glusterfs.git, branch v3.5.5 GlusterFS is a distributed file-system capable of scaling to several petabytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. doc: release notes for GlusterFS 3.5.5 2015-07-07T18:19:40+00:00 Niels de Vos ndevos@redhat.com 2015-07-07T16:50:45+00:00 191725abf5754e4e883ed945a5560418a9b6b23d BUG: 1208083 Change-Id: I3559f6d03c049b55009fcd116c48b99a7434ab6c Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/11568 Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> 
BUG: 1208083
Change-Id: I3559f6d03c049b55009fcd116c48b99a7434ab6c
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/11568
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
nfs: make it possible to disable nfs.mount-rmtab 2015-07-07T16:11:58+00:00 Niels de Vos ndevos@redhat.com 2015-06-21T13:07:58+00:00 3cf776c49bc60b7f616a4c503a8b10b2d19ad04b When there are many NFS-clients doing very often mount/unmount actions, the updating of the 'rmtab' can become a bottleneck and cause delays. In these situations, the output of 'showmount' may be less important than the responsiveness of the (un)mounting. By setting 'nfs.mount-rmtab' to the value "/-", the cache file is not updated anymore, and the entries are only kept in memory. Cherry picked from commit 40407afb529f6e5fa2f79e9778c2f527122d75eb: > Cherry picked from commit 331ef6e1a86bfc0a93f8a9dec6ad35c417873849: >> BUG: 1169317 >> Change-Id: I40c4d8d754932f86fb2b1b2588843390464c773d >> Reported-by: Cyril Peponnet <cyril@peponnet.fr> >> Signed-off-by: Niels de Vos <ndevos@redhat.com> >> Reviewed-on: http://review.gluster.org/9223 >> Tested-by: Gluster Build System <jenkins@build.gluster.com> >> Reviewed-by: soumya k <skoduri@redhat.com> >> Reviewed-by: jiffin tony Thottan <jthottan@redhat.com> >> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> > > This change also contains the fixes to the test-case from: >> >> nfs: fix spurious failure in bug-1166862.t >> >> In some environments, "showmount" could return an NFS-client that does >> not start with "1". This would cause the test-case to fail. The check is >> incorrect, the number of lines should get counted instead. >> >> Also moving the test-case to the .../nfs/... subdirectory. >> >> Cherry picked from commit ee9b35a780607daddc2832b9af5ed6bf414aebc0: >> BUG: 1166862 >> Change-Id: Ic03aa8145ca57d78aea01564466e924b03bb302a >> Signed-off-by: Niels de Vos <ndevos@redhat.com> >> Reviewed-on: http://review.gluster.org/10419 >> Tested-by: Gluster Build System <jenkins@build.gluster.com> >> Reviewed-by: Vijay Bellur <vbellur@redhat.com> >> > > Change-Id: I40c4d8d754932f86fb2b1b2588843390464c773d > BUG: 1215385 > Signed-off-by: Niels de Vos <ndevos@redhat.com> > Reviewed-on: http://review.gluster.org/10379 > Tested-by: NetBSD Build System > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Reviewed-by: Vijay Bellur <vbellur@redhat.com> GLUSTERD_WORKDIR has been added to tests/include.rc and is not configurable through ./configure like on newer branches. It is not suitable to change the GlusterD working directory in an update for a stable release. Change-Id: I40c4d8d754932f86fb2b1b2588843390464c773d BUG: 1166862 Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/11336 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: jiffin tony Thottan <jthottan@redhat.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> 
When there are many NFS-clients doing very often mount/unmount actions,
the updating of the 'rmtab' can become a bottleneck and cause delays. In
these situations, the output of 'showmount' may be less important than
the responsiveness of the (un)mounting.

By setting 'nfs.mount-rmtab' to the value "/-", the cache file is not
updated anymore, and the entries are only kept in memory.

