diff options
| author | Jeff Darcy <jdarcy@redhat.com> | 2014-04-15 18:06:24 +0000 |
|---|---|---|
| committer | Vijay Bellur <vbellur@redhat.com> | 2014-04-16 06:37:12 -0700 |
| commit | 1341dd0683aefd96496e44dfb8f15cb612ff7646 (patch) | |
| tree | 30ff2643f9e9ac65734573f700cb1dbc4f8a4fd5 /doc/features/nufa.md | |
| parent | 983c05e0da68fe65a9d028df0ec04d2271e9a4d3 (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/7490
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Reviewed-by: Lalatendu Mohanty <lmohanty@redhat.com>
Reviewed-by: Humble Devassy Chirammal <humble.devassy@gmail.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Diffstat (limited to 'doc/features/nufa.md')
| -rw-r--r-- | doc/features/nufa.md | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/doc/features/nufa.md b/doc/features/nufa.md new file mode 100644 index 00000000000..342acafb711 --- /dev/null +++ b/doc/features/nufa.md @@ -0,0 +1,19 @@ +# 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. |