System 
Reviewed-by: Atin Mukherjee

handshake,locks,mountbroker,syncop/glusterd:New logging framework

2015-06-15T06:55:59+00:00

Change-Id: If491a6945b7a0afa10165ff9f9874a244aece36f
BUG: 1194640
Signed-off-by: Nandaja Varma 
Reviewed-on: http://review.gluster.org/9864
Tested-by: Gluster Build System 
Tested-by: NetBSD Build System 
Reviewed-by: Atin Mukherjee

glusterd/snapshot: Return correct errno in events of failure - PATCH 2

2015-06-02T09:59:34+00:00

ENUM           RETCODE        ERROR
-------------------------------------------------------------
EG_INTRNL      30800          Internal Error
EG_OPNOTSUP    30801          Gluster Op Not Supported
EG_ANOTRANS    30802          Another Transaction in Progress
EG_BRCKDWN     30803          One or more brick is down
EG_NODEDWN     30804          One or more node is down
EG_HRDLMT      30805          Hard Limit is reached
EG_NOVOL       30806          Volume does not exist
EG_NOSNAP      30807          Snap does not exist
EG_RBALRUN     30808          Rebalance is running
EG_VOLRUN      30809          Volume is running
EG_VOLSTP      30810          Volume is not running
EG_VOLEXST     30811          Volume exists
EG_SNAPEXST    30812          Snapshot exists
EG_ISSNAP      30813          Volume is a snap volume
EG_GEOREPRUN   30814          Geo-Replication is running
EG_NOTTHINP    30815          Bricks are not thinly provisioned

Change-Id: I49a170cdfd77df11fe677e09f4e063d99b159275
BUG: 1212413
Signed-off-by: Avra Sengupta 
Reviewed-on: http://review.gluster.org/10588
Tested-by: Gluster Build System 
Reviewed-by: Rajesh Joseph 
Reviewed-by: Krishnan Parthasarathi

build: do not #include "config.h" in each file

2015-05-29T12:43:17+00:00

Instead of including config.h in each file, and have the additional
config.h included from the compiler commandline (-include option).

When a .c file tests for a certain #define, and config.h was not
included, incorrect assumtions were made. With this change, it can not
happen again.

BUG: 1222319
Change-Id: I4f9097b8740b81ecfe8b218d52ca50361f74cb64
Signed-off-by: Niels de Vos 
Reviewed-on: http://review.gluster.org/10808
Tested-by: Gluster Build System 
Tested-by: NetBSD Build System
Reviewed-by: Kaleb KEITHLEY 
Reviewed-by: Pranith Kumar Karampuri

glusterd/snapshot: Return correct errno in events of failure - PATCH 1

2015-05-29T02:38:05+00:00

RETCODE              ERROR
-------------------------------------------
30800                Internal Error
30801                Another Transaction In Progress

Change-Id: Ica7fd2e513b2c28717b6df73cfb2667725dbf057
BUG: 1212413
Signed-off-by: Avra Sengupta 
Reviewed-on: http://review.gluster.org/10313
Reviewed-by: Rajesh Joseph 
Tested-by: Gluster Build System 
Tested-by: NetBSD Build System
Reviewed-by: Krishnan Parthasarathi

NFS-Ganesha : Locking global options file

2015-05-06T12:33:40+00:00

Global option gluster features.ganesha enable
writes into the global 'option' file. The snapshot
feature also writes into the same file.

To handle concurrent multiple transactions correctly,
a new lock has to be introduced on this file.
Every operation using this file needs
to contest for the new lock type.

Change-Id: Ia8a324d2a466717b39f2700599edd9f345b939a9
BUG: 1200254
Signed-off-by: Meghana Madhusudhan 
Reviewed-on: http://review.gluster.org/10130
Reviewed-by: Avra Sengupta 
Tested-by: Gluster Build System 
Reviewed-by: soumya k 
Tested-by: NetBSD Build System
Reviewed-by: Kaleb KEITHLEY

Avoid conflict between contrib/uuid and system uuid

2015-04-04T17:48:35+00:00

glusterfs relies on Linux uuid implementation, which
API is incompatible with most other systems's uuid. As
a result, libglusterfs has to embed contrib/uuid,
which is the Linux implementation, on non Linux systems.
This implementation is incompatible with systtem's
built in, but the symbols have the same names.

Usually this is not a problem because when we link
with -lglusterfs, libc's symbols are trumped. However
there is a problem when a program not linked with
-lglusterfs will dlopen() glusterfs component. In
such a case, libc's uuid implementation is already
loaded in the calling program, and it will be used
instead of libglusterfs's implementation, causing
crashes.

A possible workaround is to use pre-load libglusterfs
in the calling program (using LD_PRELOAD on NetBSD for
instance), but such a mechanism is not portable, nor
is it flexible. A much better approach is to rename
libglusterfs's uuid_* functions to gf_uuid_* to avoid
any possible conflict. This is what this change attempts.

BUG: 1206587
Change-Id: I9ccd3e13afed1c7fc18508e92c7beb0f5d49f31a
Signed-off-by: Emmanuel Dreyfus 
Reviewed-on: http://review.gluster.org/10017
Tested-by: Gluster Build System 
Reviewed-by: Niels de Vos

glusterd: statedump support

2014-10-15T10:02:40+00:00

Although glusterd currently has statedump support but it doesn't dump its
context information. Implementing glusterd_dump_priv function to export per-node
glusterd information would be useful for debugging bugs. Once implemented, we
could enhance sos-report to fetch this information. This would potentially
reduce our time to root cause and data needed for debugability can be dumped
gradually.

Following is the main items of the dump list targeted in this patch :

    * Supported max/min op-version and current op-version
    * Information about peer list
    * Information about peer list involved while a transaction is going on
      (xaction_peers)
    * option dictionary in glusterd_conf_t
    * mgmt_v3_lock in glusterd_conf_t
    * List of connected clients
    * uuid of glusterd
    * A section of rpc related information like live connections and their
      statistics

There are couple of issues which were found during implementation and testing
phase:
 - xaction_peers of glusterd_conf_t was not initialized in init because of which
   traversing through this list head was crashing when there was no active
   transaction
 - gf_free was not setting the typestr to NULL if the the alloc count becomes 0
   for a mem-type earlier allocated.

Change-Id: Ic9bce2d57682fc1771cd2bc6af0b7316ecbc761f
BUG: 1139682
Signed-off-by: Atin Mukherjee 
Reviewed-on: http://review.gluster.org/8665
Tested-by: Gluster Build System 
Reviewed-by: Kaushal M

glusterd: Add last successful glusterd lock backtrace

2014-09-22T11:08:58+00:00

Also, moved the backtrace fetching logic to a separate function.
Modified the backtrace fetching logic able to work under memory pressure
conditions.

Change-Id: Ie38bea425a085770f41831314aeda95595177ece
BUG: 1138503
Signed-off-by: Krishnan Parthasarathi 
Reviewed-on: http://review.gluster.org/8584
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy 
Reviewed-by: Atin Mukherjee