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| author | Pranith Kumar K <pkarampu@redhat.com> | 2017-05-26 15:30:49 +0530 |
|---|---|---|
| committer | Shyamsundar Ranganathan <srangana@redhat.com> | 2017-05-26 16:30:47 +0000 |
| commit | 9dd15e9356c2fb32b73168b43ca2cb7d3263103f (patch) | |
| tree | 615d741b8ffcffeaed03788a2160c5a0107f6030 | |
| parent | 093a22a3579bb95e79241e47090c2718801844f7 (diff) | |
Update release notes of 3.11 for halo replication
Updates: #199
Change-Id: I834543d7e71d9c3d84b595f7446a3e2c74f07d97
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: https://review.gluster.org/17396
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: Shyamsundar Ranganathan <srangana@redhat.com>
| -rw-r--r-- | doc/release-notes/3.11.0.md | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/doc/release-notes/3.11.0.md b/doc/release-notes/3.11.0.md index 576a7f51565..2811d06ee46 100644 --- a/doc/release-notes/3.11.0.md +++ b/doc/release-notes/3.11.0.md @@ -136,10 +136,38 @@ None. ### Halo Replication feature in AFR has been introduced *Notes for users:* +Halo Geo-replication is a feature which allows Gluster or NFS clients to write +locally to their region (as defined by a latency "halo" or threshold if you +like), and have their writes asynchronously propagate from their origin to the +rest of the cluster. Clients can also write synchronously to the cluster +simply by specifying a halo-latency which is very large (e.g. 10seconds) which +will include all bricks. +To enable halo feature execute the following commands: +```bash +# gluster volume set cluster.halo-enabled yes +``` + +You may have to set the following following options to change defaults. +`cluster.halo-shd-latency`: The threshold below which self-heal daemons will +consider children (bricks) connected. + +`cluster.halo-nfsd-latency`: The threshold below which NFS daemons will consider +children (bricks) connected. + +`cluster.halo-latency`: The threshold below which all other clients will +consider children (bricks) connected. + +`cluster.halo-min-replicas`: The minimum number of replicas which are to +be enforced regardless of latency specified in the above 3 options. +If the number of children falls below this threshold the next +best (chosen by latency) shall be swapped in. + *Limitations:* +None *Known Issues:* +None ### FALLOCATE support with EC Notes for users: |