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* dht: The xattrs sent in readdirp should be sent in opendir aswellPoornima G2017-04-272-33/+16
| | | | | | | | | | | | | | | | | | | | | | As readdir-ahead can be loaded as a child of dht, dht has to specify the xattrs it is intrested in, as part of opendir call itself. >Reviewed-on: https://review.gluster.org/16902 >Smoke: Gluster Build System <jenkins@build.gluster.org> >Reviewed-by: Raghavendra G <rgowdapp@redhat.com> >NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> >CentOS-regression: Gluster Build System <jenkins@build.gluster.org> >(cherry picked from commit 0f71338e1d7c0b70f4fe3b19c68612fe730d9de2) Change-Id: I012ef96cc143b0cef942df78aa7150d85ec38606 BUG: 1435942 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: https://review.gluster.org/16947 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Prashanth Pai <ppai@redhat.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* reddir-ahead: Fix EOD propagation problemPoornima G2017-04-131-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In readdirp fop, op_errno is overloaded to indicate the EOD detection. If op_errno contains ENOENT, then it indicates that there are no further entries pending read in the directory. Currently NFS uses the ENOENT to identify the EOD. Issue: NFS clients issues a 4K buffer for readdirp, readdir-ahead converts it to 128K buffer as its reading ahead. If there are 100 entries in the bricks, 128K can get all 100 and store in readdir-ahead, but only 23 entries that can be fit in 4K will be sent to NFS. Since the whole 100 entries were read from brick, the op_errno is set to ENOENT, and the op_errno is propagated as is when sent to NFS. Hence NFS client in reading 23 entries thinks it reached EOD. Solution: Do not propogate ENOENT errno, unless all the entries are read from the readdir ahead buffer. > Reviewed-on: https://review.gluster.org/16953 > Smoke: Gluster Build System <jenkins@build.gluster.org> > Reviewed-by: Raghavendra G <rgowdapp@redhat.com> > NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> > CentOS-regression: Gluster Build System <jenkins@build.gluster.org> > (cherry picked from commit 61f76f318faed395660f5bbcfe39616b39c158f0) Change-Id: I4f173a77b21ab9e98ae35e291a45b8fc0cde65bd BUG: 1439148 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: https://review.gluster.org/17001 Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* glusterd, readdir-ahead: Fix backward incompatibilityPoornima G2017-02-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Backport of https://review.gluster.org/#/c/16657/ Issue: Any opion is spcified in two places: In the options[] of xlator itself and glusterd-volume-set.c. The default value of this option can be specified in both the places. If its specified only in xlator then the volfile generated will not have the option and default value, it will be assigned during graph initialization. With patch [1] the option rda-request-size was changed from INT to SIZET type, and default was changed from 131072 to 128KB, but was specified only in the readdir-ahead.c. Thus with this patch alone the volfile entry for readdir-ahead looks like: volume patchy-readdir-ahead type performance/readdir-ahead subvolumes patchy-read-ahead end-volume With patch [2], the default of option rda-request-size was specified in glusterd-volume-set.c as well(as it was necessary fr parallel readdir). With this patch the readdir entry in the volfile will look like: volume patchy-readdir-ahead type performance/readdir-ahead option rda-cache-limit 10MB option rda-request-size 128KB option parallel-readdir off subvolumes patchy-read-ahead end-volume Now consider the server has both these patches and client doesn't. Server will generate a volfile with entry: The old clients which thought the option rda-request-size is of type INT will now recieve the value 128KB which it willn't understand, and hence fail the mount. The issue is seen only with the combination of [1] and [2]. Solution: Instead of specifying 128KB as default in glusterd we specify 131072 so that the old clients will interpret as INT and new ones as 128KB Credits: Raghavendra G > Reviewed-on: https://review.gluster.org/16657 > Smoke: Gluster Build System <jenkins@build.gluster.org> > NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> > CentOS-regression: Gluster Build System <jenkins@build.gluster.org> > Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com> > Reviewed-by: Raghavendra G <rgowdapp@redhat.com> > Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Change-Id: I0c269a5890957fd8a38e9a05bdec088645a6688a BUG: 1423412 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: https://review.gluster.org/16658 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
* readdir-ahead: Remove unnecessary loggingPoornima G2017-02-171-6/+0
