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* readdir-ahead: Prefetch xattrs needed by md-cachePrashanth Pai2016-05-112-7/+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. > 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> BUG: 1334700 Change-Id: I32d46f93a99d4ec34c741f3c52b0646d141614f9 (cherry picked from commit 0c73e7050c4d30ace0c39cc9b9634e9c1b448cfb) Reviewed-on: http://review.gluster.org/14282 Tested-by: Prashanth Pai <ppai@redhat.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Tested-by: Gluster Build System <jenkins@build.gluster.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> Smoke: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
* Logging: Porting the performance translatorarao2015-06-293-9/+119
| | | | | | | | | | | | | | | | logs to new logging framework > Change-Id: Ie6aaf8d30bd4457bb73c48e23e6b1dea27598644 > BUG: 1194640 > Signed-off-by: arao <arao@redhat.com> BUG: 1217722 Change-Id: I0856c43dbf8c0a1aa084d4478c9bdf3f41dfc0b8 Signed-off-by: arao <arao@redhat.com> Reviewed-on: http://review.gluster.org/11442 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>
* 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>
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