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-rw-r--r--xlators/mgmt/glusterd/src/glusterd-volgen.c4065
1 files changed, 4065 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c
new file mode 100644
index 000000000..6f3c69e7d
--- /dev/null
+++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c
@@ -0,0 +1,4065 @@
+/*
+ Copyright (c) 2010-2012 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.
+*/
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include <fnmatch.h>
+#include <sys/wait.h>
+#include <dlfcn.h>
+
+#if (HAVE_LIB_XML)
+#include <libxml/encoding.h>
+#include <libxml/xmlwriter.h>
+#endif
+
+#include "xlator.h"
+#include "glusterd.h"
+#include "defaults.h"
+#include "logging.h"
+#include "dict.h"
+#include "graph-utils.h"
+#include "glusterd-store.h"
+#include "glusterd-hooks.h"
+#include "trie.h"
+#include "glusterd-mem-types.h"
+#include "cli1-xdr.h"
+#include "glusterd-volgen.h"
+#include "glusterd-op-sm.h"
+#include "glusterd-utils.h"
+#include "run.h"
+#include "options.h"
+
+extern struct volopt_map_entry glusterd_volopt_map[];
+
+/*********************************************
+ *
+ * xlator generation / graph manipulation API
+ *
+ *********************************************/
+
+
+struct volgen_graph {
+ char **errstr;
+ glusterfs_graph_t graph;
+};
+typedef struct volgen_graph volgen_graph_t;
+
+static void
+set_graph_errstr (volgen_graph_t *graph, const char *str)
+{
+ if (!graph->errstr)
+ return;
+
+ *graph->errstr = gf_strdup (str);
+}
+
+static xlator_t *
+xlator_instantiate_va (const char *type, const char *format, va_list arg)
+{
+ xlator_t *xl = NULL;
+ char *volname = NULL;
+ int ret = 0;
+
+ ret = gf_vasprintf (&volname, format, arg);
+ if (ret < 0) {
+ volname = NULL;
+
+ goto error;
+ }
+
+ xl = GF_CALLOC (1, sizeof (*xl), gf_common_mt_xlator_t);
+ if (!xl)
+ goto error;
+ ret = xlator_set_type_virtual (xl, type);
+ if (ret)
+ goto error;
+ xl->options = get_new_dict();
+ if (!xl->options)
+ goto error;
+ xl->name = volname;
+ INIT_LIST_HEAD (&xl->volume_options);
+
+ xl->ctx = THIS->ctx;
+
+ return xl;
+
+ error:
+ gf_log ("", GF_LOG_ERROR, "creating xlator of type %s failed",
+ type);
+ GF_FREE (volname);
+ if (xl)
+ xlator_destroy (xl);
+
+ return NULL;
+}
+
+#ifdef __not_used_as_of_now_
+static xlator_t *
+xlator_instantiate (const char *type, const char *format, ...)
+{
+ va_list arg;
+ xlator_t *xl;
+
+ va_start (arg, format);
+ xl = xlator_instantiate_va (type, format, arg);
+ va_end (arg);
+
+ return xl;
+}
+#endif
+
+static int
+volgen_xlator_link (xlator_t *pxl, xlator_t *cxl)
+{
+ int ret = 0;
+
+ ret = glusterfs_xlator_link (pxl, cxl);
+ if (ret == -1) {
+ gf_log ("", GF_LOG_ERROR,
+ "Out of memory, cannot link xlators %s <- %s",
+ pxl->name, cxl->name);
+ }
+
+ return ret;
+}
+
+static int
+volgen_graph_link (volgen_graph_t *graph, xlator_t *xl)
+{
+ int ret = 0;
+
+ /* no need to care about graph->top here */
+ if (graph->graph.first)
+ ret = volgen_xlator_link (xl, graph->graph.first);
+ if (ret == -1) {
+ gf_log ("", GF_LOG_ERROR, "failed to add graph entry %s",
+ xl->name);
+
+ return -1;
+ }
+
+ return 0;
+}
+
+static xlator_t *
+volgen_graph_add_as (volgen_graph_t *graph, const char *type,
+ const char *format, ...)
+{
+ va_list arg;
+ xlator_t *xl = NULL;
+
+ va_start (arg, format);
+ xl = xlator_instantiate_va (type, format, arg);
+ va_end (arg);
+
+ if (!xl)
+ return NULL;
+
+ if (volgen_graph_link (graph, xl)) {
+ xlator_destroy (xl);
+
+ return NULL;
+ } else
+ glusterfs_graph_set_first (&graph->graph, xl);
+
+ return xl;
+}
+
+static xlator_t *
+volgen_graph_add_nolink (volgen_graph_t *graph, const char *type,
+ const char *format, ...)
+{
+ va_list arg;
+ xlator_t *xl = NULL;
+
+ va_start (arg, format);
+ xl = xlator_instantiate_va (type, format, arg);
+ va_end (arg);
+
+ if (!xl)
+ return NULL;
+
+ glusterfs_graph_set_first (&graph->graph, xl);
+
+ return xl;
+}
+
+static xlator_t *
+volgen_graph_add (volgen_graph_t *graph, char *type, char *volname)
+{
+ char *shorttype = NULL;
+
+ shorttype = strrchr (type, '/');
+ GF_ASSERT (shorttype);
+ shorttype++;
+ GF_ASSERT (*shorttype);
+
+ return volgen_graph_add_as (graph, type, "%s-%s", volname, shorttype);
+}
+
+/* XXX Seems there is no such generic routine?
+ * Maybe should put to xlator.c ??
+ */
+static int
+xlator_set_option (xlator_t *xl, char *key, char *value)
+{
+ char *dval = NULL;
+
+ dval = gf_strdup (value);
+ if (!dval) {
+ gf_log ("", GF_LOG_ERROR,
+ "failed to set xlator opt: %s[%s] = %s",
+ xl->name, key, value);
+
+ return -1;
+ }
+
+ return dict_set_dynstr (xl->options, key, dval);
+}
+
+static int
+xlator_get_option (xlator_t *xl, char *key, char **value)
+{
+ GF_ASSERT (xl);
+ return dict_get_str (xl->options, key, value);
+}
+
+static inline xlator_t *
+first_of (volgen_graph_t *graph)
+{
+ return (xlator_t *)graph->graph.first;
+}
+
+
+
+
+/**************************
+ *
+ * Trie glue
+ *
+ *************************/
+
+
+static int
+volopt_selector (int lvl, char **patt, void *param,
+ int (*optcbk)(char *word, void *param))
+{
+ struct volopt_map_entry *vme = NULL;
+ char *w = NULL;
+ int i = 0;
+ int len = 0;
+ int ret = 0;
+ char *dot = NULL;
+
+ for (vme = glusterd_volopt_map; vme->key; vme++) {
+ w = vme->key;
+
+ for (i = 0; i < lvl; i++) {
+ if (patt[i]) {
+ w = strtail (w, patt[i]);
+ GF_ASSERT (!w || *w);
+ if (!w || *w != '.')
+ goto next;
+ } else {
+ w = strchr (w, '.');
+ GF_ASSERT (w);
+ }
+ w++;
+ }
+
+ dot = strchr (w, '.');
+ if (dot) {
+ len = dot - w;
+ w = gf_strdup (w);
+ if (!w)
+ return -1;
+ w[len] = '\0';
+ }
+ ret = optcbk (w, param);
+ if (dot)
+ GF_FREE (w);
+ if (ret)
+ return -1;
+ next:
+ continue;
+ }
+
+ return 0;
+}
+
+static int
+volopt_trie_cbk (char *word, void *param)
+{
+ return trie_add ((trie_t *)param, word);
+}
+
+static int
+process_nodevec (struct trienodevec *nodevec, char **hint)
+{
+ int ret = 0;
+ char *hint1 = NULL;
+ char *hint2 = NULL;
+ char *hintinfx = "";
+ trienode_t **nodes = nodevec->nodes;
+
+ if (!nodes[0]) {
+ *hint = NULL;
+ return 0;
+ }
+
+#if 0
+ /* Limit as in git */
+ if (trienode_get_dist (nodes[0]) >= 6) {
+ *hint = NULL;
+ return 0;
+ }
+#endif
+
+ if (trienode_get_word (nodes[0], &hint1))
+ return -1;
+
+ if (nodevec->cnt < 2 || !nodes[1]) {
+ *hint = hint1;
+ return 0;
+ }
+
+ if (trienode_get_word (nodes[1], &hint2))
+ return -1;
+
+ if (*hint)
+ hintinfx = *hint;
+ ret = gf_asprintf (hint, "%s or %s%s", hint1, hintinfx, hint2);
+ if (ret > 0)
+ ret = 0;
+ return ret;
+}
+
+static int
+volopt_trie_section (int lvl, char **patt, char *word, char **hint, int hints)
+{
+ trienode_t *nodes[] = { NULL, NULL };
+ struct trienodevec nodevec = { nodes, 2};
+ trie_t *trie = NULL;
+ int ret = 0;
+
+ trie = trie_new ();
+ if (!trie)
+ return -1;
+
+ if (volopt_selector (lvl, patt, trie, &volopt_trie_cbk)) {
+ trie_destroy (trie);
+
+ return -1;
+ }
+
+ GF_ASSERT (hints <= 2);
+ nodevec.cnt = hints;
+ ret = trie_measure_vec (trie, word, &nodevec);
+ if (ret || !nodevec.nodes[0])
+ trie_destroy (trie);
+
+ ret = process_nodevec (&nodevec, hint);
+ trie_destroy (trie);
+
+ return ret;
+}
+
+static int
+volopt_trie (char *key, char **hint)
+{
+ char *patt[] = { NULL };
+ char *fullhint = NULL;
+ char *dot = NULL;
+ char *dom = NULL;
+ int len = 0;
+ int ret = 0;
+
+ *hint = NULL;
+
+ dot = strchr (key, '.');
+ if (!dot)
+ return volopt_trie_section (1, patt, key, hint, 2);
+
+ len = dot - key;
+ dom = gf_strdup (key);
+ if (!dom)
+ return -1;
+ dom[len] = '\0';
+
+ ret = volopt_trie_section (0, NULL, dom, patt, 1);
+ GF_FREE (dom);
+ if (ret) {
+ patt[0] = NULL;
+ goto out;
+ }
+ if (!patt[0])
+ goto out;
+
+ *hint = "...";
+ ret = volopt_trie_section (1, patt, dot + 1, hint, 2);
+ if (ret)
+ goto out;
+ if (*hint) {
+ ret = gf_asprintf (&fullhint, "%s.%s", patt[0], *hint);
+ GF_FREE (*hint);
+ if (ret >= 0) {
+ ret = 0;
+ *hint = fullhint;
+ }
+ }
+
+ out:
+ GF_FREE (patt[0]);
+ if (ret)
+ *hint = NULL;
+
+ return ret;
+}
+
+
+
+
+/**************************
+ *
+ * Volume generation engine
+ *
+ **************************/
+
+
+typedef int (*volgen_opthandler_t) (volgen_graph_t *graph,
+ struct volopt_map_entry *vme,
+ void *param);
+
+struct opthandler_data {
+ volgen_graph_t *graph;
+ volgen_opthandler_t handler;
+ struct volopt_map_entry *vme;
+ gf_boolean_t found;
+ gf_boolean_t data_t_fake;
+ int rv;
+ char *volname;
+ void *param;
+};
+
+static int
+process_option (char *key, data_t *value, void *param)
+{
+ struct opthandler_data *odt = param;
+ struct volopt_map_entry vme = {0,};
+
+ if (odt->rv)
+ return 0;
+ odt->found = _gf_true;
+
+ vme.key = key;
+ vme.voltype = odt->vme->voltype;
+ vme.option = odt->vme->option;
+ vme.op_version = odt->vme->op_version;
+
+ if (!vme.option) {
+ vme.option = strrchr (key, '.');
+ if (vme.option)
+ vme.option++;
+ else
+ vme.option = key;
+ }
+ if (odt->data_t_fake)
+ vme.value = (char *)value;
+ else
+ vme.value = value->data;
+
+ odt->rv = odt->handler (odt->graph, &vme, odt->param);
+ return 0;
+}
+
+static int
+volgen_graph_set_options_generic (volgen_graph_t *graph, dict_t *dict,
+ void *param, volgen_opthandler_t handler)
+{
+ struct volopt_map_entry *vme = NULL;
+ struct opthandler_data odt = {0,};
+ data_t *data = NULL;
+
+ odt.graph = graph;
+ odt.handler = handler;
+ odt.param = param;
+ (void)data;
+
+ for (vme = glusterd_volopt_map; vme->key; vme++) {
+ odt.vme = vme;
+ odt.found = _gf_false;
+ odt.data_t_fake = _gf_false;
+
+ data = dict_get (dict, vme->key);
+
+ if (data)
+ process_option (vme->key, data, &odt);
+ if (odt.rv)
+ return odt.rv;
+
+ if (odt.found)
+ continue;
+
+ /* check for default value */
+
+ if (vme->value) {
+ /* stupid hack to be able to reuse dict iterator
+ * in this context
+ */
+ odt.data_t_fake = _gf_true;
+ process_option (vme->key, (data_t *)vme->value, &odt);
+ if (odt.rv)
+ return odt.rv;
+ }
+ }
+
+ return 0;
+}
+
+static int
+no_filter_option_handler (volgen_graph_t *graph, struct volopt_map_entry *vme,
+ void *param)
+{
+ xlator_t *trav;
+ int ret = 0;
+
+ for (trav = first_of (graph); trav; trav = trav->next) {
+ if (strcmp (trav->type, vme->voltype) != 0)
+ continue;
+
+ ret = xlator_set_option (trav, vme->option, vme->value);
+ if (ret)
+ break;
+ }
+ return ret;
+}
+
+static int
+basic_option_handler (volgen_graph_t *graph, struct volopt_map_entry *vme,
+ void *param)
+{
+ int ret = 0;
+
+ if (vme->option[0] == '!')