| | | | | | | | | | | | | | | | | | | | dict_get_int can return < 0 when key is not found is a valid case. Hence no need to log. > Reviewed-on: https://review.gluster.org/16654 > NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> > CentOS-regression: Gluster Build System <jenkins@build.gluster.org> > Smoke: Gluster Build System <jenkins@build.gluster.org> > Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Change-Id: If0795b0f178adbb94b10efc563506993f7411962 BUG: 1423429 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: https://review.gluster.org/16659 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
* Readdir-ahead : Honour readdir-optimise option of dhtPoornima G2017-01-273-1/+20
| | | | | | | | | | | | | | | | | | | | | | | >Change-Id: I9c5e65b32e316e6a2fc7e1f5c79fce79386b78e2 >BUG: 1401812 >Signed-off-by: Poornima G <pgurusid@redhat.com> >Reviewed-on: https://review.gluster.org/16071 >Smoke: Gluster Build System <jenkins@build.gluster.org> >CentOS-regression: Gluster Build System <jenkins@build.gluster.org> >NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> >Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Change-Id: I9c5e65b32e316e6a2fc7e1f5c79fce79386b78e2 BUG: 1417027 Signed-off-by: Poornima G <pgurusid@redhat.com> (cherry picked from commit 7c6538f6c8f9a015663b4fc57c640a7c451c87f7) Reviewed-on: https://review.gluster.org/16461 Tested-by: Raghavendra G <rgowdapp@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
* readdir-ahead : Perform STACK_UNWIND outside of mutex locksPoornima G2017-01-091-48/+67
| | | | | | | | | | | | | | | | | | Currently STACK_UNWIND is performnd within ctx->lock. If readdir-ahead is loaded as a child of dht, then there can be scenarios where the function calling STACK_UNWIND becomes re-entrant. Its a good practice to not call STACK_WIND/UNWIND within local mutex's Change-Id: If4e869849d99ce233014a8aad7c4d5eef8dc2e98 BUG: 1401812 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: http://review.gluster.org/16068 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* readdir-ahead: Enhance EOD detection logicPoornima G2017-01-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Issue: Currently end of directory is identified on obtaining a readdirp_cbk with op_ret = 0 (i.e. 0 entries fetched in readdirp). Thus an extra readdirp is required for every directory just to identify EOD. Consider a case of listing large number of small directories. The readdirp fops required are doubled in that case. Solution: On reaching the EOD, posix sets the op_errno to ENOENT, hence along with looking for 'op_ret == 0' we also look for 'operrno == ENOENT' ehile checking for EOD condition Change-Id: I7a5b52e7b98f5dc236c387635fcc651dac0171b3 BUG: 1401812 Signed-off-by: Poornima G <pgurusid@redhat.com> Reviewed-on: http://review.gluster.org/16042 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Smoke: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* performance/readdir-ahead: limit cache sizeRaghavendra G2016-12-222-35/+85
| | | | | | | | | | | | | | | | This patch introduces a new option called "rda-cache-limit", which is the maximum value the entire readdir-ahead cache can grow into. Since, readdir-ahead holds a reference to inode through dentries, this patch also accounts memory stored by various xlators in inode contexts. Change-Id: I84cc0ca812f35e0f9041f8cc71effae53a9e7f99 BUG: 1356960 Signed-off-by: Raghavendra G <rgowdapp@redhat.com> Reviewed-on: http://review.gluster.org/16137 NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Poornima G <pgurusid@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
* build: out-of-tree builds generates files in the wrong directoryKaleb S KEITHLEY2016-09-181-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | And minor cleanup of a few of the Makefile.am files while we're at it. Rewrite the make rules to do what xdrgen does. Now we can get rid of xdrgen. Note 1. netbsd6's sed doesn't do -i. Why are we still running smoke tests on netbsd6 and not netbsd7? We barely support netbsd7 as it is. Note 2. Why is/was libgfxdr.so (.../rpc/xdr/src/...) linked with libglusterfs? A cut-and-paste mistake? It has no references to symbols in libglusterfs. Note3. "/#ifndef\|#define\|#endif/" (note the '\'s) is a _basic_ regex that matches the same lines as the _extended_ regex "/#(ifndef|define|endif)/". To match the extended regex sed needs to be run with -r on Linux; with -E on *BSD. However NetBSD's and FreeBSD's sed helpfully also provide -r for compatibility. Using a basic regex avoids having to use a kludge in order to run sed with the correct option on OS X. Note 4. Not copying the bit of xdrgen that inserts copyright/license boilerplate. AFAIK it's silly to pretend that machine generated files like these can be copyrighted or need license boilerplate. The XDR source files have their own copyright and license; and their copyrights are bound to be more up to date than old boilerplate inserted by a script. From what I've seen of other Open Source projects -- e.g. gcc and its C parser files generated by yacc and lex -- IIRC they don't bother to add copyright/license