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| -rw-r--r-- | doc/release-notes/3.11.0.md | 28 |
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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: |