+ goto out;
+
+ ret = no_filter_option_handler (graph, vme, param);
+out:
+ return ret;
+}
+
+static int
+volgen_graph_set_options (volgen_graph_t *graph, dict_t *dict)
+{
+ return volgen_graph_set_options_generic (graph, dict, NULL,
+ &basic_option_handler);
+}
+
+static int
+optget_option_handler (volgen_graph_t *graph, struct volopt_map_entry *vme,
+ void *param)
+{
+ struct volopt_map_entry *vme2 = param;
+
+ if (strcmp (vme->key, vme2->key) == 0)
+ vme2->value = vme->value;
+
+ return 0;
+}
+
+static glusterd_server_xlator_t
+get_server_xlator (char *xlator)
+{
+ glusterd_server_xlator_t subvol = GF_XLATOR_NONE;
+
+ if (strcmp (xlator, "posix") == 0)
+ subvol = GF_XLATOR_POSIX;
+ if (strcmp (xlator, "acl") == 0)
+ subvol = GF_XLATOR_ACL;
+ if (strcmp (xlator, "locks") == 0)
+ subvol = GF_XLATOR_LOCKS;
+ if (strcmp (xlator, "io-threads") == 0)
+ subvol = GF_XLATOR_IOT;
+ if (strcmp (xlator, "index") == 0)
+ subvol = GF_XLATOR_INDEX;
+ if (strcmp (xlator, "marker") == 0)
+ subvol = GF_XLATOR_MARKER;
+ if (strcmp (xlator, "io-stats") == 0)
+ subvol = GF_XLATOR_IO_STATS;
+ if (strcmp (xlator, "bd") == 0)
+ subvol = GF_XLATOR_BD;
+
+ return subvol;
+}
+
+static glusterd_client_xlator_t
+get_client_xlator (char *xlator)
+{
+ glusterd_client_xlator_t subvol = GF_CLNT_XLATOR_NONE;
+
+ if (strcmp (xlator, "client") == 0)
+ subvol = GF_CLNT_XLATOR_FUSE;
+
+ return subvol;
+}
+
+static int
+debugxl_option_handler (volgen_graph_t *graph, struct volopt_map_entry *vme,
+ void *param)
+{
+ char *volname = NULL;
+ gf_boolean_t enabled = _gf_false;
+
+ volname = param;
+
+ if (strcmp (vme->option, "!debug") != 0)
+ return 0;
+
+ if (!strcmp (vme->key , "debug.trace") ||
+ !strcmp (vme->key, "debug.error-gen")) {
+ if (get_server_xlator (vme->value) == GF_XLATOR_NONE &&
+ get_client_xlator (vme->value) == GF_CLNT_XLATOR_NONE)
+ return 0;
+ else
+ goto add_graph;
+ }
+
+ if (gf_string2boolean (vme->value, &enabled) == -1)
+ return -1;
+ if (!enabled)
+ return 0;
+
+add_graph:
+ if (volgen_graph_add (graph, vme->voltype, volname))
+ return 0;
+ else
+ return -1;
+}
+
+int
+check_and_add_debug_xl (volgen_graph_t *graph, dict_t *set_dict, char *volname,
+ char *xlname)
+{
+ int ret = 0;
+ char *value_str = NULL;
+
+ ret = dict_get_str (set_dict, "debug.trace", &value_str);
+ if (!ret) {
+ if (strcmp (xlname, value_str) == 0) {
+ ret = volgen_graph_set_options_generic (graph, set_dict, volname,
+ &debugxl_option_handler);
+ if (ret)
+ goto out;
+ }
+ }
+
+ ret = dict_get_str (set_dict, "debug.error-gen", &value_str);
+ if (!ret) {
+ if (strcmp (xlname, value_str) == 0) {
+ ret = volgen_graph_set_options_generic (graph, set_dict, volname,
+ &debugxl_option_handler);
+ if (ret)
+ goto out;
+ }
+ }
+
+ ret = 0;
+
+out:
+ return ret;
+}
+
+/* This getter considers defaults also. */
+static int
+volgen_dict_get (dict_t *dict, char *key, char **value)
+{
+ struct volopt_map_entry vme = {0,};
+ int ret = 0;
+
+ vme.key = key;
+
+ ret = volgen_graph_set_options_generic (NULL, dict, &vme,
+ &optget_option_handler);
+ if (ret) {
+ gf_log ("", GF_LOG_ERROR, "Out of memory");
+
+ return -1;
+ }
+
+ *value = vme.value;
+
+ return 0;
+}
+
+static int
+option_complete (char *key, char **completion)
+{
+ struct volopt_map_entry *vme = NULL;
+
+ *completion = NULL;
+ for (vme = glusterd_volopt_map; vme->key; vme++) {
+ if (strcmp (strchr (vme->key, '.') + 1, key) != 0)
+ continue;
+
+ if (*completion && strcmp (*completion, vme->key) != 0) {
+ /* cancel on non-unique match */
+ *completion = NULL;
+
+ return 0;
+ } else
+ *completion = vme->key;
+ }
+
+ if (*completion) {
+ /* For sake of unified API we want
+ * have the completion to be a to-be-freed
+ * string.
+ */
+ *completion = gf_strdup (*completion);
+ return -!*completion;
+ }
+
+ return 0;
+}
+
+int
+glusterd_volinfo_get (glusterd_volinfo_t *volinfo, char *key, char **value)
+{
+ return volgen_dict_get (volinfo->dict, key, value);
+}
+
+int
+glusterd_volinfo_get_boolean (glusterd_volinfo_t *volinfo, char *key)
+{
+ char *val = NULL;
+ gf_boolean_t boo = _gf_false;
+ int ret = 0;
+
+ ret = glusterd_volinfo_get (volinfo, key, &val);
+ if (ret)
+ return -1;
+
+ if (val)
+ ret = gf_string2boolean (val, &boo);
+ if (ret) {
+ gf_log ("", GF_LOG_ERROR, "value for %s option is not valid", key);
+
+ return -1;
+ }
+
+ return boo;
+}
+
+gf_boolean_t
+glusterd_check_voloption_flags (char *key, int32_t flags)
+{
+ char *completion = NULL;
+ struct volopt_map_entry *vmep = NULL;
+ int ret = 0;
+
+ COMPLETE_OPTION(key, completion, ret);
+ for (vmep = glusterd_volopt_map; vmep->key; vmep++) {
+ if (strcmp (vmep->key, key) == 0) {
+ if (vmep->flags & flags)
+ return _gf_true;
+ else
+ return _gf_false;
+ }
+ }
+
+ return _gf_false;
+}
+
+gf_boolean_t
+glusterd_check_globaloption (char *key)
+{
+ char *completion = NULL;
+ struct volopt_map_entry *vmep = NULL;
+ int ret = 0;
+
+ COMPLETE_OPTION(key, completion, ret);
+ for (vmep = glusterd_volopt_map; vmep->key; vmep++) {
+ if (strcmp (vmep->key, key) == 0) {
+ if ((vmep->type == GLOBAL_DOC) ||
+ (vmep->type == GLOBAL_NO_DOC))
+ return _gf_true;
+ else
+ return _gf_false;
+ }
+ }
+
+ return _gf_false;
+}
+
+gf_boolean_t
+glusterd_check_localoption (char *key)
+{
+ char *completion = NULL;
+ struct volopt_map_entry *vmep = NULL;
+ int ret = 0;
+
+ COMPLETE_OPTION(key, completion, ret);
+ for (vmep = glusterd_volopt_map; vmep->key; vmep++) {
+ if (strcmp (vmep->key, key) == 0) {
+ if ((vmep->type == DOC) ||
+ (vmep->type == NO_DOC))
+ return _gf_true;
+ else
+ return _gf_false;
+ }
+ }
+
+ return _gf_false;
+}
+
+int
+glusterd_check_voloption (char *key)
+{
+ char *completion = NULL;
+ struct volopt_map_entry *vmep = NULL;
+ int ret = 0;
+
+ COMPLETE_OPTION(key, completion, ret);
+ for (vmep = glusterd_volopt_map; vmep->key; vmep++) {
+ if (strcmp (vmep->key, key) == 0) {
+ if ((vmep->type == DOC) ||
+ (vmep->type == DOC))
+ return _gf_true;
+ else
+ return _gf_false;
+ }
+ }
+
+ return _gf_false;
+
+}
+
+int
+glusterd_check_option_exists (char *key, char **completion)
+{
+ struct volopt_map_entry vme = {0,};
+ struct volopt_map_entry *vmep = NULL;
+ int ret = 0;
+ xlator_t *this = THIS;
+
+ (void)vme;
+ (void)vmep;
+
+ if (!strchr (key, '.')) {
+ if (completion) {
+ ret = option_complete (key, completion);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Out of memory");
+ return -1;
+ }
+
+ ret = !!*completion;
+ if (ret)
+ return ret;
+ else
+ goto trie;
+ } else
+ return 0;
+ }
+
+ for (vmep = glusterd_volopt_map; vmep->key; vmep++) {
+ if (strcmp (vmep->key, key) == 0) {
+ ret = 1;
+ break;
+ }
+ }
+
+ if (ret || !completion)
+ return ret;
+
+ trie:
+ ret = volopt_trie (key, completion);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Some error occurred during keyword hinting");
+ }
+
+ return ret;
+}
+
+char*
+glusterd_get_trans_type_rb (gf_transport_type ttype)
+{
+ char *trans_type = NULL;
+
+ switch (ttype) {
+ case GF_TRANSPORT_RDMA:
+ gf_asprintf (&trans_type, "rdma");
+ break;
+ case GF_TRANSPORT_TCP:
+ case GF_TRANSPORT_BOTH_TCP_RDMA:
+ gf_asprintf (&trans_type, "tcp");
+ break;
+ default:
+ gf_log (THIS->name, GF_LOG_ERROR, "Unknown "
+ "transport type");
+ }
+
+ return trans_type;
+}
+
+static int
+_xl_link_children (xlator_t *parent, xlator_t *children, size_t child_count)
+{
+ xlator_t *trav = NULL;
+ size_t seek = 0;
+ int ret = -1;
+
+ if (child_count == 0)
+ goto out;
+ seek = child_count;
+ for (trav = children; --seek; trav = trav->next);
+ for (; child_count--; trav = trav->prev) {
+ ret = volgen_xlator_link (parent, trav);
+ if (ret)
+ goto out;
+ }
+ ret = 0;
+out:
+ return ret;
+}
+
+static int
+volgen_graph_merge_sub (volgen_graph_t *dgraph, volgen_graph_t *sgraph,
+ size_t child_count)
+{
+ xlator_t *trav = NULL;
+ int ret = 0;
+
+ GF_ASSERT (dgraph->graph.first);
+
+ ret = _xl_link_children (first_of (dgraph), first_of (sgraph),
+ child_count);
+ if (ret)
+ goto out;
+
+ for (trav = first_of (dgraph); trav->next; trav = trav->next);
+
+ trav->next = first_of (sgraph);
+ trav->next->prev = trav;
+ dgraph->graph.xl_count += sgraph->graph.xl_count;
+
+out:
+ return ret;
+}
+
+static void
+volgen_apply_filters (char *orig_volfile)
+{
+ DIR *filterdir = NULL;
+ struct dirent entry = {0,};
+ struct dirent *next = NULL;
+ char *filterpath = NULL;
+ struct stat statbuf = {0,};
+
+ filterdir = opendir(FILTERDIR);
+ if (!filterdir) {
+ return;
+ }
+
+ while ((readdir_r(filterdir,&entry,&next) == 0) && next) {
+ if (!strncmp(entry.d_name,".",sizeof(entry.d_name))) {
+ continue;
+ }
+ if (!strncmp(entry.d_name,"..",sizeof(entry.d_name))) {
+ continue;
+ }
+ /*
+ * d_type isn't guaranteed to be present/valid on all systems,
+ * so do an explicit stat instead.
+ */
+ if (gf_asprintf(&filterpath,"%s/%.*s",FILTERDIR,
+ sizeof(entry.d_name), entry.d_name) == (-1)) {
+ continue;
+ }
+ /* Deliberately use stat instead of lstat to allow symlinks. */
+ if (stat(filterpath,&statbuf) == (-1)) {
+ goto free_fp;
+ }
+ if (!S_ISREG(statbuf.st_mode)) {
+ goto free_fp;
+ }
+ /*
+ * We could check the mode in statbuf directly, or just skip
+ * this entirely and check for EPERM after exec fails, but this
+ * is cleaner.
