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| author | N Balachandran <nbalacha@redhat.com> | 2017-02-01 09:59:05 +0530 |
|---|---|---|
| committer | Shyamsundar Ranganathan <srangana@redhat.com> | 2017-02-01 13:40:07 -0500 |
| commit | 80b04666ec7019e132f76f734a88559457702f1b (patch) | |
| tree | 8f831f9879ed533b40eb09fd308be6bf188fcf26 /doc/release-notes | |
| parent | c5c9d5ea4950a636692542307ccdd5f98e0088df (diff) | |
Update release notes for rebalance estimation
Change-Id: If60f095b38c027e8f8a09949e5faa8831f9102db
BUG: 1417735
Signed-off-by: N Balachandran <nbalacha@redhat.com>
Reviewed-on: https://review.gluster.org/16497
Tested-by: Shyamsundar Ranganathan <srangana@redhat.com>
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>
Diffstat (limited to 'doc/release-notes')
| -rw-r--r-- | doc/release-notes/3.10.0.md | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/doc/release-notes/3.10.0.md b/doc/release-notes/3.10.0.md index 2facc0cf3bf..03e65dcfb7f 100644 --- a/doc/release-notes/3.10.0.md +++ b/doc/release-notes/3.10.0.md @@ -54,10 +54,35 @@ the `gluster volume get` command on the newly introduced global option, ### Support for rebalance time to completion estimation *Notes for users:* +Users can now see approximately how much time the rebalance +operation will take to complete across all nodes. + +The estimated time left for rebalance to complete is displayed +as part of the rebalance status. Use the command: + +```bash +# gluster volume rebalance VOLNAME status +``` *Limitations:* +The rebalance process calculates the time left based on the rate +at while files are processed on the node and the total number of files +on the brick which is determined using statfs. The limitations of this +are: + + * A single fs partitiion must host only one brick. Multiple bricks on +the same fs partition will cause the statfs results to be invalid. + + * The estimates are dynamic and are recalculated every time the rebalance status +command is invoked.The estimates become more accurate over time so short running +rebalance operations may not benefit. + *Known Issues:* +As glusterfs does not stored the number of files on the brick, we use statfs to +guess the number. The .glusterfs directory contents can significantly skew this +number and affect the calculated estimates. + ### Separation of tier as its own service *Notes for users:* |