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* tests: Backport all changes to tests dirRaghavendra Talur2016-05-041-3/+3
| | | | | | | | | | | | | | | Test framework should be the same on all the branches. This is a copy of all the files under tests dir from master branch. New tests in master have not been backported, but changes to existing tests have been. Change-Id: I75747c525aabbd9247473dd29b3a0e7a7d93c827 BUG: 1316533 Signed-off-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-on: http://review.gluster.org/13683 Smoke: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
* dht: Add lookup-optimize configuration option for DHTShyam2015-06-051-1/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently with commit 4eaaf5 a mixed version cluster would have issues if lookup-uhashed is set to auto, as older clients would fail to validate the layouts if newer clients (i.e 3.7 or upwards) create directories. Also, in a mixed version cluster rebalance daemon would set commit hash for some subvolumes and not for the others. This commit fixes this problem by moving the enabling of the functionality introduced in the above mentioned commit to a new dht option. This option also has a op_version of 3_7_1 thereby preventing it from being set in a mixed version cluster. It brings in the following changes, - Option can be set only if min version of the cluster is 3.7.1 or more - Rebalance and mkdir update the layout with the commit hashes only if this option is set, hence ensuring rebalance works in a mixed version cluster, and also directories created by newer clients do not cause layout errors when read by older clients - This option also supersedes lookup-unhased, to enable the optimization for lookups more deterministic and not conflict with lookup-unhashed settings. Option added is cluster.lookup-optimize, which is a boolean. Usage: # gluster volume set VOLNAME cluster.lookup-optimize on Change-Id: Ifd1d4ce3f6438fcbcd60ffbfdbfb647355ea1ae0 BUG: 1225940 Signed-off-by: Shyam <srangana@redhat.com> Reviewed-on: http://review.gluster.org/10976 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: N Balachandran <nbalacha@redhat.com> Reviewed-by: Raghavendra G <rgowdapp@redhat.com> Tested-by: Raghavendra G <rgowdapp@redhat.com>
* dht: make lookup-unhashed=auto do something actually usefulJeff Darcy2015-05-091-0/+99
The key concept here is to determine whether a directory is "clean" by comparing its last-known-good topology to the current one for the volume. These are stored as "commit hashes" on the directory and the volume root respectively. The volume's commit hash changes whenever a brick is added or removed, and a fix-layout is done. A directory's commit hash changes only when a full rebalance (not just fix-layout) is done on it. If all bricks are present and have a directory commit hash that matches the volume commit hash, then we can assume that every file is in its "proper" place. Therefore, if we look for a file in that proper place and don't find it, we can assume it's not on any other subvolume and *safely* skip the global (broadcast to all) lookup. Change-Id: Id6ce4593ba1f7daffa74cfab591cb45960629ae3 BUG: 1220064 Reviewed-on-master: http://review.gluster.org/#/c/7702/ Signed-off-by: Jeff Darcy <jdarcy@redhat.com> Signed-off-by: Shyam <srangana@redhat.com> Reviewed-on: http://review.gluster.org/10729 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>