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| author | Jeff Darcy <jdarcy@redhat.com> | 2014-04-15 18:06:24 +0000 |
|---|---|---|
| committer | Vijay Bellur <vbellur@redhat.com> | 2014-04-16 10:37:34 -0700 |
| commit | d6ad57239d396f31ae0cd21e2e8e5db64aae5714 (patch) | |
| tree | 88bf8e50a2c47c91b95f9f8d3dd1aed526efe901 /doc/features | |
| parent | 686ee24a80c6ee7a5135aace8c2536f2afbcf367 (diff) | |
doc: add documentation for NUFA feature
Change-Id: I00f1c669d4ebc61f09c50f8de4c893907f6d75c2
BUG: 1086745
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/7489
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Tested-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'doc/features')
| -rw-r--r-- | doc/features/nufa.md | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/doc/features/nufa.md b/doc/features/nufa.md new file mode 100644 index 00000000000..03b8194b4c0 --- /dev/null +++ b/doc/features/nufa.md @@ -0,0 +1,20 @@ +# NUFA Translator + +The NUFA ("Non Uniform File Access") is a variant of the DHT ("Distributed Hash +Table") translator, intended for use with workloads that have a high locality +of reference. Instead of placing new files pseudo-randomly, it places them on +the same nodes where they are created so that future accesses can be made +locally. For replicated volumes, this means that one copy will be local and +others will be remote; the read-replica selection mechanisms will then favor +the local copy for reads. For non-replicated volumes, the only copy will be +local. + +## Interface + +Use of NUFA is controlled by a volume option, as follows. + + gluster volume set myvolume cluster.nufa on + +This will cause the NUFA translator to be used wherever the DHT translator +otherwise would be. The rest is all automatic. + |