glusterd / afr : Enable auto heal when replica count increases

In replicate volumes, when a brick is added to a replicate
group, heal to the new brick should be triggered.
Also, the new brick should not be considered as source for
healing till it is up to date.

Previously, extended attributes had to be set manually on
the bricks for this to happen. This patch is part 1 patch
to automate this process.

Change-Id: I29958448618372bfde23bf1dac5dd23dba1ad98f
BUG: 1276203
Signed-off-by: Anuradha Talur <atalur@redhat.com>
Reviewed-on: http://review.gluster.org/12451
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c
index cc599846bb9..b61c056507b 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volgen.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c
@@ -5451,6 +5451,58 @@ enumerate_transport_reqs (gf_transport_type type, char **types)
 }
 
 int
+generate_dummy_client_volfiles (glusterd_volinfo_t *volinfo)
+{
+        int                i                  = 0;
+        int                ret                = -1;
+        char               filepath[PATH_MAX] = {0,};
+        char               *types[]           = {NULL, NULL, NULL};
+        dict_t             *dict              = NULL;
+        xlator_t           *this              = NULL;
+        gf_transport_type  type               = GF_TRANSPORT_TCP;
+
+        this = THIS;
+
+        enumerate_transport_reqs (volinfo->transport_type, types);
+        dict = dict_new ();
+        if (!dict)
+                goto out;
+        for (i = 0; types[i]; i++) {
+                memset (filepath, 0, sizeof (filepath));
+                ret = dict_set_str (dict, "client-transport-type", types[i]);
+                if (ret)
+                        goto out;
+                type = transport_str_to_type (types[i]);
+
+                ret = dict_set_uint32 (dict, "trusted-client", GF_CLIENT_OTHER);
+                if (ret)
+                        goto out;
+
+                ret = glusterd_get_dummy_client_filepath (filepath,
+                                                          volinfo, type);
+                if (ret) {
+                        gf_msg (this->name, GF_LOG_ERROR, EINVAL,
+                                GD_MSG_INVALID_ENTRY,
+                                "Received invalid transport-type.");
+                        goto out;
+                }
+
+                ret = generate_single_transport_client_volfile (volinfo,
+                                                                filepath,
+                                                                dict);
+                if (ret)
+                        goto out;
+        }
+
+out:
+        if (dict)
+                dict_unref (dict);
+
+        gf_msg_trace ("glusterd", 0, "Returning %d", ret);
+        return ret;
+}
+
+int
 generate_client_volfiles (glusterd_volinfo_t *volinfo,
                           glusterd_client_type_t client_type)
 {