Cherry picked from commit 40407afb529f6e5fa2f79e9778c2f527122d75eb:
> Cherry picked from commit 331ef6e1a86bfc0a93f8a9dec6ad35c417873849:
>> BUG: 1169317
>> Change-Id: I40c4d8d754932f86fb2b1b2588843390464c773d
>> Reported-by: Cyril Peponnet <cyril@peponnet.fr>
>> Signed-off-by: Niels de Vos <ndevos@redhat.com>
>> Reviewed-on: http://review.gluster.org/9223
>> Tested-by: Gluster Build System <jenkins@build.gluster.com>
>> Reviewed-by: soumya k <skoduri@redhat.com>
>> Reviewed-by: jiffin tony Thottan <jthottan@redhat.com>
>> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
>
> This change also contains the fixes to the test-case from:
>>
>> nfs: fix spurious failure in bug-1166862.t
>>
>> In some environments, "showmount" could return an NFS-client that does
>> not start with "1". This would cause the test-case to fail. The check is
>> incorrect, the number of lines should get counted instead.
>>
>> Also moving the test-case to the .../nfs/... subdirectory.
>>
>> Cherry picked from commit ee9b35a780607daddc2832b9af5ed6bf414aebc0:
>> BUG: 1166862
>> Change-Id: Ic03aa8145ca57d78aea01564466e924b03bb302a
>> Signed-off-by: Niels de Vos <ndevos@redhat.com>
>> Reviewed-on: http://review.gluster.org/10419
>> Tested-by: Gluster Build System <jenkins@build.gluster.com>
>> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
>>
>
> Change-Id: I40c4d8d754932f86fb2b1b2588843390464c773d
> BUG: 1215385
> Signed-off-by: Niels de Vos <ndevos@redhat.com>
> Reviewed-on: http://review.gluster.org/10379
> Tested-by: NetBSD Build System
> Tested-by: Gluster Build System <jenkins@build.gluster.com>
> Reviewed-by: Vijay Bellur <vbellur@redhat.com>

GLUSTERD_WORKDIR has been added to tests/include.rc and is not
configurable through ./configure like on newer branches. It is not
suitable to change the GlusterD working directory in an update for a
stable release.

Change-Id: I40c4d8d754932f86fb2b1b2588843390464c773d
BUG: 1166862
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/11336
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: jiffin tony Thottan <jthottan@redhat.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
features/quota : Fix XML output for quota list command 2015-07-07T16:11:38+00:00 vmallika vmallika@redhat.com 2015-06-15T07:01:48+00:00 c9e92231e8fb31e6e4a9f061746daaedd77ad1b7 This is a backport of http://review.gluster.org/#/c/9481/ > Sample output: > --------------- > > Sample 1) > ---------- > [root@snapshot-28 glusterfs]# gluster volume quota vol1 list /dir1 /dir4 > /dir5 --xml > <?xml version="1.0" encoding="UTF-8" standalone="yes"?> > <cliOutput> > <opRet>0</opRet> > <opErrno>0</opErrno> > <opErrstr/> > <volQuota> > <limit> > <path>/dir1</path> > <hard_limit>10.0MB</hard_limit> > <soft_limit>80%</soft_limit> > <used_space>0Bytes</used_space> > <avail_space>10.0MB</avail_space> > </limit> > <limit> > <path>/dir4</path> > <path>No such file or directory</path> > </limit> > <limit> > <path>/dir5</path> > <path>No such file or directory</path> > </limit> > </volQuota> > </cliOutput> > > Sample 2) > --------- > gluster volume quota vol1 list --xml > <?xml version="1.0" encoding="UTF-8" standalone="yes"?> > <cliOutput> > <opRet>0</opRet> > <opErrno>0</opErrno> > <opErrstr/> > <volQuota/> > </cliOutput> > <?xml version="1.0" encoding="UTF-8" standalone="yes"?> > <cliOutput> > <volQuota> > <limit> > <path>/dir</path> > <hard_limit>10.0MB</hard_limit> > <soft_limit>80%</soft_limit> > <used_space>0Bytes</used_space> > <avail_space>10.0MB</avail_space> > </limit> > <limit> > <path>/dir1</path> > <hard_limit>10.0MB</hard_limit> > <soft_limit>80%</soft_limit> > <used_space>0Bytes</used_space> > <avail_space>10.0MB</avail_space> > </limit> > </volQuota> > </cliOutput> > > Change-Id: I8a8d83cff88f778e5ee01fbca07d9f94c412317a > BUG: 1185259 > Signed-off-by: Sachin Pandit <spandit@redhat.com> > Reviewed-on: http://review.gluster.org/9481 > Reviewed-by: Vijaikumar Mallikarjuna <vmallika@redhat.com> > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Reviewed-by: Kaushal M <kaushal@redhat.com> Change-Id: Ibdf51db626a07e68b5ace98140877f6d21918c20 BUG: 1231641 Signed-off-by: vmallika <vmallika@redhat.com> Reviewed-on: http://review.gluster.org/11220 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Sachin Pandit <spandit@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> 
This is a backport of http://review.gluster.org/#/c/9481/