+ */
+ if (access(filterpath,X_OK) != 0) {
+ goto free_fp;
+ }
+ if (runcmd(filterpath,orig_volfile,NULL)) {
+ gf_log("",GF_LOG_ERROR,"failed to run filter %.*s",
+ (int)sizeof(entry.d_name), entry.d_name);
+ }
+free_fp:
+ GF_FREE(filterpath);
+ }
+}
+
+static int
+volgen_write_volfile (volgen_graph_t *graph, char *filename)
+{
+ char *ftmp = NULL;
+ FILE *f = NULL;
+ int fd = 0;
+ xlator_t *this = NULL;
+
+ this = THIS;
+
+ if (gf_asprintf (&ftmp, "%s.tmp", filename) == -1) {
+ ftmp = NULL;
+
+ goto error;
+ }
+
+ fd = creat (ftmp, S_IRUSR | S_IWUSR);
+ if (fd < 0) {
+ gf_log (this->name, GF_LOG_ERROR, "%s",
+ strerror (errno));
+ goto error;
+ }
+
+ close (fd);
+
+ f = fopen (ftmp, "w");
+ if (!f)
+ goto error;
+
+ if (glusterfs_graph_print_file (f, &graph->graph) == -1)
+ goto error;
+
+ if (fclose (f) != 0) {
+ gf_log (THIS->name, GF_LOG_ERROR, "fclose on the file %s "
+ "failed (%s)", ftmp, strerror (errno));
+ /*
+ * Even though fclose has failed here, we have to set f to NULL.
+ * Otherwise when the code path goes to error, there again we
+ * try to close it which might cause undefined behavior such as
+ * process crash.
+ */
+ f = NULL;
+ goto error;
+ }
+
+ f = NULL;
+
+ if (rename (ftmp, filename) == -1)
+ goto error;
+
+ GF_FREE (ftmp);
+
+ volgen_apply_filters(filename);
+
+ return 0;
+
+ error:
+
+ GF_FREE (ftmp);
+ if (f)
+ fclose (f);
+
+ gf_log (this->name, GF_LOG_ERROR,
+ "failed to create volfile %s", filename);
+
+ return -1;
+}
+
+static void
+volgen_graph_free (volgen_graph_t *graph)
+{
+ xlator_t *trav = NULL;
+ xlator_t *trav_old = NULL;
+
+ for (trav = first_of (graph) ;; trav = trav->next) {
+ if (trav_old)
+ xlator_destroy (trav_old);
+
+ trav_old = trav;
+
+ if (!trav)
+ break;
+ }
+}
+
+static int
+build_graph_generic (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
+ dict_t *mod_dict, void *param,
+ int (*builder) (volgen_graph_t *graph,
+ glusterd_volinfo_t *volinfo,
+ dict_t *set_dict, void *param))
+{
+ dict_t *set_dict = NULL;
+ int ret = 0;
+
+ if (mod_dict) {
+ set_dict = dict_copy (volinfo->dict, NULL);
+ if (!set_dict)
+ return -1;
+ dict_copy (mod_dict, set_dict);
+ /* XXX dict_copy swallows errors */
+ } else {
+ set_dict = volinfo->dict;
+ }
+
+ ret = builder (graph, volinfo, set_dict, param);
+ if (!ret)
+ ret = volgen_graph_set_options (graph, set_dict);
+
+ if (mod_dict)
+ dict_destroy (set_dict);
+
+ return ret;
+}
+
+static gf_transport_type
+transport_str_to_type (char *tt)
+{
+ gf_transport_type type = GF_TRANSPORT_TCP;
+
+ if (!strcmp ("tcp", tt))
+ type = GF_TRANSPORT_TCP;
+ else if (!strcmp ("rdma", tt))
+ type = GF_TRANSPORT_RDMA;
+ else if (!strcmp ("tcp,rdma", tt))
+ type = GF_TRANSPORT_BOTH_TCP_RDMA;
+ return type;
+}
+
+static void
+transport_type_to_str (gf_transport_type type, char *tt)
+{
+ switch (type) {
+ case GF_TRANSPORT_RDMA:
+ strcpy (tt, "rdma");
+ break;
+ case GF_TRANSPORT_TCP:
+ strcpy (tt, "tcp");
+ break;
+ case GF_TRANSPORT_BOTH_TCP_RDMA:
+ strcpy (tt, "tcp,rdma");
+ break;
+ }
+}
+
+static void
+get_vol_transport_type (glusterd_volinfo_t *volinfo, char *tt)
+{
+ transport_type_to_str (volinfo->transport_type, tt);
+}
+
+static void
+get_vol_nfs_transport_type (glusterd_volinfo_t *volinfo, char *tt)
+{
+ if (volinfo->nfs_transport_type == GF_TRANSPORT_BOTH_TCP_RDMA) {
+ gf_log ("", GF_LOG_ERROR, "%s:nfs transport cannot be both"
+ " tcp and rdma", volinfo->volname);
+ GF_ASSERT (0);
+ }
+ transport_type_to_str (volinfo->nfs_transport_type, tt);
+}
+
+/* gets the volinfo, dict, a character array for filling in
+ * the transport type and a boolean option which says whether
+ * the transport type is required for nfs or not. If its not
+ * for nfs, then it is considered as the client transport
+ * and client transport type is filled in the character array
+ */
+static void
+get_transport_type (glusterd_volinfo_t *volinfo, dict_t *set_dict,
+ char *transt, gf_boolean_t is_nfs)
+{
+ int ret = -1;
+ char *tt = NULL;
+ char *key = NULL;
+ typedef void (*transport_type) (glusterd_volinfo_t *volinfo, char *tt);
+ transport_type get_transport;
+
+ if (is_nfs == _gf_false) {
+ key = "client-transport-type";
+ get_transport = get_vol_transport_type;
+ } else {
+ key = "nfs.transport-type";
+ get_transport = get_vol_nfs_transport_type;
+ }
+
+ ret = dict_get_str (set_dict, key, &tt);
+ if (ret)
+ get_transport (volinfo, transt);
+ if (!ret)
+ strcpy (transt, tt);
+}
+
+static int
+server_auth_option_handler (volgen_graph_t *graph,
+ struct volopt_map_entry *vme, void *param)
+{
+ xlator_t *xl = NULL;
+ xlator_list_t *trav = NULL;
+ char *aa = NULL;
+ int ret = 0;
+ char *key = NULL;
+
+ if (strcmp (vme->option, "!server-auth") != 0)
+ return 0;
+
+ xl = first_of (graph);
+
+ /* from 'auth.allow' -> 'allow', and 'auth.reject' -> 'reject' */
+ key = strchr (vme->key, '.') + 1;
+
+ for (trav = xl->children; trav; trav = trav->next) {
+ ret = gf_asprintf (&aa, "auth.addr.%s.%s", trav->xlator->name,
+ key);
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+ if (ret)
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+loglevel_option_handler (volgen_graph_t *graph,
+ struct volopt_map_entry *vme, void *param)
+{
+ char *role = param;
+ struct volopt_map_entry vme2 = {0,};
+
+ if ( (strcmp (vme->option, "!client-log-level") != 0 &&
+ strcmp (vme->option, "!brick-log-level") != 0)
+ || !strstr (vme->key, role))
+ return 0;
+
+ memcpy (&vme2, vme, sizeof (vme2));
+ vme2.option = "log-level";
+
+ return basic_option_handler (graph, &vme2, NULL);
+}
+
+static int
+server_check_marker_off (volgen_graph_t *graph, struct volopt_map_entry *vme,
+ glusterd_volinfo_t *volinfo)
+{
+ gf_boolean_t bool = _gf_false;
+ int ret = 0;
+
+ GF_ASSERT (volinfo);
+ GF_ASSERT (vme);
+
+ if (strcmp (vme->option, "!xtime") != 0)
+ return 0;
+
+ ret = gf_string2boolean (vme->value, &bool);
+ if (ret || bool)
+ goto out;
+
+ ret = glusterd_volinfo_get_boolean (volinfo, VKEY_MARKER_XTIME);
+ if (ret < 0) {
+ gf_log ("", GF_LOG_WARNING, "failed to get the marker status");
+ ret = -1;
+ goto out;
+ }
+
+ if (ret) {
+ bool = _gf_false;
+ ret = glusterd_check_gsync_running (volinfo, &bool);
+
+ if (bool) {
+ gf_log ("", GF_LOG_WARNING, GEOREP" sessions active"
+ "for the volume %s, cannot disable marker "
+ ,volinfo->volname);
+ set_graph_errstr (graph,
+ VKEY_MARKER_XTIME" cannot be disabled "
+ "while "GEOREP" sessions exist");
+ ret = -1;
+ goto out;
+ }
+
+ if (ret) {
+ gf_log ("", GF_LOG_WARNING, "Unable to get the status"
+ " of active gsync session");
+ goto out;
+ }
+ }
+
+ ret = 0;
+ out:
+ gf_log ("", GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+
+}
+
+static int
+sys_loglevel_option_handler (volgen_graph_t *graph,
+ struct volopt_map_entry *vme,
+ void *param)
+{
+ char *role = NULL;
+ struct volopt_map_entry vme2 = {0,};
+
+ role = (char *) param;
+
+ if (strcmp (vme->option, "!sys-log-level") != 0 ||
+ !strstr (vme->key, role))
+ return 0;
+
+ memcpy (&vme2, vme, sizeof (vme2));
+ vme2.option = "sys-log-level";
+
+ return basic_option_handler (graph, &vme2, NULL);
+}
+
+static int
+volgen_graph_set_xl_options (volgen_graph_t *graph, dict_t *dict)
+{
+ int32_t ret = -1;
+ char *xlator = NULL;
+ char xlator_match[1024] = {0,}; /* for posix* -> *posix* */
+ char *loglevel = NULL;
+ xlator_t *trav = NULL;
+
+ ret = dict_get_str (dict, "xlator", &xlator);
+ if (ret)
+ goto out;
+
+ ret = dict_get_str (dict, "loglevel", &loglevel);
+ if (ret)
+ goto out;
+
+ snprintf (xlator_match, 1024, "*%s", xlator);
+
+ for (trav = first_of (graph); trav; trav = trav->next) {
+ if (fnmatch(xlator_match, trav->type, FNM_NOESCAPE) == 0) {
+ gf_log ("glusterd", GF_LOG_DEBUG, "Setting log level for xlator: %s",
+ trav->type);
+ ret = xlator_set_option (trav, "log-level", loglevel);
+ if (ret)
+ break;
+ }
+ }
+
+ out:
+ return ret;
+}
+
+static int
+server_spec_option_handler (volgen_graph_t *graph,
+ struct volopt_map_entry *vme, void *param)
+{
+ int ret = 0;
+ glusterd_volinfo_t *volinfo = NULL;
+
+ volinfo = param;
+
+ ret = server_auth_option_handler (graph, vme, NULL);
+ if (!ret)
+ ret = server_check_marker_off (graph, vme, volinfo);
+
+ if (!ret)
+ ret = loglevel_option_handler (graph, vme, "brick");
+
+ if (!ret)
+ ret = sys_loglevel_option_handler (graph, vme, "brick");
+
+ return ret;
+}
+
+static int
+server_spec_extended_option_handler (volgen_graph_t *graph,
+ struct volopt_map_entry *vme, void *param)
+{
+ int ret = 0;
+ dict_t *dict = NULL;
+
+ GF_ASSERT (param);
+ dict = (dict_t *)param;
+
+ ret = server_auth_option_handler (graph, vme, NULL);
+ if (!ret)
+ ret = volgen_graph_set_xl_options (graph, dict);
+
+ return ret;
+}
+
+static void get_vol_tstamp_file (char *filename, glusterd_volinfo_t *volinfo);
+
+static int
+server_graph_builder (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
+ dict_t *set_dict, void *param)
+{
+ char *volname = NULL;
+ char *path = NULL;
+ int pump = 0;
+ xlator_t *xl = NULL;
+ xlator_t *txl = NULL;
+ xlator_t *rbxl = NULL;
+ char transt[16] = {0,};
+ char *ptranst = NULL;
+ char volume_id[64] = {0,};
+ char tstamp_file[PATH_MAX] = {0,};
+ int ret = 0;
+ char *xlator = NULL;
+ char *loglevel = NULL;
+ char *username = NULL;
+ char *password = NULL;
+ char index_basepath[PATH_MAX] = {0};
+ char key[1024] = {0};
+ glusterd_brickinfo_t *brickinfo = NULL;
+ char changelog_basepath[PATH_MAX] = {0,};
+
+ brickinfo = param;
+ path = brickinfo->path;
+ volname = volinfo->volname;
+ get_vol_transport_type (volinfo, transt);
+
+ ret = dict_get_str (set_dict, "xlator", &xlator);
+
+ /* got a cli log level request */
+ if (!ret) {
+ ret = dict_get_str (set_dict, "loglevel", &loglevel);
+ if (ret) {
+ gf_log ("glusterd", GF_LOG_ERROR, "could not get both"
+ " translator name and loglevel for log level request");
+ goto out;
+ }
+ }
+
+ xl = volgen_graph_add (graph, "storage/posix", volname);
+ if (!xl)
+ return -1;