boilerplate to their generated files. It appears that it's a long-standing feature of make (SysV, BSD, gnu) for out-of-tree builds to helpfully pretend that the source files it can find in the VPATH "exist" as if they are in the $cwd. rpcgen doesn't work well in this situation and generates files with "bad" #include directives. E.g. if you `rpcgen ../../../../$srcdir/rpc/xdr/src/glusterfs3-xdr.x`, you get an #include directive in the generated .c file like this: ... #include "../../../../$srcdir/rpc/xdr/src/glusterfs3-xdr.h" ... which (obviously) results in compile errors on out-of-tree build because the (generated) header file doesn't exist at that location. Compared to `rpcgen ./glusterfs3-xdr.x` where you get: ... #include "glusterfs3-xdr.h" ... Which is what we need. We have to resort to some Stupid Make Tricks like the addition of various .PHONY targets to work around the VPATH "help". Warning: When doing an in-tree build, -I$(top_builddir)/rpc/xdr/... looks exactly like -I$(top_srcdir)/rpc/xdr/... Don't be fooled though. And don't delete the -I$(top_builddir)/rpc/xdr/... bits Change-Id: Iba6ab96b2d0a17c5a7e9f92233993b318858b62e BUG: 1330604 Signed-off-by: Kaleb S KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/14085 Tested-by: Niels de Vos <ndevos@redhat.com> Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* readdir-ahead: Prefetch xattrs needed by md-cachePrashanth Pai2016-05-102-7/+124
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Negative cache feature implementation in md-cache requires xattrs returned by posix to be intercepted for every call that can possibly return xattrs. This includes readdirp(). This is crucial to treat missing keys in cache as a case of negative entry (returns ENODATA) md-cache puts names of xattrs that it wants to cache in xdata and passes it down to posix which returns the specified xattrs in the callback. This is done in lookup() and readdirp(). Hence, a xattr that is cached can be invalidated during readdirp_cbk too. This is based on the assumption that readdirp() will always return all xattrs that md-cache is interested in. However, this is not the case when readdirp() call is served from readdir-ahead's cache. readdir-ahead xlator will pre-fetch dentries during opendir_cbk and readdirp. These internal readdirp() calls made by readdir-ahead xlator does not set xdata in it's requests. Hence, no xattrs are fetched and stored in it's internal cache. This causes metadata loss in gluster-swift. md-cache returns ENODATA during getxattr() call even though the xattr for that object exists on the brick. On receiving ENODATA, gluster-swift will create new metadata and do setxattr(). This results in loss of information stored in existing xattr. Fix: During opendir, md-cache will communicate to readdir-ahead asking it to store the names of xattrs it's interested in so that readdir-ahead can fetch those in all subsequent internal readdirp() calls issued by it. This stored names of xattrs is invalidated/updated on the next real readdirp() call issued by application. This readdirp() call will have xdata set correctly by md-cache xlator. BUG: 1333023 Change-Id: I32d46f93a99d4ec34c741f3c52b0646d141614f9 Reviewed-on: http://review.gluster.org/14214 Tested-by: Prashanth Pai <ppai@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Smoke: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* build: export minimum symbols from xlators for correct resolutionKaleb S KEITHLEY2015-12-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | Revisiting http://review.gluster.org/#/c/11814/, which unintentionally introduced warnings from libtool about the xlator .so names. According to [1], the -module option must appear in the Makefile.am file(s); if -module is defined in a macro, e.g. in configure(.ac), then libtool will not recognize that this is a module and will emit a warning. [1] http://www.gnu.org/software/automake/manual/automake.html#Libtool-Modules Change-Id: Ifa5f9327d18d139597791c305aa10cc4410fb078 BUG: 1248669 Signed-off-by: Kaleb S KEITHLEY <kkeithle@redhat.com> Reviewed-on: http://review.gluster.org/13003 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: soumya k <skoduri@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* build: export minimum symbols from xlators for correct resolutionKaleb S. KEITHLEY2015-09-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | We've been lucky that we haven't had any symbol collisions until now. Now we have a collision between the snapview-client's svc_lookup() and libntirpc's svc_lookup() with nfs-ganesha's FSAL_GLUSTER and libgfapi. As a short term solution all the snapview-client's FOP methods were changed to static scope. See http://review.gluster.org/11805. This works in snapview-client because all the FOP methods are defined in a single source file. This solution doesn't work for other xlators with FOP methods defined in multiple source files. To address this we link with libtool's '-export-symbols $symbol-file' (a wrapper around `ld --version-script ...` --- on linux anyway) and only export the minimum required symbols from the xlator sharedlib. N.B. the libtool man page says that the symbol file should be named foo.sym, thus the rename of *.exports to *.sym. While foo.exports worked, we will follow the documentation. Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com> BUG: 1248669 Change-Id: I1de68b3e3be58ae690d8bfb2168bfc019983627c Reviewed-on: http://review.gluster.org/11814 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: soumya k <skoduri@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* feature/performace: Fix broken buildKotresh HR2015-06-281-1/+1