> Sample output:
> ---------------
>
> Sample 1)
> ----------
> [root@snapshot-28 glusterfs]# gluster volume quota vol1 list /dir1 /dir4
> /dir5 --xml
> <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
> <cliOutput>
>   <opRet>0</opRet>
>   <opErrno>0</opErrno>
>   <opErrstr/>
>   <volQuota>
>     <limit>
>       <path>/dir1</path>
>       <hard_limit>10.0MB</hard_limit>
>       <soft_limit>80%</soft_limit>
>       <used_space>0Bytes</used_space>
>       <avail_space>10.0MB</avail_space>
>     </limit>
>     <limit>
>       <path>/dir4</path>
>       <path>No such file or directory</path>
>     </limit>
>     <limit>
>       <path>/dir5</path>
>       <path>No such file or directory</path>
>     </limit>
>   </volQuota>
> </cliOutput>
>
> Sample 2)
> ---------
> gluster volume quota vol1 list --xml
> <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
> <cliOutput>
>   <opRet>0</opRet>
>   <opErrno>0</opErrno>
>   <opErrstr/>
>   <volQuota/>
> </cliOutput>
> <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
> <cliOutput>
>   <volQuota>
>     <limit>
>       <path>/dir</path>
>       <hard_limit>10.0MB</hard_limit>
>       <soft_limit>80%</soft_limit>
>       <used_space>0Bytes</used_space>
>       <avail_space>10.0MB</avail_space>
>     </limit>
>     <limit>
>       <path>/dir1</path>
>       <hard_limit>10.0MB</hard_limit>
>       <soft_limit>80%</soft_limit>
>       <used_space>0Bytes</used_space>
>       <avail_space>10.0MB</avail_space>
>     </limit>
>   </volQuota>
> </cliOutput>
>
> Change-Id: I8a8d83cff88f778e5ee01fbca07d9f94c412317a
> BUG: 1185259
> Signed-off-by: Sachin Pandit <spandit@redhat.com>
> Reviewed-on: http://review.gluster.org/9481
> Reviewed-by: Vijaikumar Mallikarjuna <vmallika@redhat.com>
> Tested-by: Gluster Build System <jenkins@build.gluster.com>
> Reviewed-by: Kaushal M <kaushal@redhat.com>

Change-Id: Ibdf51db626a07e68b5ace98140877f6d21918c20
BUG: 1231641
Signed-off-by: vmallika <vmallika@redhat.com>
Reviewed-on: http://review.gluster.org/11220
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Sachin Pandit <spandit@redhat.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
quota: Validate NULL inode from the entries received in readdirp_cbk 2015-06-28T19:52:19+00:00 vmallika vmallika@redhat.com 2015-04-30T10:58:27+00:00 5c8ee98a2dc6e7754ad37adcfd3a0e04014f266c This is a backport of http://review.gluster.org/#/c/10416/ > In quota readdirp_cbk, inode ctx filled for the all entries > received. > In marker readdirp_cbk, files/directories are inspected for > dirty > There is no guarantee that entry->inode is populated. > If entry->inode is NULL, this needs to be treated as readdir > > Change-Id: Id2d17bb89e4770845ce1f13d73abc2b3c5826c06 > BUG: 1215550 > Signed-off-by: vmallika <vmallika@redhat.com> > Reviewed-on: http://review.gluster.org/10416 > Tested-by: NetBSD Build System > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Reviewed-by: Raghavendra G <rgowdapp@redhat.com> > Tested-by: Raghavendra G <rgowdapp@redhat.com> Change-Id: If6578984ab1a33a3bdbaf0ec169f7c9548991144 BUG: 1217433 Signed-off-by: vmallika <vmallika@redhat.com> Reviewed-on: http://review.gluster.org/10472 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> 
This is a backport of http://review.gluster.org/#/c/10416/