+
+ ret = xlator_set_option (xl, "directory", path);
+ if (ret)
+ return -1;
+
+ ret = xlator_set_option (xl, "volume-id",
+ uuid_utoa (volinfo->volume_id));
+ if (ret)
+ return -1;
+
+ ret = check_and_add_debug_xl (graph, set_dict, volname,
+ "posix");
+ if (ret)
+ return -1;
+#ifdef HAVE_BD_XLATOR
+ if (*brickinfo->vg != '\0') {
+ /* Now add BD v2 xlator if volume is BD type */
+ xl = volgen_graph_add (graph, "storage/bd", volname);
+ if (!xl)
+ return -1;
+
+ ret = xlator_set_option (xl, "device", "vg");
+ if (ret)
+ return -1;
+ ret = xlator_set_option (xl, "export", brickinfo->vg);
+ if (ret)
+ return -1;
+
+ ret = check_and_add_debug_xl (graph, set_dict, volname, "bd");
+ if (ret)
+ return -1;
+
+ }
+#endif
+
+ xl = volgen_graph_add (graph, "features/changelog", volname);
+ if (!xl)
+ return -1;
+
+ ret = xlator_set_option (xl, "changelog-brick", path);
+ if (ret)
+ return -1;
+
+ snprintf (changelog_basepath, sizeof (changelog_basepath),
+ "%s/%s", path, ".glusterfs/changelogs");
+ ret = xlator_set_option (xl, "changelog-dir", changelog_basepath);
+ if (ret)
+ return -1;
+
+ ret = check_and_add_debug_xl (graph, set_dict, volname, "changelog");
+ if (ret)
+ return -1;
+
+ xl = volgen_graph_add (graph, "features/access-control", volname);
+ if (!xl)
+ return -1;
+
+ ret = check_and_add_debug_xl (graph, set_dict, volname, "acl");
+ if (ret)
+ return -1;
+
+ xl = volgen_graph_add (graph, "features/locks", volname);
+ if (!xl)
+ return -1;
+
+ ret = check_and_add_debug_xl (graph, set_dict, volname, "locks");
+ if (ret)
+ return -1;
+
+ xl = volgen_graph_add (graph, "performance/io-threads", volname);
+ if (!xl)
+ return -1;
+
+ ret = check_and_add_debug_xl (graph, set_dict, volname, "io-threads");
+ if (ret)
+ return -1;
+
+ ret = dict_get_int32 (volinfo->dict, "enable-pump", &pump);
+ if (ret == -ENOENT)
+ ret = pump = 0;
+ if (ret)
+ return -1;
+
+ username = glusterd_auth_get_username (volinfo);
+ password = glusterd_auth_get_password (volinfo);
+
+ if (pump) {
+ txl = first_of (graph);
+
+ rbxl = volgen_graph_add_nolink (graph, "protocol/client",
+ "%s-replace-brick", volname);
+ if (!rbxl)
+ return -1;
+
+ ptranst = glusterd_get_trans_type_rb (volinfo->transport_type);
+ if (NULL == ptranst)
+ return -1;
+
+ if (username) {
+ ret = xlator_set_option (rbxl, "username", username);
+ if (ret)
+ return -1;
+ }
+
+ if (password) {
+ ret = xlator_set_option (rbxl, "password", password);
+ if (ret)
+ return -1;
+ }
+
+ ret = xlator_set_option (rbxl, "transport-type", ptranst);
+ GF_FREE (ptranst);
+ if (ret)
+ return -1;
+
+ xl = volgen_graph_add_nolink (graph, "cluster/pump", "%s-pump",
+ volname);
+ if (!xl)
+ return -1;
+ ret = volgen_xlator_link (xl, txl);
+ if (ret)
+ return -1;
+ ret = volgen_xlator_link (xl, rbxl);
+ if (ret)
+ return -1;
+ }
+
+ xl = volgen_graph_add (graph, "features/index", volname);
+ if (!xl)
+ return -1;
+
+ snprintf (index_basepath, sizeof (index_basepath), "%s/%s",
+ path, ".glusterfs/indices");
+ ret = xlator_set_option (xl, "index-base", index_basepath);
+ if (ret)
+ return -1;
+
+ ret = check_and_add_debug_xl (graph, set_dict, volname,
+ "index");
+ if (ret)
+ return -1;
+
+ xl = volgen_graph_add (graph, "features/marker", volname);
+ if (!xl)
+ return -1;
+
+ uuid_unparse (volinfo->volume_id, volume_id);
+ ret = xlator_set_option (xl, "volume-uuid", volume_id);
+ if (ret)
+ return -1;
+ get_vol_tstamp_file (tstamp_file, volinfo);
+ ret = xlator_set_option (xl, "timestamp-file", tstamp_file);
+ if (ret)
+ return -1;
+
+ ret = check_and_add_debug_xl (graph, set_dict, volname, "marker");
+ if (ret)
+ return -1;
+
+ if (dict_get_str_boolean (set_dict, "features.read-only", 0) &&
+ dict_get_str_boolean (set_dict, "features.worm",0)) {
+ gf_log (THIS->name, GF_LOG_ERROR,
+ "read-only and worm cannot be set together");
+ ret = -1;
+ goto out;
+ }
+
+ /* Check for read-only volume option, and add it to the graph */
+ if (dict_get_str_boolean (set_dict, "features.read-only", 0)
+ || volinfo -> is_snap_volume) {
+ xl = volgen_graph_add (graph, "features/read-only", volname);
+ if (!xl) {
+ ret = -1;
+ goto out;
+ }
+ }
+
+ /* Check for worm volume option, and add it to the graph */
+ if (dict_get_str_boolean (set_dict, "features.worm", 0)) {
+ xl = volgen_graph_add (graph, "features/worm", volname);
+ if (!xl) {
+ ret = -1;
+ goto out;
+ }
+ }
+
+ /* Check for compress volume option, and add it to the graph on server side */
+ if (dict_get_str_boolean (set_dict, "features.compress", 0)) {
+ xl = volgen_graph_add (graph, "features/cdc", volname);
+ if (!xl) {
+ ret = -1;
+ goto out;
+ }
+ ret = dict_set_str (set_dict, "compress.mode", "server");
+ if (ret)
+ goto out;
+ }
+
+ xl = volgen_graph_add_as (graph, "debug/io-stats", path);
+ if (!xl)
+ return -1;
+
+ xl = volgen_graph_add (graph, "protocol/server", volname);
+ if (!xl)
+ return -1;
+ ret = xlator_set_option (xl, "transport-type", transt);
+ if (ret)
+ return -1;
+
+ /*In the case of running multiple glusterds on a single machine,
+ * we should ensure that bricks don't listen on all IPs on that
+ * machine and break the IP based separation being brought about.*/
+ if (dict_get (THIS->options, "transport.socket.bind-address")) {
+ ret = xlator_set_option (xl, "transport.socket.bind-address",
+ brickinfo->hostname);
+ if (ret)
+ return -1;
+ }
+
+ if (username) {
+ memset (key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "auth.login.%s.allow", path);
+
+ ret = xlator_set_option (xl, key, username);
+ if (ret)
+ return -1;
+ }
+
+ if (password) {
+ memset (key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "auth.login.%s.password",
+ username);
+
+ ret = xlator_set_option (xl, key, password);
+ if (ret)
+ return -1;
+ }
+
+ ret = volgen_graph_set_options_generic (graph, set_dict,
+ (xlator && loglevel) ? (void *)set_dict : volinfo,
+ (xlator && loglevel) ? &server_spec_extended_option_handler :
+ &server_spec_option_handler);
+
+ out:
+ return ret;
+}
+
+
+/* builds a graph for server role , with option overrides in mod_dict */
+static int
+build_server_graph (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
+ dict_t *mod_dict, glusterd_brickinfo_t *brickinfo)
+{
+ return build_graph_generic (graph, volinfo, mod_dict, brickinfo,
+ &server_graph_builder);
+}
+
+static int
+perfxl_option_handler (volgen_graph_t *graph, struct volopt_map_entry *vme,
+ void *param)
+{
+ gf_boolean_t enabled = _gf_false;
+ glusterd_volinfo_t *volinfo = NULL;
+
+ GF_ASSERT (param);
+ volinfo = param;
+
+ if (strcmp (vme->option, "!perf") != 0)
+ return 0;
+
+ if (gf_string2boolean (vme->value, &enabled) == -1)
+ return -1;
+ if (!enabled)
+ return 0;
+
+ /* Check op-version before adding the 'open-behind' xlator in the graph
+ */
+ if (!strcmp (vme->key, "performance.open-behind") &&
+ (vme->op_version > volinfo->client_op_version))
+ return 0;
+
+ if (volgen_graph_add (graph, vme->voltype, volinfo->volname))
+ return 0;
+ else
+ return -1;
+}
+
+static int
+nfsperfxl_option_handler (volgen_graph_t *graph, struct volopt_map_entry *vme,
+ void *param)
+{
+ char *volname = NULL;
+ gf_boolean_t enabled = _gf_false;
+
+ volname = param;
+
+ if (strcmp (vme->option, "!nfsperf") != 0)
+ return 0;
+
+ if (gf_string2boolean (vme->value, &enabled) == -1)
+ return -1;
+ if (!enabled)
+ return 0;
+
+ if (volgen_graph_add (graph, vme->voltype, volname))
+ return 0;
+ else
+ return -1;
+}
+
+#if (HAVE_LIB_XML)
+static int
+end_sethelp_xml_doc (xmlTextWriterPtr writer)
+{
+ int ret = -1;
+
+ ret = xmlTextWriterEndElement(writer);
+ if (ret < 0) {
+ gf_log ("glusterd", GF_LOG_ERROR, "Could not end an "
+ "xmlElemetnt");
+ ret = -1;
+ goto out;
+ }
+ ret = xmlTextWriterEndDocument (writer);
+ if (ret < 0) {
+ gf_log ("glusterd", GF_LOG_ERROR, "Could not end an "
+ "xmlDocument");
+ ret = -1;
+ goto out;
+ }
+ ret = 0;
+ out:
+ gf_log ("glusterd", GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+
+}
+
+static int
+init_sethelp_xml_doc (xmlTextWriterPtr *writer, xmlBufferPtr *buf)
+{
+ int ret;
+
+ *buf = xmlBufferCreateSize (8192);
+ if (buf == NULL) {
+ gf_log ("glusterd", GF_LOG_ERROR, "Error creating the xml "
+ "buffer");
+ ret = -1;
+ goto out;
+ }
+
+ xmlBufferSetAllocationScheme (*buf,XML_BUFFER_ALLOC_DOUBLEIT);
+
+ *writer = xmlNewTextWriterMemory(*buf, 0);
+ if (writer == NULL) {
+ gf_log ("glusterd", GF_LOG_ERROR, " Error creating the xml "
+ "writer");
+ ret = -1;
+ goto out;
+ }
+
+ ret = xmlTextWriterStartDocument(*writer, "1.0", "UTF-8", "yes");
+ if (ret < 0) {
+ gf_log ("glusterd", GF_LOG_ERROR, "Error While starting the "
+ "xmlDoc");
+ goto out;
+ }
+
+ ret = xmlTextWriterStartElement(*writer, (xmlChar *)"options");
+ if (ret < 0) {
+ gf_log ("glusterd", GF_LOG_ERROR, "Could not create an "
+ "xmlElemetnt");
+ ret = -1;
+ goto out;
+ }
+
+
+ ret = 0;
+
+ out:
+ gf_log ("glusterd", GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+
+}
+
+static int
+xml_add_volset_element (xmlTextWriterPtr writer, const char *name,
+ const char *def_val, const char *dscrpt)
+{
+
+ int ret = -1;
+
+ GF_ASSERT (name);
+
+ ret = xmlTextWriterStartElement(writer, (xmlChar *) "option");
+ if (ret < 0) {
+ gf_log ("glusterd", GF_LOG_ERROR, "Could not create an "
+ "xmlElemetnt");
+ ret = -1;
+ goto out;
+ }
+
+ ret = xmlTextWriterWriteFormatElement(writer, (xmlChar*)"defaultValue",
+ "%s", def_val);
+ if (ret < 0) {
+ gf_log ("glusterd", GF_LOG_ERROR, "Could not create an "
+ "xmlElemetnt");
+ ret = -1;
+ goto out;
+ }
+
+ ret = xmlTextWriterWriteFormatElement(writer, (xmlChar *)"description",
+ "%s", dscrpt );
+ if (ret < 0) {
+ gf_log ("glusterd", GF_LOG_ERROR, "Could not create an "
+ "xmlElemetnt");
+ ret = -1;
+ goto out;
+ }
+
+ ret = xmlTextWriterWriteFormatElement(writer, (xmlChar *) "name", "%s",
+ name);
+ if (ret < 0) {
+ gf_log ("glusterd", GF_LOG_ERROR, "Could not create an "
+ "xmlElemetnt");
+ ret = -1;