| | | | | | | | | | | | Fix the build broken because of patch http://review.gluster.org/#/c/9822/ Change-Id: I0ee502c0fad5be87186c80ab4729036f52f85fa3 BUG: 1194640 Signed-off-by: Kotresh HR <khiremat@redhat.com> Reviewed-on: http://review.gluster.org/11451 Reviewed-by: Niels de Vos <ndevos@redhat.com> Tested-by: Niels de Vos <ndevos@redhat.com>
* Logging: Porting the performance translatorarao2015-06-272-8/+118
| | | | | | | | | | | | | logs to new logging framework. Change-Id: Ie6aaf8d30bd4457bb73c48e23e6b1dea27598644 BUG: 1194640 Signed-off-by: arao <arao@redhat.com> Reviewed-on: http://review.gluster.org/9822 Tested-by: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* build: do not #include "config.h" in each fileNiels de Vos2015-05-291-5/+0
| | | | | | | | | | | | | | | | | | 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 <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/10808 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* performance/readdir-ahead: indicate EOF for readdirpRaghavendra Bhat2014-12-171-2/+9
| | | | | | | | | | | | | | | | | | posix xlator sends op_errno as ENOENT and op_ret as 0, to indicate readdir has been completed. readdir-ahead should send that op_errno that it has saved in the fd context, when it serves the readdir requests. Otherwise some xlators sitting above performance xlators such as snapview-client, which checks for end of readdir operation by checking op_ret to 0 and op_errno to ENOENT will not be able to identify end of readdir. Change-Id: Ib0835136c61cb1e0d7df933226c479c7db703a71 BUG: 1174783 Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com> Reviewed-on: http://review.gluster.org/9283 Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* build: MacOSX Porting fixesHarshavardhana2014-04-241-4/+4
| | | | | | | | | | | | | | | | | | | | | git@forge.gluster.org:~schafdog/glusterfs-core/osx-glusterfs Working functionality on MacOSX - GlusterD (management daemon) - GlusterCLI (management cli) - GlusterFS FUSE (using OSXFUSE) - GlusterNFS (without NLM - issues with rpc.statd) Change-Id: I20193d3f8904388e47344e523b3787dbeab044ac BUG: 1089172 Signed-off-by: Harshavardhana <harsha@harshavardhana.net> Signed-off-by: Dennis Schafroth <dennis@schafroth.com> Tested-by: Harshavardhana <harsha@harshavardhana.net> Tested-by: Dennis Schafroth <dennis@schafroth.com> Reviewed-on: http://review.gluster.org/7503 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* build: do not create versioned <xlator>.so filesNiels de Vos2014-03-211-1/+1
| | | | | | | | | | | | | | | | | | There has been a misspelled option in the Makefile.am files. The option is called -avoid-version, and not -avoidversion. It is not trivial to provide a test-case for this. One way would be to check generated RPMs with a command like this (output should be empty): $ rpm -qlp *.rpm | grep -E '/xlator/.+.so.0' Change-Id: I2a6cc557eada4d098b73af5a254f8c75707543da BUG: 1078365 Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/7299 Reviewed-by: Lalatendu Mohanty <lmohanty@redhat.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* performance/readdir-ahead: introduce directory read-ahead translatorBrian Foster2013-09-045-0/+648
This is a translator to improve the performance of typical, sequential directory reads (i.e., ls). readdir-ahead begins preloading the contents of a directory on open and serves readdir requests from the preloaded content. readdir-ahead is currently implemented to only handle the single threaded directory read case. readdir-ahead is currently disabled by default. It can be enabled with the following command: gluster volume set <volname> readdir-ahead on The following are results of a getdents test on a single brick volume. Test info: - Single VM, gluster client/server. - Volume mounted with native client using --gid-timeout=2. - getdents on single directory with 100k 0-byte files. Test results: - !readdir-ahead read 3120080 bytes from offset 0 3 MiB, 4348 ops, 0:00:07.00 (416.590 KiB/sec and 594.4737 ops/sec) - readdir-ahead read 3120080 bytes from offset 0 3 MiB, 4348 ops, 0:00:03.00 (820.116 KiB/sec and 1170.3043 ops/sec) BUG: 980517 Change-Id: Ieceb9e1eb47d1d5b5af8da2bf03839537364653f Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-on: http://review.gluster.org/4519 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>