> In quota readdirp_cbk, inode ctx filled for the all entries
> received.
> In marker readdirp_cbk, files/directories are inspected for
> dirty

> There is no guarantee that entry->inode is populated.
> If entry->inode is NULL, this needs to be treated as readdir
>
> Change-Id: Id2d17bb89e4770845ce1f13d73abc2b3c5826c06
> BUG: 1215550
> Signed-off-by: vmallika <vmallika@redhat.com>
> Reviewed-on: http://review.gluster.org/10416
> Tested-by: NetBSD Build System
> Tested-by: Gluster Build System <jenkins@build.gluster.com>
> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
> Tested-by: Raghavendra G <rgowdapp@redhat.com>

Change-Id: If6578984ab1a33a3bdbaf0ec169f7c9548991144
BUG: 1217433
Signed-off-by: vmallika <vmallika@redhat.com>
Reviewed-on: http://review.gluster.org/10472
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
posix: handle failure from posix_resolve 2015-06-28T19:51:01+00:00 vmallika vmallika@redhat.com 2015-04-30T10:56:03+00:00 734f68f4116fd32066aa49cda93707b02ba194cf This is backport of http://review.gluster.org/#/c/9941/ > When building ancestory, posix_resolve gets the inode > from the gfid. We need to handle the failure case from > this function > > Change-Id: I19f0f0c739686b1b0ef96309212aa1c7911b3589 > BUG: 1203629 > Signed-off-by: vmallika <vmallika@redhat.com> > Reviewed-on: http://review.gluster.org/9941 > Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com> > Tested-by: Gluster Build System <jenkins@build.gluster.com> > Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> > Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Change-Id: If3f9a910be3d08293199748c9e04b3be2d8633c7 BUG: 1217432 Signed-off-by: vmallika <vmallika@redhat.com> Reviewed-on: http://review.gluster.org/10471 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> 
This is backport of http://review.gluster.org/#/c/9941/

> When building ancestory, posix_resolve gets the inode
> from the gfid. We need to handle the failure case from
> this function
>
> Change-Id: I19f0f0c739686b1b0ef96309212aa1c7911b3589
> BUG: 1203629
> Signed-off-by: vmallika <vmallika@redhat.com>
> Reviewed-on: http://review.gluster.org/9941
> Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
> Tested-by: Gluster Build System <jenkins@build.gluster.com>
> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
> Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>

Change-Id: If3f9a910be3d08293199748c9e04b3be2d8633c7
BUG: 1217432
Signed-off-by: vmallika <vmallika@redhat.com>
Reviewed-on: http://review.gluster.org/10471
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
doc: release notes for GlusterFS 3.5.4 2015-06-03T20:30:43+00:00 Niels de Vos ndevos@redhat.com 2015-06-03T20:30:43+00:00 55bd875f0bf9edc92e42c4822c929fb0ace77086 BUG: 1141158 Change-Id: Ia1778a789ca1d9a76bdf3aea4976009700551109 Signed-off-by: Niels de Vos <ndevos@redhat.com> 
BUG: 1141158
Change-Id: Ia1778a789ca1d9a76bdf3aea4976009700551109
Signed-off-by: Niels de Vos <ndevos@redhat.com>
fuse: squash 64-bit inodes in readdirp when enable-ino32 is set 2015-06-03T20:23:55+00:00 Niels de Vos ndevos@redhat.com 2015-05-20T20:34:44+00:00 86487dfb7f51f552bb27a16568a612f14221cd49 The structures returned by readdirp contain the inode 2x. Only one of them was squashed into 32-bits when enable-ino32 is enabled. Backport of: > Change-Id: I33a6d28fb118bb23971f918ffeb983d7f033106e > BUG: 1223889 > Reviewed-on: http://review.gluster.org/10881 > Signed-off-by: Niels de Vos <ndevos@redhat.com> > Tested-by: Cyril Peponnet <cyril@peponnet.fr> [on release-3.5] Change-Id: I33a6d28fb118bb23971f918ffeb983d7f033106e BUG: 1222150 Signed-off-by: Niels de Vos <ndevos@redhat.com> Tested-by: Cyril Peponnet <cyril@peponnet.fr> Reviewed-on: http://review.gluster.org/10884 Tested-by: Gluster Build System <jenkins@build.gluster.com> 
The structures returned by readdirp contain the inode 2x. Only one of
them was squashed into 32-bits when enable-ino32 is enabled.