+ goto out;
+ }
+
+ ret = xmlTextWriterEndElement(writer);
+ if (ret < 0) {
+ gf_log ("glusterd", GF_LOG_ERROR, "Could not end an "
+ "xmlElemetnt");
+ ret = -1;
+ goto out;
+ }
+
+ ret = 0;
+ out:
+ gf_log ("glusterd", GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+
+}
+
+#endif
+
+static int
+_get_xlator_opt_key_from_vme ( struct volopt_map_entry *vme, char **key)
+{
+ int ret = 0;
+
+ GF_ASSERT (vme);
+ GF_ASSERT (key);
+
+
+ if (!strcmp (vme->key, AUTH_ALLOW_MAP_KEY))
+ *key = gf_strdup (AUTH_ALLOW_OPT_KEY);
+ else if (!strcmp (vme->key, AUTH_REJECT_MAP_KEY))
+ *key = gf_strdup (AUTH_REJECT_OPT_KEY);
+ else if (!strcmp (vme->key, NFS_DISABLE_MAP_KEY))
+ *key = gf_strdup (NFS_DISABLE_OPT_KEY);
+ else {
+ if (vme->option) {
+ if (vme->option[0] == '!') {
+ *key = vme->option + 1;
+ if (!*key[0])
+ ret = -1;
+ } else {
+ *key = vme->option;
+ }
+ } else {
+ *key = strchr (vme->key, '.');
+ if (*key) {
+ (*key) ++;
+ if (!*key[0])
+ ret = -1;
+ } else {
+ ret = -1;
+ }
+ }
+ }
+ if (ret)
+ gf_log ("glusterd", GF_LOG_ERROR, "Wrong entry found in "
+ "glusterd_volopt_map entry %s", vme->key);
+ else
+ gf_log ("glusterd", GF_LOG_DEBUG, "Returning %d", ret);
+
+ return ret;
+}
+
+static void
+_free_xlator_opt_key (char *key)
+{
+ GF_ASSERT (key);
+
+ if (!strcmp (key, AUTH_ALLOW_OPT_KEY) ||
+ !strcmp (key, AUTH_REJECT_OPT_KEY) ||
+ !strcmp (key, NFS_DISABLE_OPT_KEY))
+ GF_FREE (key);
+
+ return;
+}
+
+int
+glusterd_get_volopt_content (dict_t * ctx, gf_boolean_t xml_out)
+{
+ void *dl_handle = NULL;
+ volume_opt_list_t vol_opt_handle = {{0},};
+ char *key = NULL;
+ struct volopt_map_entry *vme = NULL;
+ int ret = -1;
+ char *def_val = NULL;
+ char *descr = NULL;
+ char output_string[25600] = {0, };
+ char *output = NULL;
+ char tmp_str[2048] = {0, };
+#if (HAVE_LIB_XML)
+ xmlTextWriterPtr writer = NULL;
+ xmlBufferPtr buf = NULL;
+
+ if (xml_out) {
+ ret = init_sethelp_xml_doc (&writer, &buf);
+ if (ret) /*logging done in init_xml_lib*/
+ goto out;
+ }
+#endif
+
+ INIT_LIST_HEAD (&vol_opt_handle.list);
+
+ for (vme = &glusterd_volopt_map[0]; vme->key; vme++) {
+
+ if ((vme->type == NO_DOC) || (vme->type == GLOBAL_NO_DOC))
+ continue;
+
+ if (vme->description) {
+ descr = vme->description;
+ def_val = vme->value;
+ } else {
+ if (_get_xlator_opt_key_from_vme (vme, &key)) {
+ gf_log ("glusterd", GF_LOG_DEBUG, "Failed to "
+ "get %s key from volume option entry",
+ vme->key);
+ goto out; /*Some error while geting key*/
+ }
+
+ ret = xlator_volopt_dynload (vme->voltype,
+ &dl_handle,
+ &vol_opt_handle);
+
+ if (ret) {
+ gf_log ("glusterd", GF_LOG_DEBUG,
+ "xlator_volopt_dynload error(%d)", ret);
+ ret = 0;
+ goto cont;
+ }
+
+ ret = xlator_option_info_list (&vol_opt_handle, key,
+ &def_val, &descr);
+ if (ret) { /*Swallow Error i.e if option not found*/
+ gf_log ("glusterd", GF_LOG_DEBUG,
+ "Failed to get option for %s key", key);
+ ret = 0;
+ goto cont;
+ }
+ }
+
+ if (xml_out) {
+#if (HAVE_LIB_XML)
+ if (xml_add_volset_element (writer,vme->key,
+ def_val, descr)) {
+ ret = -1;
+ goto cont;
+ }
+#else
+ gf_log ("glusterd", GF_LOG_ERROR, "Libxml not present");
+#endif
+ } else {
+ snprintf (tmp_str, sizeof (tmp_str), "Option: %s\nDefault "
+ "Value: %s\nDescription: %s\n\n",
+ vme->key, def_val, descr);
+ strcat (output_string, tmp_str);
+ }
+cont:
+ if (dl_handle) {
+ dlclose (dl_handle);
+ dl_handle = NULL;
+ vol_opt_handle.given_opt = NULL;
+ }
+ if (key) {
+ _free_xlator_opt_key (key);
+ key = NULL;
+ }
+ if (ret)
+ goto out;
+ }
+
+#if (HAVE_LIB_XML)
+ if ((xml_out) &&
+ (ret = end_sethelp_xml_doc (writer)))
+ goto out;
+#else
+ if (xml_out)
+ gf_log ("glusterd", GF_LOG_ERROR, "Libxml not present");
+#endif
+
+ if (!xml_out)
+ output = gf_strdup (output_string);
+ else
+#if (HAVE_LIB_XML)
+ output = gf_strdup ((char *)buf->content);
+#else
+ gf_log ("glusterd", GF_LOG_ERROR, "Libxml not present");
+#endif
+
+ if (NULL == output) {
+ ret = -1;
+ goto out;
+ }
+
+ ret = dict_set_dynstr (ctx, "help-str", output);
+out:
+ gf_log ("glusterd", GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+
+}
+
+static int
+volgen_graph_build_clients (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
+ dict_t *set_dict, void *param)
+{
+ int i = 0;
+ int ret = -1;
+ uint32_t client_type = GF_CLIENT_OTHER;
+ char transt[16] = {0,};
+ char *volname = NULL;
+ char *str = NULL;
+ glusterd_brickinfo_t *brick = NULL;
+ xlator_t *xl = NULL;
+ char *ssl_str = NULL;
+ gf_boolean_t ssl_bool;
+
+ volname = volinfo->volname;
+
+ if (volinfo->brick_count == 0) {
+ gf_log ("", GF_LOG_ERROR,
+ "volume inconsistency: brick count is 0");
+ goto out;
+ }
+
+ if ((volinfo->dist_leaf_count < volinfo->brick_count) &&
+ ((volinfo->brick_count % volinfo->dist_leaf_count) != 0)) {
+ gf_log ("", GF_LOG_ERROR,
+ "volume inconsistency: "
+ "total number of bricks (%d) is not divisible with "
+ "number of bricks per cluster (%d) in a multi-cluster "
+ "setup",
+ volinfo->brick_count, volinfo->dist_leaf_count);
+ goto out;
+ }
+
+ get_transport_type (volinfo, set_dict, transt, _gf_false);
+
+ if (!strcmp (transt, "tcp,rdma"))
+ strcpy (transt, "tcp");
+
+ i = 0;
+ ret = -1;
+ list_for_each_entry (brick, &volinfo->bricks, brick_list) {
+ ret = -1;
+ xl = volgen_graph_add_nolink (graph, "protocol/client",
+ "%s-client-%d", volname, i);
+ if (!xl)
+ goto out;
+ ret = xlator_set_option (xl, "remote-host", brick->hostname);
+ if (ret)
+ goto out;
+ ret = xlator_set_option (xl, "remote-subvolume", brick->path);
+ if (ret)
+ goto out;
+ ret = xlator_set_option (xl, "transport-type", transt);
+ if (ret)
+ goto out;
+
+ ret = dict_get_uint32 (set_dict, "trusted-client",
+ &client_type);
+
+ if (!ret && client_type == GF_CLIENT_TRUSTED) {
+ str = NULL;
+ str = glusterd_auth_get_username (volinfo);
+ if (str) {
+ ret = xlator_set_option (xl, "username",
+ str);
+ if (ret)
+ goto out;
+ }
+
+ str = glusterd_auth_get_password (volinfo);
+ if (str) {
+ ret = xlator_set_option (xl, "password",
+ str);
+ if (ret)
+ goto out;
+ }
+ }
+
+ if (dict_get_str(set_dict,"client.ssl",&ssl_str) == 0) {
+ if (gf_string2boolean(ssl_str,&ssl_bool) == 0) {
+ if (ssl_bool) {
+ ret = xlator_set_option(xl,
+ "transport.socket.ssl-enabled",
+ "true");
+ if (ret) {
+ goto out;
+ }
+ }
+ }
+ }
+
+ i++;
+ }
+
+ if (i != volinfo->brick_count) {
+ gf_log ("", GF_LOG_ERROR,
+ "volume inconsistency: actual number of bricks (%d) "
+ "differs from brick count (%d)", i,
+ volinfo->brick_count);
+
+ ret = -1;
+ goto out;
+ }
+ ret = 0;
+out:
+ return ret;
+}
+
+static int
+volgen_graph_build_clusters (volgen_graph_t *graph,
+ glusterd_volinfo_t *volinfo, char *xl_type,
+ char *xl_namefmt, size_t child_count,
+ size_t sub_count)
+{
+ int i = 0;
+ int j = 0;
+ xlator_t *txl = NULL;
+ xlator_t *xl = NULL;
+ xlator_t *trav = NULL;
+ char *volname = NULL;
+ int ret = -1;
+
+ if (child_count == 0)
+ goto out;
+ volname = volinfo->volname;
+ txl = first_of (graph);
+ for (trav = txl; --child_count; trav = trav->next);
+ for (;; trav = trav->prev) {
+ if ((i % sub_count) == 0) {
+ xl = volgen_graph_add_nolink (graph, xl_type,
+ xl_namefmt, volname, j);
+ if (!xl) {
+ ret = -1;
+ goto out;
+ }
+ j++;
+ }
+
+ ret = volgen_xlator_link (xl, trav);
+ if (ret)
+ goto out;
+
+ if (trav == txl)
+ break;
+
+ i++;
+ }
+
+ ret = j;
+out:
+ return ret;
+}
+
+gf_boolean_t
+_xl_is_client_decommissioned (xlator_t *xl, glusterd_volinfo_t *volinfo)
+{
+ int ret = 0;
+ gf_boolean_t decommissioned = _gf_false;
+ char *hostname = NULL;
+ char *path = NULL;
+
+ GF_ASSERT (!strcmp (xl->type, "protocol/client"));
+ ret = xlator_get_option (xl, "remote-host", &hostname);
+ if (ret) {
+ GF_ASSERT (0);
+ gf_log ("glusterd", GF_LOG_ERROR, "Failed to get remote-host "
+ "from client %s", xl->name);
+ goto out;
+ }
+ ret = xlator_get_option (xl, "remote-subvolume", &path);
+ if (ret) {
+ GF_ASSERT (0);
+ gf_log ("glusterd", GF_LOG_ERROR, "Failed to get remote-host "
+ "from client %s", xl->name);
+ goto out;
+ }
+
+ decommissioned = glusterd_is_brick_decommissioned (volinfo, hostname,
+ path);
+out:
+ return decommissioned;
+}
+
+gf_boolean_t
+_xl_has_decommissioned_clients (xlator_t *xl, glusterd_volinfo_t *volinfo)
+{
+ xlator_list_t *xl_child = NULL;
+ gf_boolean_t decommissioned = _gf_false;
+ xlator_t *cxl = NULL;
+
+ if (!xl)
+ goto out;
+
+ if (!strcmp (xl->type, "protocol/client")) {
+ decommissioned = _xl_is_client_decommissioned (xl, volinfo);
+ goto out;
+ }
+
+ xl_child = xl->children;
+ while (xl_child) {
+ cxl = xl_child->xlator;
+ /* this can go into 2 depths if the volume type
+ is stripe-replicate */
+ decommissioned = _xl_has_decommissioned_clients (cxl, volinfo);
+ if (decommissioned)
+ break;
+
+ xl_child = xl_child->next;
+ }
+out:
+ return decommissioned;
+}
+
+static int
+_graph_get_decommissioned_children (xlator_t *dht, glusterd_volinfo_t *volinfo,
+ char **children)
+{
+ int ret = -1;
+ xlator_list_t *xl_child = NULL;
+ xlator_t *cxl = NULL;
+ gf_boolean_t comma = _gf_false;
+
+ *children = NULL;
+ xl_child = dht->children;
+ while (xl_child) {
+ cxl = xl_child->xlator;
+ if (_xl_has_decommissioned_clients (cxl, volinfo)) {
+ if (!*children) {
+ *children = GF_CALLOC (16 * GF_UNIT_KB, 1,
+ gf_common_mt_char);
+ if (!*children)
+ goto out;
+ }
+
+ if (comma)
+ strcat (*children, ",");
+ strcat (*children, cxl->name);
+ comma = _gf_true;
+ }
+
+ xl_child = xl_child->next;
+ }
+ ret = 0;
+out:
+ return ret;
+}
+
+static int
+volgen_graph_build_dht_cluster (volgen_graph_t *graph,
+ glusterd_volinfo_t *volinfo, size_t child_count)
+{
+ int32_t clusters = 0;
+ int ret = -1;
+ char *decommissioned_children = NULL;
+ xlator_t *dht = NULL;
+ char *voltype = "cluster/distribute";
+
+ /* NUFA and Switch section */
+ if (dict_get_str_boolean (volinfo->dict, "cluster.nufa", 0) &&
+ dict_get_str_boolean (volinfo->dict, "cluster.switch", 0)) {
+ gf_log (THIS->name, GF_LOG_ERROR,
