---------------------------
1. Minor doc suggestion
---------------------------
http://wiki.basho.com/Configuration-Files.html
"""
# riak_kv_fs_backend
Data is stored in binary files on the filesystem
* riak_kv_fs_backendroot
Root directory where the files are stored (ex: /var/lib/riak/data)
"""
"riak_kv_fs_backendroot" should be "riak_kv_fs_backend_root"
Note: these docs correctly point that out:
http://doc.erlagner.org/riak_kv/riak_kv_fs_backend.html
-----------------------------------
2. Working example of multi backend
-----------------------------------
Following the previous thread on this, I was able to noodle out how to
make this work:
a) edit the app.config
++++++++++++++++++++++
user@erlang32:~/projects/riak/riak/rel/riak$ vim etc/app.config
42 %% Riak KV config
43 {riak_kv, [
44 %% Storage_backend specifies the Erlang module defining
the storage
45 %% mechanism that will be used on this node.
46 {storage_backend, riak_kv_multi_backend},
47 {multi_backend_default, <<"cache">>},
48 {multi_backend, [
49 {<<"bitcask">>, riak_kv_bitcask_backend, [
50 {data_root, "/var/riak/data/bitcask"}
51 ]},
52 {<<"filesystem">>, riak_kv_fs_backend, [
53 {riak_kv_fs_backend_root,
"/var/riak/data/filesystem"}
54 ]},
55 {<<"cache">>, riak_kv_cache_backend, [
56 {riak_kv_cache_backend_memory, 1024},
57 {riak_kv_cache_backend_ttl, 600},
58 {riak_kv_cache_backend_max_ttl, 3600}
59 ]}
60 ]},
b) try to persist data into the filestore backend
+++++++++++++++++++++++++++++++++++++++++++++++++
user@erlang32:~/projects/riak/riak/rel/riak$ ./erts-5.8.3/bin/erl -name
'riaktest@127.0.0.1' -setcookie riak
Erlang R14B02 (erts-5.8.3) [source] [rq:1] [async-threads:0]
[kernel-poll:false]
Eshell V5.8.3 (abort with ^G)
(riaktest@127.0.0.1)1> RiakNode = 'riak@127.0.0.1'.
'riak@127.0.0.1'
(riaktest@127.0.0.1)2> net_adm:ping(RiakNode).
pong
(riaktest@127.0.0.1)3> {ok, C} = riak:client_connect(RiakNode).
{ok,{riak_client,'riak@127.0.0.1',<<3,169,233,111>>}}
(riaktest@127.0.0.1)4> C:set_bucket(<<"Blobs">>, [{backend,
<<"filesystem">>}]).
ok
(riaktest@127.0.0.1)5> Blob=riak_object:new(<<"Blobs">>, <<"file1">>,
[<<"data blob 1">>]).
{r_object,<<"Blobs">>,<<"file1">>,
[{r_content,{dict,0,16,16,8,80,48,
{[],[],[],[],[],[],[],[],[],[],[],[],[],[],...},
{{[],[],[],[],[],[],[],[],[],[],[],[],...}}},
[<<"data blob 1">>]}],
[],
{dict,1,16,16,8,80,48,
{[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],...},
{{[],[],[],[],[],[],[],[],[],[],[],[],[],...}}},
undefined}
(riaktest@127.0.0.1)6> C:put(Blob, 1).
ok
c) retrieve the persisted data
++++++++++++++++++++++++++++++
(riaktest@127.0.0.1)7> {ok, Retrieved} = C:get(<<"Blobs">>, <<"file1">>, 1).
{ok,{r_object,<<"Blobs">>,<<"file1">>,
[{r_content,{dict,2,16,16,8,80,48,
{[],[],[],[],[],[],[],[],[],[],[],[],...},
{{[],[],[],[],[],[],[],[],[],[],...}}},
[<<"data blob 1">>]}],
[{<<3,169,233,111>>,{1,63472109206}}],
{dict,1,16,16,8,80,48,
{[],[],[],[],[],[],[],[],[],[],[],[],[],...},
{{[],[],[],[],[],[],[],[],[],[],[],...}}},
undefined}}
(riaktest@127.0.0.1)9> riak_object:get_value(Retrieved).
[<<"data blob 1">>]
Hope that helps.
-Todd
_______________________________________________
riak-users mailing list
riak-users@lists.basho.com
http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