Backport of:
> Change-Id: I33a6d28fb118bb23971f918ffeb983d7f033106e
> BUG: 1223889
> Reviewed-on: http://review.gluster.org/10881
> Signed-off-by: Niels de Vos <ndevos@redhat.com>
> Tested-by: Cyril Peponnet <cyril@peponnet.fr> [on release-3.5]

Change-Id: I33a6d28fb118bb23971f918ffeb983d7f033106e
BUG: 1222150
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Tested-by: Cyril Peponnet <cyril@peponnet.fr>
Reviewed-on: http://review.gluster.org/10884
Tested-by: Gluster Build System <jenkins@build.gluster.com>
build: correct the version in glusterfs-api.pc 2015-04-24T12:22:47+00:00 Niels de Vos ndevos@redhat.com 2015-04-16T12:16:49+00:00 bfce25666d8a0d198292df4884d7d8d56ec0dc8c The version in glusterfs-api.pc has moved backwards, breaking existing versioned dependencies in QEMU. The following table contains the GlusterFS version and the version for glusterfs-api.pc: .------------------------. | GlusterFS | pkg-config | |-----------+------------| | 3.4.x | 4.3.4.x | | 3.5.x | 6.3.5.x | | 3.6.x | 7.3.6.x | | 3.7.x | 7.3.7.x | | master | 7.x.y.z | '------------------------' BUG: 1211841 Change-Id: I62168a0ab4f0c78e61987371ae75a0d2dd56ced8 URL: http://thread.gmane.org/gmane.comp.emulators.qemu/330176 Reported-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/10311 Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> 
The version in glusterfs-api.pc has moved backwards, breaking existing
versioned dependencies in QEMU. The following table contains the
GlusterFS version and the version for glusterfs-api.pc:

    .------------------------.
    | GlusterFS | pkg-config |
    |-----------+------------|
    |   3.4.x   |   4.3.4.x  |
    |   3.5.x   |   6.3.5.x  |
    |   3.6.x   |   7.3.6.x  |
    |   3.7.x   |   7.3.7.x  |
    |   master  |   7.x.y.z  |
    '------------------------'

BUG: 1211841
Change-Id: I62168a0ab4f0c78e61987371ae75a0d2dd56ced8
URL: http://thread.gmane.org/gmane.comp.emulators.qemu/330176
Reported-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/10311
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
doc: add release notes for 3.5.4beta1 2015-04-02T14:50:19+00:00 Niels de Vos ndevos@redhat.com 2015-04-01T13:32:58+00:00 0d00b9d66009787b90a429ab46b2f00927517dc3 BUG: 1141158 Change-Id: Icf040813e40c8e2d96fd284960a345c78ae29b1f Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/10104 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Humble Devassy Chirammal <humble.devassy@gmail.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> 
BUG: 1141158
Change-Id: Icf040813e40c8e2d96fd284960a345c78ae29b1f
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/10104
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Humble Devassy Chirammal <humble.devassy@gmail.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
cluster/afr: Make read child match check in afr optional 2015-03-18T11:21:28+00:00 Krutika Dhananjay kdhananj@redhat.com 2015-03-17T11:13:00+00:00 077185afe35350aae03bac0d25fbebcd8a3e1c72 Backport of: http://review.gluster.org/#/c/9917 Having this particular check which was introduced by commit bb2df4e63fa8a5d65f18b4a5efc757e8d475fbff causes a drop in performance in readdirp. So the behavior is made configurable with this patch. Change-Id: I9012a6bb955229a0cbb48f06e4e2edc0782dfead BUG: 1202675 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/9924 Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> 
        Backport of: http://review.gluster.org/#/c/9917

Having this particular check which was introduced by
commit bb2df4e63fa8a5d65f18b4a5efc757e8d475fbff causes a drop in
performance in readdirp. So the behavior is made configurable with this
patch.

Change-Id: I9012a6bb955229a0cbb48f06e4e2edc0782dfead
BUG: 1202675
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/9924
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>