+ "nufa and switch cannot be set together");
+ ret = -1;
+ goto out;
+ }
+
+ /* Check for NUFA volume option, and change the voltype */
+ if (dict_get_str_boolean (volinfo->dict, "cluster.nufa", 0))
+ voltype = "cluster/nufa";
+
+ /* Check for switch volume option, and change the voltype */
+ if (dict_get_str_boolean (volinfo->dict, "cluster.switch", 0))
+ voltype = "cluster/switch";
+
+ clusters = volgen_graph_build_clusters (graph, volinfo,
+ voltype,
+ "%s-dht",
+ child_count,
+ child_count);
+ if (clusters < 0)
+ goto out;
+
+ dht = first_of (graph);
+ ret = _graph_get_decommissioned_children (dht, volinfo,
+ &decommissioned_children);
+ if (ret)
+ goto out;
+ if (decommissioned_children) {
+ ret = xlator_set_option (dht, "decommissioned-bricks",
+ decommissioned_children);
+ if (ret)
+ goto out;
+ }
+ ret = 0;
+out:
+ GF_FREE (decommissioned_children);
+ return ret;
+}
+
+static int
+volume_volgen_graph_build_clusters (volgen_graph_t *graph,
+ glusterd_volinfo_t *volinfo)
+{
+ char *replicate_args[] = {"cluster/replicate",
+ "%s-replicate-%d"};
+ char *stripe_args[] = {"cluster/stripe",
+ "%s-stripe-%d"};
+ int rclusters = 0;
+ int clusters = 0;
+ int dist_count = 0;
+ int ret = -1;
+
+ if (!volinfo->dist_leaf_count)
+ goto out;
+
+ if (volinfo->dist_leaf_count == 1)
+ goto build_distribute;
+
+ /* All other cases, it will have one or the other cluster type */
+ switch (volinfo->type) {
+ case GF_CLUSTER_TYPE_REPLICATE:
+ clusters = volgen_graph_build_clusters (graph, volinfo,
+ replicate_args[0],
+ replicate_args[1],
+ volinfo->brick_count,
+ volinfo->replica_count);
+ if (clusters < 0)
+ goto out;
+ break;
+ case GF_CLUSTER_TYPE_STRIPE:
+ clusters = volgen_graph_build_clusters (graph, volinfo,
+ stripe_args[0],
+ stripe_args[1],
+ volinfo->brick_count,
+ volinfo->stripe_count);
+ if (clusters < 0)
+ goto out;
+ break;
+ case GF_CLUSTER_TYPE_STRIPE_REPLICATE:
+ /* Replicate after the clients, then stripe */
+ if (volinfo->replica_count == 0)
+ goto out;
+ clusters = volgen_graph_build_clusters (graph, volinfo,
+ replicate_args[0],
+ replicate_args[1],
+ volinfo->brick_count,
+ volinfo->replica_count);
+ if (clusters < 0)
+ goto out;
+
+ rclusters = volinfo->brick_count / volinfo->replica_count;
+ GF_ASSERT (rclusters == clusters);
+ clusters = volgen_graph_build_clusters (graph, volinfo,
+ stripe_args[0],
+ stripe_args[1],
+ rclusters,
+ volinfo->stripe_count);
+ if (clusters < 0)
+ goto out;
+ break;
+ default:
+ gf_log ("", GF_LOG_ERROR, "volume inconsistency: "
+ "unrecognized clustering type");
+ goto out;
+ }
+
+build_distribute:
+ dist_count = volinfo->brick_count / volinfo->dist_leaf_count;
+ if (!dist_count) {
+ ret = -1;
+ goto out;
+ }
+
+ ret = volgen_graph_build_dht_cluster (graph, volinfo,
+ dist_count);
+ if (ret == -1)
+ goto out;
+
+ ret = 0;
+out:
+ return ret;
+}
+
+static int client_graph_set_perf_options(volgen_graph_t *graph,
+ glusterd_volinfo_t *volinfo,
+ dict_t *set_dict)
+{
+ data_t *tmp_data = NULL;
+ char *volname = NULL;
+
+ /*
+ * Logic to make sure NFS doesn't have performance translators by
+ * default for a volume
+ */
+ volname = volinfo->volname;
+ tmp_data = dict_get (set_dict, "nfs-volume-file");
+ if (!tmp_data)
+ return volgen_graph_set_options_generic(graph, set_dict,
+ volname,
+ &perfxl_option_handler);
+ else
+ return volgen_graph_set_options_generic(graph, set_dict,
+ volname,
+ &nfsperfxl_option_handler);
+}
+
+static int
+client_graph_builder (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
+ dict_t *set_dict, void *param)
+{
+ int ret = 0;
+ xlator_t *xl = NULL;
+ char *volname = NULL;
+
+ volname = volinfo->volname;
+ ret = volgen_graph_build_clients (graph, volinfo, set_dict, param);
+ if (ret)
+ goto out;
+
+ ret = volume_volgen_graph_build_clusters (graph, volinfo);
+ if (ret == -1)
+ goto out;
+
+ /* Check for compress volume option, and add it to the graph on client side */
+ if (dict_get_str_boolean (set_dict, "features.compress", 0)) {
+ xl = volgen_graph_add (graph, "features/cdc", volname);
+ if (!xl) {
+ ret = -1;
+ goto out;
+ }
+ ret = dict_set_str (set_dict, "compress.mode", "client");
+ if (ret)
+ goto out;
+
+ }
+
+ ret = glusterd_volinfo_get_boolean (volinfo, "features.encryption");
+ if (ret == -1)
+ goto out;
+ if (ret) {
+ xl = volgen_graph_add (graph, "encryption/crypt", volname);
+
+ if (!xl) {
+ ret = -1;
+ goto out;
+ }
+ }
+
+ ret = glusterd_volinfo_get_boolean (volinfo, VKEY_FEATURES_QUOTA);
+ if (ret == -1)
+ goto out;
+ if (ret) {
+ xl = volgen_graph_add (graph, "features/quota", volname);
+
+ if (!xl) {
+ ret = -1;
+ goto out;
+ }
+ }
+
+
+ ret = glusterd_volinfo_get_boolean (volinfo, "features.file-snapshot");
+ if (ret == -1)
+ goto out;
+ if (ret) {
+ xl = volgen_graph_add (graph, "features/qemu-block", volname);
+
+ if (!xl) {
+ ret = -1;
+ goto out;
+ }
+ }
+
+ ret = client_graph_set_perf_options(graph, volinfo, set_dict);
+ if (ret)
+ goto out;
+
+ /* add debug translators depending on the options */
+ ret = check_and_add_debug_xl (graph, set_dict, volname,
+ "client");
+ if (ret)
+ return -1;
+
+ ret = -1;
+ xl = volgen_graph_add_as (graph, "debug/io-stats", volname);
+ if (!xl)
+ goto out;
+
+ ret = volgen_graph_set_options_generic (graph, set_dict, "client",
+ &loglevel_option_handler);
+
+ if (ret)
+ gf_log (THIS->name, GF_LOG_WARNING, "changing client log level"
+ " failed");
+
+ ret = volgen_graph_set_options_generic (graph, set_dict, "client",
+ &sys_loglevel_option_handler);
+ if (ret)
+ gf_log (THIS->name, GF_LOG_WARNING, "changing client syslog "
+ "level failed");
+out:
+ return ret;
+}
+
+
+/* builds a graph for client role , with option overrides in mod_dict */
+static int
+build_client_graph (volgen_graph_t *graph, glusterd_volinfo_t *volinfo,
+ dict_t *mod_dict)
+{
+ return build_graph_generic (graph, volinfo, mod_dict, NULL,
+ &client_graph_builder);
+}
+
+char *gd_shd_options[] = {
+ "!self-heal-daemon",
+ "!heal-timeout",
+ NULL
+};
+
+char*
+gd_get_matching_option (char **options, char *option)
+{
+ while (*options && strcmp (*options, option))
+ options++;
+ return *options;
+}
+
+static int
+shd_option_handler (volgen_graph_t *graph, struct volopt_map_entry *vme,
+ void *param)
+{
+ int ret = 0;
+ struct volopt_map_entry new_vme = {0};
+ char *shd_option = NULL;
+
+ shd_option = gd_get_matching_option (gd_shd_options, vme->option);
+ if ((vme->option[0] == '!') && !shd_option)
+ goto out;
+ new_vme = *vme;
+ if (shd_option) {
+ new_vme.option = shd_option + 1;//option with out '!'
+ }
+
+ ret = no_filter_option_handler (graph, &new_vme, param);
+out:
+ return ret;
+}
+
+static int
+nfs_option_handler (volgen_graph_t *graph,
+ struct volopt_map_entry *vme, void *param)
+{
+ xlator_t *xl = NULL;
+ char *aa = NULL;
+ int ret = 0;
+ glusterd_volinfo_t *volinfo = NULL;
+
+ volinfo = param;
+
+ xl = first_of (graph);
+
+/* if (vme->type == GLOBAL_DOC || vme->type == GLOBAL_NO_DOC) {
+
+ ret = xlator_set_option (xl, vme->key, vme->value);
+ }*/
+ if (!volinfo || (volinfo->volname[0] == '\0'))
+ return 0;
+
+ if (! strcmp (vme->option, "!rpc-auth.addr.*.allow")) {
+ ret = gf_asprintf (&aa, "rpc-auth.addr.%s.allow",
+ volinfo->volname);
+
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+
+ if (ret)
+ return -1;
+ }
+
+ if (! strcmp (vme->option, "!rpc-auth.addr.*.reject")) {
+ ret = gf_asprintf (&aa, "rpc-auth.addr.%s.reject",
+ volinfo->volname);
+
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+
+ if (ret)
+ return -1;
+ }
+
+ if (! strcmp (vme->option, "!rpc-auth.auth-unix.*")) {
+ ret = gf_asprintf (&aa, "rpc-auth.auth-unix.%s",
+ volinfo->volname);
+
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+
+ if (ret)
+ return -1;
+ }
+ if (! strcmp (vme->option, "!rpc-auth.auth-null.*")) {
+ ret = gf_asprintf (&aa, "rpc-auth.auth-null.%s",
+ volinfo->volname);
+
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+
+ if (ret)
+ return -1;
+ }
+
+ if (! strcmp (vme->option, "!nfs3.*.trusted-sync")) {
+ ret = gf_asprintf (&aa, "nfs3.%s.trusted-sync",
+ volinfo->volname);
+
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+
+ if (ret)
+ return -1;
+ }
+
+ if (! strcmp (vme->option, "!nfs3.*.trusted-write")) {
+ ret = gf_asprintf (&aa, "nfs3.%s.trusted-write",
+ volinfo->volname);
+
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+
+ if (ret)
+ return -1;
+ }
+
+ if (! strcmp (vme->option, "!nfs3.*.volume-access")) {
+ ret = gf_asprintf (&aa, "nfs3.%s.volume-access",
+ volinfo->volname);
+
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+
+ if (ret)
+ return -1;
+ }
+
+ if (! strcmp (vme->option, "!nfs3.*.export-dir")) {
+ ret = gf_asprintf (&aa, "nfs3.%s.export-dir",
+ volinfo->volname);
+
+ if (ret != -1) {
+ ret = gf_canonicalize_path (vme->value);
+ if (ret)
+ return -1;
+
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+
+ if (ret)
+ return -1;
+ }
+
+
+
+ if (! strcmp (vme->option, "!rpc-auth.ports.*.insecure")) {
+ ret = gf_asprintf (&aa, "rpc-auth.ports.%s.insecure",
+ volinfo->volname);
+
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+
+ if (ret)
+ return -1;
+ }
+
+
+ if (! strcmp (vme->option, "!nfs-disable")) {
+ ret = gf_asprintf (&aa, "nfs.%s.disable",
+ volinfo->volname);
+
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+
+ if (ret)
+ return -1;
+ }
+
+ if ( (strcmp (vme->voltype, "nfs/server") == 0) &&
+ (vme->option && vme->option[0]!='!') ) {
+ ret = xlator_set_option (xl, vme->option, vme->value);
+ if (ret)
+ return -1;
+ }
+
+
+ /*key = strchr (vme->key, '.') + 1;
+
+ for (trav = xl->children; trav; trav = trav->next) {
+ ret = gf_asprintf (&aa, "auth.addr.%s.%s", trav->xlator->name,
+ key);
+ if (ret != -1) {
+ ret = xlator_set_option (xl, aa, vme->value);
+ GF_FREE (aa);
+ }
+ if (ret)
+ return -1;
+ }*/
+
+ return 0;
+}
+
+static int
+volgen_graph_set_iam_shd (volgen_graph_t *graph)
+{
+ xlator_t *trav;
+ int ret = 0;
+
