features/cloudsync: Make plugins configurable

This patch brings the configuration option for plugins.

For new plugins, an entry has to be created in to cs_plugin structure e.g.
struct cs_plugin plugins[] = {
        {
          .name = "amazons3",
          .library = "libamazons3.so",
          .description = "amazon s3 store."
        },

        {.name = NULL},
};

Library field describes the name of the shared library for the plugin.

To configure plugin type "feature.cloudsync-storetype" option need
to be set to the remote-store type. e.g.

gluster volume set VOLNAME cloudsync-storetype amazons3. This should be same
as the ".name" field in cs_plugin structure.

cs_init will pick this up in run time to load the plugin.

Change-Id: I2cec10b206f71ac4e71d472631a3a5badf278b59
fixes: bz#1576842
Signed-off-by: Susant Palai <spalai@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-set.c b/xlators/mgmt/glusterd/src/glusterd-volume-set.c
index 0f4df92f07d..4fbc45d7cb3 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volume-set.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volume-set.c
@@ -3821,6 +3821,11 @@ struct volopt_map_entry glusterd_volopt_map[] = {
           .description = "enable/disable utime translator on the volume.",
           .flags      = VOLOPT_FLAG_CLIENT_OPT | VOLOPT_FLAG_XLATOR_OPT
         },
+        { .key        = "feature.cloudsync-storetype",
+          .voltype    = "features/cloudsync",
+          .op_version = GD_OP_VERSION_4_1_0,
+          .flags      = VOLOPT_FLAG_CLIENT_OPT
+        },
         { .key         = NULL
         }
 };