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* cli/tiering: Enhance cli output for tieringMohammed Rafi KC2015-05-081-1/+1
| | | | | | | | | | | | | | Fix for handling cli output for attach-tier and detach-tier Change-Id: I4d17f4b09612754fe1b8cec6c2e14927029b9678 BUG: 1211562 Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com> Reviewed-on: http://review.gluster.org/10284 Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* Tests: use a portable way to flush kernel cacheEmmanuel Dreyfus2015-05-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Linux, kernel cache can be flushed using echo 3 > /proc/sys/vm/drop_caches This non-portable approach can be replaced by an on-purpose failed attempt to unmount: if the mount point is the current directory and umount is called, the kernel will flush inodes until it realize it cannot complete the operation because root of filesystem is busy: ( cd $M0 ; umount $M0 ) Unfortunately this does not flush everything. Entries may still be present in the kenrel FUSE cache. Using $GFS to mount the filesystem ensure --entry-timeout=0 and clears this problem. Some stall information may also remain in glusterfs caches, and that may have to be adressed by appropriate volume option. For instance tests/bugs/rpc/bug-954057.t needs to disable performance.stat-prefetch. Qtherwise, root's new credentials are not evaluated after root-quash is enabled. The test could also be done with performance.stat-prefetch enabled using various tricks: copying the file to read, creating a hard link on it, or just waiting long enough for metadata cache to expire. BUG: 1129939 Change-Id: I54929e899d55c04dcd9d947809133549f01fd0e1 Signed-off-by: Emmanuel Dreyfus <manu@netbsd.org> Reviewed-on: http://review.gluster.org/10411 Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* tiering: Send both attach-tier and tier-start togetherMohammed Rafi KC2015-05-051-8/+10
| | | | | | | | | | | | After attaching tier, we have to start tier rebalance process. This patch is to trigger tier start along with attch-tier. Change-Id: I39380f95123f0087a82213ef263f9f33adcc5adc BUG: 1214222 Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com> Reviewed-on: http://review.gluster.org/10363 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Dan Lambright <dlambrig@redhat.com>
* tiering/cli: Check replica count and bricks are proper or notMohammed Rafi KC2015-05-041-1/+2
| | | | | | | | | | | | | | Right now, attach-tier calls parsing function for add-brick. Add-brick does not have any check for brick count and replca count compatibility. Change-Id: I44ec13eadffc003a9ebf8c4eb0193df559933a68 BUG: 1215122 Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com> Reviewed-on: http://review.gluster.org/10428 Reviewed-by: Dan Lambright <dlambrig@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* glusterd: support for tier volumes 'detach start' and 'detach commit'Dan Lambright2015-04-221-10/+12
| | | | | | | | | | | | | | | | | | | | | These commands work in a manner analagous to rebalancing when removing a brick. The existing migration daemon detects "detach start" and switches to moving data off the hot tier. While in this state all lookups are directed to the cold tier. gluster v detach-tier <vol> start gluster v detach-tier <vol> commit The status and stop cli commands shall be submitted separately. Change-Id: I24fda5cc3ba74f5fb8aa9a3234ad51f18b80a8a0 BUG: 1205540 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Signed-off-by: root <root@localhost.localdomain> Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/10108 Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Tested-by: NetBSD Build System
* glusterd: Support distributed replicated volumes on hot tierDan Lambright2015-04-081-9/+13
| | | | | | | | | | | | | | We did not set up the graph properly for hot tiers with replicated subvolumes. Also add check that the file has not already been moved by another replicated brick on the same node. Change-Id: I9adef565ab60f6774810962d912168b77a6032fa BUG: 1206517 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/10054 Reviewed-by: Joseph Fernandes <josferna@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
* cluster/dht: fix tier.c problems found prior to feature freezeDan Lambright2015-04-061-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch resolves tiering translator issues taken from the list in bug 1203776. These issues have been selected to be fixed first. The rest will be fixed in a subsequent patch (or are not a problem). 3. Replace hardcoded #defines of promote/demote file names 6. Use loc_wipe() in migrate_using_query_file() 9. Only promote/demote files on the same node on which they reside. 14. Replace calloc with GF_CALLOC in tier.c and ensure freeing done properly. 15. Handle if parse_query_str fails 22. Only load gfdb library on server side, remove SQL references from client. Change-Id: I6563b11e58ab2e4c6b1ce44db755781ad6d930fb BUG: 1203776 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/9987 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: N Balachandran <nbalacha@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* cluster/dht: Fix spurious failure in tier test.Dan Lambright2015-03-231-2/+11
| | | | | | | | | | | | Need to wait for a few seconds for rebalancing to complete before stopping volume. Change-Id: Ib81c02645240e7d74ebfb3e31ccbc612fc77b119 BUG: 1194753 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/9966 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
* cluster/dht: Add tier translator.Dan Lambright2015-03-211-0/+116
The tier translator shares most of DHT's code. It differs in how subvolumes are chosen for I/Os, and how file migration (cache promotion and demotion) is managed. That different functionality is split to either DHT or tier logic according to the "tier_methods" structure. A cache promotion and demotion thread is created in a manner similar to the rebalance daemon. The thread operates a timing wheel which periodically checks for promotion and demotion candidates (files). Candidates are queued and then migrated. Candidates must exist on the same node as the daemon and meet other critera per caching policies. This patch has two authors (Dan Lambright and Joseph Fernandes). Dan did the DHT changes and Joe wrote the cache policies. The fix depends on DHT readidr changes and the database library which have been submitted separately. Header files in libglusterfs/src/gfdb should be reviewed in patch 9683. For more background and design see the feature page [1]. [1] http://www.gluster.org/community/documentation/index.php/Features/data-classification Change-Id: Icc26c517ccecf5c42aef039f5b9c6f7afe83e46c BUG: 1194753 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/9724 Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Vijay Bellur <vbellur@redhat.com>
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