+ for (trav = first_of (graph); trav; trav = trav->next) {
+ if (strcmp (trav->type, "cluster/replicate") != 0)
+ continue;
+
+ ret = xlator_set_option (trav, "iam-self-heal-daemon", "yes");
+ if (ret)
+ break;
+ }
+ return ret;
+}
+
+static int
+build_shd_graph (volgen_graph_t *graph, dict_t *mod_dict)
+{
+ volgen_graph_t cgraph = {0};
+ glusterd_volinfo_t *voliter = NULL;
+ xlator_t *this = NULL;
+ glusterd_conf_t *priv = NULL;
+ dict_t *set_dict = NULL;
+ int ret = 0;
+ gf_boolean_t valid_config = _gf_false;
+ xlator_t *iostxl = NULL;
+ int rclusters = 0;
+ int replica_count = 0;
+ gf_boolean_t graph_check = _gf_false;
+
+ this = THIS;
+ priv = this->private;
+
+ set_dict = dict_new ();
+ if (!set_dict) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ graph_check = dict_get_str_boolean (mod_dict, "graph-check", 0);
+ iostxl = volgen_graph_add_as (graph, "debug/io-stats", "glustershd");
+ if (!iostxl) {
+ ret = -1;
+ goto out;
+ }
+
+ list_for_each_entry (voliter, &priv->volumes, vol_list) {
+ if (!graph_check &&
+ (voliter->status != GLUSTERD_STATUS_STARTED))
+ continue;
+
+ if (!glusterd_is_volume_replicate (voliter))
+ continue;
+
+ replica_count = voliter->replica_count;
+
+ valid_config = _gf_true;
+
+ ret = dict_set_str (set_dict, "cluster.self-heal-daemon", "on");
+ if (ret)
+ goto out;
+
+ ret = dict_set_uint32 (set_dict, "trusted-client",
+ GF_CLIENT_TRUSTED);
+ if (ret)
+ goto out;
+
+ dict_copy (voliter->dict, set_dict);
+ if (mod_dict)
+ dict_copy (mod_dict, set_dict);
+
+ memset (&cgraph, 0, sizeof (cgraph));
+ ret = volgen_graph_build_clients (&cgraph, voliter, set_dict,
+ NULL);
+ if (ret)
+ goto out;
+
+ rclusters = volgen_graph_build_clusters (&cgraph, voliter,
+ "cluster/replicate",
+ "%s-replicate-%d",
+ voliter->brick_count,
+ replica_count);
+ if (rclusters < 0) {
+ ret = -1;
+ goto out;
+ }
+
+ ret = volgen_graph_set_options_generic (&cgraph, set_dict, voliter,
+ shd_option_handler);
+ if (ret)
+ goto out;
+
+ ret = volgen_graph_set_iam_shd (&cgraph);
+ if (ret)
+ goto out;
+
+ ret = volgen_graph_merge_sub (graph, &cgraph, rclusters);
+ if (ret)
+ goto out;
+
+ ret = volgen_graph_set_options_generic (graph, set_dict,
+ "client",
+ &loglevel_option_handler);
+
+ if (ret)
+ gf_log (THIS->name, GF_LOG_WARNING, "changing loglevel "
+ "of self-heal daemon failed");
+
+ ret = volgen_graph_set_options_generic (graph, set_dict,
+ "client",
+ &sys_loglevel_option_handler);
+ if (ret)
+ gf_log (THIS->name, GF_LOG_WARNING, "changing syslog "
+ "level of self-heal daemon failed");
+
+ ret = dict_reset (set_dict);
+ if (ret)
+ goto out;
+ }
+out:
+ if (set_dict)
+ dict_unref (set_dict);
+ if (!valid_config)
+ ret = -EINVAL;
+ return ret;
+}
+
+/* builds a graph for nfs server role, with option overrides in mod_dict */
+static int
+build_nfs_graph (volgen_graph_t *graph, dict_t *mod_dict)
+{
+ volgen_graph_t cgraph = {0,};
+ glusterd_volinfo_t *voliter = NULL;
+ xlator_t *this = NULL;
+ glusterd_conf_t *priv = NULL;
+ dict_t *set_dict = NULL;
+ xlator_t *nfsxl = NULL;
+ char *skey = NULL;
+ int ret = 0;
+ char nfs_xprt[16] = {0,};
+ char *volname = NULL;
+ data_t *data = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ priv = this->private;
+ GF_ASSERT (priv);
+
+ set_dict = dict_new ();
+ if (!set_dict) {
+ gf_log ("", GF_LOG_ERROR, "Out of memory");
+ return -1;
+ }
+
+ nfsxl = volgen_graph_add_as (graph, "nfs/server", "nfs-server");
+ if (!nfsxl) {
+ ret = -1;
+ goto out;
+ }
+ ret = xlator_set_option (nfsxl, "nfs.dynamic-volumes", "on");
+ if (ret)
+ goto out;
+
+ ret = xlator_set_option (nfsxl, "nfs.nlm", "on");
+ if (ret)
+ goto out;
+
+ ret = xlator_set_option (nfsxl, "nfs.drc", "on");
+ if (ret)
+ goto out;
+
+ list_for_each_entry (voliter, &priv->volumes, vol_list) {
+ if (voliter->status != GLUSTERD_STATUS_STARTED)
+ continue;
+
+ if (dict_get_str_boolean (voliter->dict, "nfs.disable", 0))
+ continue;
+
+ ret = gf_asprintf (&skey, "rpc-auth.addr.%s.allow",
+ voliter->volname);
+ if (ret == -1) {
+ gf_log ("", GF_LOG_ERROR, "Out of memory");
+ goto out;
+ }
+ ret = xlator_set_option (nfsxl, skey, "*");
+ GF_FREE (skey);
+ if (ret)
+ goto out;
+
+ ret = gf_asprintf (&skey, "nfs3.%s.volume-id",
+ voliter->volname);
+ if (ret == -1) {
+ gf_log ("", GF_LOG_ERROR, "Out of memory");
+ goto out;
+ }
+ ret = xlator_set_option (nfsxl, skey, uuid_utoa (voliter->volume_id));
+ GF_FREE (skey);
+ if (ret)
+ goto out;
+
+ /* If both RDMA and TCP are the transport_type, use RDMA
+ for NFS client protocols */
+ memset (&cgraph, 0, sizeof (cgraph));
+ if (mod_dict)
+ get_transport_type (voliter, mod_dict, nfs_xprt, _gf_true);
+ else
+ get_transport_type (voliter, voliter->dict, nfs_xprt, _gf_true);
+
+ ret = dict_set_str (set_dict, "performance.stat-prefetch", "off");
+ if (ret)
+ goto out;
+
+ ret = dict_set_str (set_dict, "performance.client-io-threads",
+ "off");
+ if (ret)
+ goto out;
+
+ ret = dict_set_str (set_dict, "client-transport-type",
+ nfs_xprt);
+ if (ret)
+ goto out;
+
+ ret = dict_set_uint32 (set_dict, "trusted-client",
+ GF_CLIENT_TRUSTED);
+ if (ret)
+ goto out;
+
+ ret = dict_set_str (set_dict, "nfs-volume-file", "yes");
+ if (ret)
+ goto out;
+
+ if (mod_dict && (data = dict_get (mod_dict, "volume-name"))) {
+ volname = data->data;
+ if (strcmp (volname, voliter->volname) == 0)
+ dict_copy (mod_dict, set_dict);
+ }
+
+ ret = build_client_graph (&cgraph, voliter, set_dict);
+ if (ret)
+ goto out;
+
+ if (mod_dict) {
+ dict_copy (mod_dict, set_dict);
+ ret = volgen_graph_set_options_generic (&cgraph, set_dict, voliter,
+ basic_option_handler);
+ } else {
+ ret = volgen_graph_set_options_generic (&cgraph, voliter->dict, voliter,
+ basic_option_handler);
+ }
+
+ if (ret)
+ goto out;
+
+ ret = volgen_graph_merge_sub (graph, &cgraph, 1);
+ if (ret)
+ goto out;
+ ret = dict_reset (set_dict);
+ if (ret)
+ goto out;
+ }
+
+ list_for_each_entry (voliter, &priv->volumes, vol_list) {
+
+ if (mod_dict) {
+ ret = volgen_graph_set_options_generic (graph, mod_dict, voliter,
+ nfs_option_handler);
+ } else {
+ ret = volgen_graph_set_options_generic (graph, voliter->dict, voliter,
+ nfs_option_handler);
+ }
+
+ if (ret)
+ gf_log ("glusterd", GF_LOG_WARNING, "Could not set "
+ "vol-options for the volume %s", voliter->volname);
+ }
+
+ out:
+ gf_log ("glusterd", GF_LOG_DEBUG, "Returning %d", ret);
+ dict_destroy (set_dict);
+
+ return ret;
+}
+
+
+
+
+/****************************
+ *
+ * Volume generation interface
+ *
+ ****************************/
+
+
+static void
+get_brick_filepath (char *filename, glusterd_volinfo_t *volinfo,
+ glusterd_brickinfo_t *brickinfo)
+{
+ char path[PATH_MAX] = {0,};
+ char brick[PATH_MAX] = {0,};
+ glusterd_conf_t *priv = NULL;
+
+ priv = THIS->private;
+
+ GLUSTERD_REMOVE_SLASH_FROM_PATH (brickinfo->path, brick);
+ GLUSTERD_GET_VOLUME_DIR (path, volinfo, priv);
+
+ snprintf (filename, PATH_MAX, "%s/%s.%s.%s.vol",
+ path, volinfo->volname,
+ brickinfo->hostname,
+ brick);
+}
+
+gf_boolean_t
+glusterd_is_valid_volfpath (char *volname, char *brick)
+{
+ char volfpath[PATH_MAX] = {0,};
+ glusterd_brickinfo_t *brickinfo = NULL;
+ glusterd_volinfo_t *volinfo = NULL;
+ int32_t ret = 0;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+
+ ret = glusterd_brickinfo_new_from_brick (brick, &brickinfo);
+ if (ret) {
+ gf_log (this->name, GF_LOG_WARNING, "Failed to create brickinfo"
+ " for brick %s", brick );
+ ret = 0;
+ goto out;
+ }
+ ret = glusterd_volinfo_new (&volinfo);
+ if (ret) {
+ gf_log (this->name, GF_LOG_WARNING, "Failed to create volinfo");
+ ret = 0;
+ goto out;
+ }
+ strncpy (volinfo->volname, volname, sizeof (volinfo->volname));
+ get_brick_filepath (volfpath, volinfo, brickinfo);
+
+ ret = (strlen (volfpath) < _POSIX_PATH_MAX);
+
+out:
+ if (brickinfo)
+ glusterd_brickinfo_delete (brickinfo);
+ if (volinfo)
+ glusterd_volinfo_delete (volinfo);
+ return ret;
+}
+
+static int
+glusterd_generate_brick_volfile (glusterd_volinfo_t *volinfo,
+ glusterd_brickinfo_t *brickinfo)
+{
+ volgen_graph_t graph = {0,};
+ char filename[PATH_MAX] = {0,};
+ int ret = -1;
+
+ GF_ASSERT (volinfo);
+ GF_ASSERT (brickinfo);
+
+ get_brick_filepath (filename, volinfo, brickinfo);
+
+ ret = build_server_graph (&graph, volinfo, NULL, brickinfo);
+ if (!ret)
+ ret = volgen_write_volfile (&graph, filename);
+
+ volgen_graph_free (&graph);
+
+ return ret;
+}
+
+static void
+get_vol_tstamp_file (char *filename, glusterd_volinfo_t *volinfo)
+{
+ glusterd_conf_t *priv = NULL;
+
+ priv = THIS->private;
+
+ GLUSTERD_GET_VOLUME_DIR (filename, volinfo, priv);
+ strncat (filename, "/marker.tstamp",
+ PATH_MAX - strlen(filename) - 1);
+}
+
+int
+generate_brick_volfiles (glusterd_volinfo_t *volinfo)
+{
+ glusterd_brickinfo_t *brickinfo = NULL;
+ char tstamp_file[PATH_MAX] = {0,};
+ int ret = -1;
+
+ ret = glusterd_volinfo_get_boolean (volinfo, VKEY_MARKER_XTIME);
+ if (ret == -1)
+ return -1;
+
+ get_vol_tstamp_file (tstamp_file, volinfo);
+
+ if (ret) {
+ ret = open (tstamp_file, O_WRONLY|O_CREAT|O_EXCL, 0600);
+ if (ret == -1 && errno == EEXIST) {
+ gf_log ("", GF_LOG_DEBUG, "timestamp file exist");
+ ret = -2;
+ }
+ if (ret == -1) {
+ gf_log ("", GF_LOG_ERROR, "failed to create %s (%s)",
+ tstamp_file, strerror (errno));
+ return -1;
+ }
+ if (ret >= 0)
+ close (ret);
+ } else {
+ ret = unlink (tstamp_file);
+ if (ret == -1 && errno == ENOENT)
+ ret = 0;
+ if (ret == -1) {
+ gf_log ("", GF_LOG_ERROR, "failed to unlink %s (%s)",
+ tstamp_file, strerror (errno));
+ return -1;
+ }
+ }
+
+ list_for_each_entry (brickinfo, &volinfo->bricks, brick_list) {
+ gf_log ("", GF_LOG_DEBUG,
+ "Found a brick - %s:%s", brickinfo->hostname,
+ brickinfo->path);
+
+ ret = glusterd_generate_brick_volfile (volinfo, brickinfo);
+ if (ret)
+ goto out;
+
+ }
+
+ ret = 0;
+
+out:
+ gf_log ("", GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+}
+
+static int
+generate_single_transport_client_volfile (glusterd_volinfo_t *volinfo,
