cli/glusterd: CLI interface for BitRot detection

* BitRot enable/disable CLI per volume
* Volfile generation for Scrubber
* Relevant glusterd infrastructure

Change-Id: I1212af63f93ecc52b22ee6da920e1664f66a1e39
BUG: 1170075
Original-Author: Raghavendra Bhat <raghavendra@redhat.com>
Original-Author: Venky Shankar <vshankar@redhat.com>
Original-Author: Gaurav Kumar Garg <ggarg@redhat.com>
Original-Author: Anand Nekkunti <anekkunt@redhat.com>
Reviewed-on: http://review.gluster.org/9986
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

1 files changed, 119 insertions, 0 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-scrub-svc.c b/xlators/mgmt/glusterd/src/glusterd-scrub-svc.c
new file mode 100644
index 00000000000..bd1ed390f46
--- /dev/null
+++ b/xlators/mgmt/glusterd/src/glusterd-scrub-svc.c
@@ -0,0 +1,119 @@
+/*
+  Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com>
+  This file is part of GlusterFS.
+
+  This file is licensed to you under your choice of the GNU Lesser
+  General Public License, version 3 or any later version (LGPLv3 or
+  later), or the GNU General Public License, version 2 (GPLv2), in all
+  cases as published by the Free Software Foundation.
+*/
+
+#include "globals.h"
+#include "run.h"
+#include "glusterd.h"
+#include "glusterd-utils.h"
+#include "glusterd-volgen.h"
+#include "glusterd-scrub-svc.h"
+
+char *scrub_svc_name = "scrub";
+
+int
+glusterd_scrubsvc_init (glusterd_svc_t *svc)
+{
+        return glusterd_svc_init (svc, scrub_svc_name,
+                                  glusterd_scrubsvc_manager,
+                                  glusterd_scrubsvc_start,
+                                  glusterd_scrubsvc_stop);
+}
+
+static int
+glusterd_scrubsvc_create_volfile ()
+{
+        char              filepath[PATH_MAX] = {0,};
+        int               ret                = -1;
+        glusterd_conf_t   *conf              = NULL;
+        dict_t            *mod_dict          = NULL;
+        xlator_t          *this              = NULL;
+
+        this = THIS;
+        conf = this->private;
+        GF_ASSERT (conf);
+
+
+        mod_dict = dict_new ();
+        if (!mod_dict) {
+                gf_log (this->name, GF_LOG_ERROR, "failed to allocate new "
+                        "dict");
+                goto out;
+        }
+
+        ret = dict_set_uint32 (mod_dict, "trusted-client", GF_CLIENT_TRUSTED);
+        if (ret)
+                goto free_dict;
+
+        glusterd_svc_build_volfile_path (scrub_svc_name, conf->workdir,
+                                         filepath, sizeof (filepath));
+
+        ret = glusterd_create_global_volfile (build_scrub_graph,
+                                              filepath, mod_dict);
+        if (ret) {
+                gf_log (this->name, GF_LOG_ERROR, "Failed to create volfile");
+                goto free_dict;
+        }
+
+free_dict:
+        dict_unref (mod_dict);
+out:
+        gf_log (this->name, GF_LOG_DEBUG, "Returning %d", ret);
+
+        return ret;
+}
+
+int
+glusterd_scrubsvc_manager (glusterd_svc_t *svc, void *data, int flags)
+{
+        int          ret    = -EINVAL;
+
+        if (glusterd_all_volumes_with_bitrot_stopped ()) {
+                ret = svc->stop (svc, SIGTERM);
+        } else {
+                ret = glusterd_scrubsvc_create_volfile ();
+                if (ret)
+                        goto out;
+
+                ret = svc->stop (svc, SIGKILL);
+                if (ret)
+                        goto out;
+
+                ret = svc->start (svc, flags);
+                if (ret)
+                        goto out;
+
+                ret = glusterd_conn_connect (&(svc->conn));
+                if (ret)
+                        goto out;
+        }
+
+out:
+        gf_log (THIS->name, GF_LOG_DEBUG, "Returning %d", ret);
+
+        return ret;
+}
+
+int
+glusterd_scrubsvc_start (glusterd_svc_t *svc, int flags)
+{
+        return glusterd_svc_start (svc, flags, NULL);
+}
+
+int
+glusterd_scrubsvc_stop (glusterd_svc_t *svc, int sig)
+{
+        return glusterd_svc_stop (svc, sig);
+}
+
+int
+glusterd_scrubsvc_reconfigure ()
+{
+        return glusterd_svc_reconfigure (glusterd_scrubsvc_create_volfile);
+}