+ char *filepath, dict_t *dict)
+{
+ volgen_graph_t graph = {0,};
+ int ret = -1;
+
+ ret = build_client_graph (&graph, volinfo, dict);
+ if (!ret)
+ ret = volgen_write_volfile (&graph, filepath);
+
+ volgen_graph_free (&graph);
+
+ return ret;
+}
+
+static void
+enumerate_transport_reqs (gf_transport_type type, char **types)
+{
+ switch (type) {
+ case GF_TRANSPORT_TCP:
+ types[0] = "tcp";
+ break;
+ case GF_TRANSPORT_RDMA:
+ types[0] = "rdma";
+ break;
+ case GF_TRANSPORT_BOTH_TCP_RDMA:
+ types[0] = "tcp";
+ types[1] = "rdma";
+ break;
+ }
+}
+
+int
+generate_client_volfiles (glusterd_volinfo_t *volinfo,
+ glusterd_client_type_t client_type)
+{
+ char filepath[PATH_MAX] = {0,};
+ int ret = -1;
+ char *types[] = {NULL, NULL, NULL};
+ int i = 0;
+ dict_t *dict = NULL;
+ gf_transport_type type = GF_TRANSPORT_TCP;
+
+ 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", client_type);
+ if (ret)
+ goto out;
+
+ if (client_type == GF_CLIENT_TRUSTED) {
+ glusterd_get_trusted_client_filepath (filepath,
+ volinfo,
+ type);
+ } else {
+ glusterd_get_client_filepath (filepath,
+ volinfo,
+ type);
+ }
+
+ ret = generate_single_transport_client_volfile (volinfo,
+ filepath,
+ dict);
+ if (ret)
+ goto out;
+ }
+out:
+ if (dict)
+ dict_unref (dict);
+ return ret;
+}
+
+int
+glusterd_create_rb_volfiles (glusterd_volinfo_t *volinfo,
+ glusterd_brickinfo_t *brickinfo)
+{
+ int ret = -1;
+
+ ret = glusterd_generate_brick_volfile (volinfo, brickinfo);
+ if (!ret)
+ ret = generate_client_volfiles (volinfo, GF_CLIENT_TRUSTED);
+ if (!ret)
+ ret = glusterd_fetchspec_notify (THIS);
+
+ return ret;
+}
+
+int
+glusterd_create_volfiles_and_notify_services (glusterd_volinfo_t *volinfo)
+{
+ int ret = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+
+ ret = generate_brick_volfiles (volinfo);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Could not generate volfiles for bricks");
+ goto out;
+ }
+
+ ret = generate_client_volfiles (volinfo, GF_CLIENT_TRUSTED);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Could not generate trusted client volfiles");
+ goto out;
+ }
+
+ ret = generate_client_volfiles (volinfo, GF_CLIENT_OTHER);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Could not generate client volfiles");
+ goto out;
+ }
+
+ ret = glusterd_fetchspec_notify (this);
+
+out:
+ return ret;
+}
+
+int
+glusterd_create_global_volfile (int (*builder) (volgen_graph_t *graph,
+ dict_t *set_dict),
+ char *filepath, dict_t *mod_dict)
+{
+ volgen_graph_t graph = {0,};
+ int ret = -1;
+
+ ret = builder (&graph, mod_dict);
+ if (!ret)
+ ret = volgen_write_volfile (&graph, filepath);
+
+ volgen_graph_free (&graph);
+
+ return ret;
+}
+
+int
+glusterd_create_nfs_volfile ()
+{
+ char filepath[PATH_MAX] = {0,};
+ glusterd_conf_t *conf = THIS->private;
+
+ glusterd_get_nodesvc_volfile ("nfs", conf->workdir,
+ filepath, sizeof (filepath));
+ return glusterd_create_global_volfile (build_nfs_graph,
+ filepath, NULL);
+}
+
+int
+glusterd_create_shd_volfile ()
+{
+ char filepath[PATH_MAX] = {0,};
+ int ret = -1;
+ glusterd_conf_t *conf = THIS->private;
+ dict_t *mod_dict = NULL;
+
+ mod_dict = dict_new ();
+ if (!mod_dict)
+ goto out;
+
+ ret = dict_set_uint32 (mod_dict, "cluster.background-self-heal-count", 0);
+ if (ret)
+ goto out;
+
+ ret = dict_set_str (mod_dict, "cluster.data-self-heal", "on");
+ if (ret)
+ goto out;
+
+ ret = dict_set_str (mod_dict, "cluster.metadata-self-heal", "on");
+ if (ret)
+ goto out;
+
+ ret = dict_set_str (mod_dict, "cluster.entry-self-heal", "on");
+ if (ret)
+ goto out;
+
+ glusterd_get_nodesvc_volfile ("glustershd", conf->workdir,
+ filepath, sizeof (filepath));
+ ret = glusterd_create_global_volfile (build_shd_graph, filepath,
+ mod_dict);
+out:
+ if (mod_dict)
+ dict_unref (mod_dict);
+ return ret;
+}
+
+int
+glusterd_check_nfs_topology_identical (gf_boolean_t *identical)
+{
+ char nfsvol[PATH_MAX] = {0,};
+ char tmpnfsvol[PATH_MAX] = {0,};
+ glusterd_conf_t *conf = NULL;
+ xlator_t *this = THIS;
+ int ret = -1;
+ int tmpclean = 0;
+ int tmpfd = -1;
+
+ if ((!identical) || (!this) || (!this->private))
+ goto out;
+
+ conf = (glusterd_conf_t *) this->private;
+
+ /* Fetch the original NFS volfile */
+ glusterd_get_nodesvc_volfile ("nfs", conf->workdir,
+ nfsvol, sizeof (nfsvol));
+
+ /* Create the temporary NFS volfile */
+ snprintf (tmpnfsvol, sizeof (tmpnfsvol), "/tmp/gnfs-XXXXXX");
+ tmpfd = mkstemp (tmpnfsvol);
+ if (tmpfd < 0) {
+ gf_log (this->name, GF_LOG_WARNING,
+ "Unable to create temp file %s: (%s)",
+ tmpnfsvol, strerror (errno));
+ goto out;
+ }
+
+ tmpclean = 1; /* SET the flag to unlink() tmpfile */
+
+ ret = glusterd_create_global_volfile (build_nfs_graph,
+ tmpnfsvol, NULL);
+ if (ret)
+ goto out;
+
+ /* Compare the topology of volfiles */
+ ret = glusterd_check_topology_identical (nfsvol, tmpnfsvol,
+ identical);
+out:
+ if (tmpfd >= 0)
+ close (tmpfd);
+ if (tmpclean)
+ unlink (tmpnfsvol);
+ return ret;
+}
+
+int
+glusterd_check_nfs_volfile_identical (gf_boolean_t *identical)
+{
+ char nfsvol[PATH_MAX] = {0,};
+ char tmpnfsvol[PATH_MAX] = {0,};
+ glusterd_conf_t *conf = NULL;
+ xlator_t *this = NULL;
+ int ret = -1;
+ int need_unlink = 0;
+ int tmp_fd = -1;
+
+ this = THIS;
+
+ GF_ASSERT (this);
+ GF_ASSERT (identical);
+
+ conf = this->private;
+
+ glusterd_get_nodesvc_volfile ("nfs", conf->workdir,
+ nfsvol, sizeof (nfsvol));
+
+ snprintf (tmpnfsvol, sizeof (tmpnfsvol), "/tmp/gnfs-XXXXXX");
+
+ tmp_fd = mkstemp (tmpnfsvol);
+ if (tmp_fd < 0) {
+ gf_log ("", GF_LOG_WARNING, "Unable to create temp file %s: "
+ "(%s)", tmpnfsvol, strerror (errno));
+ goto out;
+ }
+
+ need_unlink = 1;
+
+ ret = glusterd_create_global_volfile (build_nfs_graph,
+ tmpnfsvol, NULL);
+ if (ret)
+ goto out;
+
+ ret = glusterd_check_files_identical (nfsvol, tmpnfsvol,
+ identical);
+ if (ret)
+ goto out;
+
+out:
+ if (need_unlink)
+ unlink (tmpnfsvol);
+
+ if (tmp_fd >= 0)
+ close (tmp_fd);
+
+ return ret;
+}
+
+int
+glusterd_delete_volfile (glusterd_volinfo_t *volinfo,
+ glusterd_brickinfo_t *brickinfo)
+{
+ int ret = 0;
+ char filename[PATH_MAX] = {0,};
+
+ GF_ASSERT (volinfo);
+ GF_ASSERT (brickinfo);
+
+ get_brick_filepath (filename, volinfo, brickinfo);
+ ret = unlink (filename);
+ if (ret)
+ gf_log ("glusterd", GF_LOG_ERROR, "failed to delete file: %s, "
+ "reason: %s", filename, strerror (errno));
+ return ret;
+}
+
+int
+validate_shdopts (glusterd_volinfo_t *volinfo,
+ dict_t *val_dict,
+ char **op_errstr)
+{
+ volgen_graph_t graph = {0,};
+ int ret = -1;
+
+ graph.errstr = op_errstr;
+
+ if (!glusterd_is_volume_replicate (volinfo)) {
+ ret = 0;
+ goto out;
+ }
+ ret = dict_set_str (val_dict, "graph-check", "on");
+ if (ret)
+ goto out;
+ ret = build_shd_graph (&graph, val_dict);
+ if (!ret)
+ ret = graph_reconf_validateopt (&graph.graph, op_errstr);
+
+ volgen_graph_free (&graph);
+
+ gf_log ("glusterd", GF_LOG_DEBUG, "Returning %d", ret);
+out:
+ dict_del (val_dict, "graph-check");
+ return ret;
+}
+
+int
+validate_nfsopts (glusterd_volinfo_t *volinfo,
+ dict_t *val_dict,
+ char **op_errstr)
+{
+ volgen_graph_t graph = {0,};
+ int ret = -1;
+ char transport_type[16] = {0,};
+ char *tt = NULL;
+ char err_str[4096] = {0,};
+ xlator_t *this = THIS;
+
+ GF_ASSERT (this);
+
+ graph.errstr = op_errstr;
+
+ get_vol_transport_type (volinfo, transport_type);
+ ret = dict_get_str (val_dict, "nfs.transport-type", &tt);
+ if (!ret) {
+ if (volinfo->transport_type != GF_TRANSPORT_BOTH_TCP_RDMA) {
+ snprintf (err_str, sizeof (err_str), "Changing nfs "
+ "transport type is allowed only for volumes "
+ "of transport type tcp,rdma");
+ gf_log (this->name, GF_LOG_ERROR, "%s", err_str);
+ *op_errstr = gf_strdup (err_str);
+ ret = -1;
+ goto out;
+ }
+ if (strcmp (tt,"tcp") && strcmp (tt,"rdma")) {
+ snprintf (err_str, sizeof (err_str), "wrong transport "
+ "type %s", tt);
+ *op_errstr = gf_strdup (err_str);
+ ret = -1;
+ goto out;
+ }
+ }
+
+ ret = dict_set_str (val_dict, "volume-name", volinfo->volname);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to set volume name");
+ goto out;
+ }
+
+ ret = build_nfs_graph (&graph, val_dict);
+ if (!ret)
+ ret = graph_reconf_validateopt (&graph.graph, op_errstr);
+
+ volgen_graph_free (&graph);
+
+out:
+ if (dict_get (val_dict, "volume-name"))
+ dict_del (val_dict, "volume-name");
+ gf_log (this->name, GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+}
+
+
+int
+validate_clientopts (glusterd_volinfo_t *volinfo,
+ dict_t *val_dict,
+ char **op_errstr)
+{
+ volgen_graph_t graph = {0,};
+ int ret = -1;
+
+ GF_ASSERT (volinfo);
+
+ graph.errstr = op_errstr;
+
+ ret = build_client_graph (&graph, volinfo, val_dict);
+ if (!ret)
+ ret = graph_reconf_validateopt (&graph.graph, op_errstr);
+
+ volgen_graph_free (&graph);
+
+ gf_log ("", GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+}
+
+int
+validate_brickopts (glusterd_volinfo_t *volinfo,
+ glusterd_brickinfo_t *brickinfo,
+ dict_t *val_dict,
+ char **op_errstr)
+{
+ volgen_graph_t graph = {0,};
+ int ret = -1;
+
+ GF_ASSERT (volinfo);
+
+ graph.errstr = op_errstr;
+
+ ret = build_server_graph (&graph, volinfo, val_dict, brickinfo);
+ if (!ret)
+ ret = graph_reconf_validateopt (&graph.graph, op_errstr);
+
+ volgen_graph_free (&graph);
+
+ gf_log ("", GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+}
+
+int
+glusterd_validate_brickreconf (glusterd_volinfo_t *volinfo,
+ dict_t *val_dict,
+ char **op_errstr)
+{
+ glusterd_brickinfo_t *brickinfo = NULL;
+ int ret = -1;
+
+ list_for_each_entry (brickinfo, &volinfo->bricks, brick_list) {
+ gf_log ("", GF_LOG_DEBUG,
+ "Validating %s", brickinfo->hostname);
+
+ ret = validate_brickopts (volinfo, brickinfo, val_dict,
+ op_errstr);
+ if (ret)
+ goto out;
+ }
+
+ ret = 0;
+
+out:
+ return ret;
+}
+
+static int
+_check_globalopt (dict_t *this, char *key, data_t *value, void *ret_val)
+{
+ int *ret = NULL;
+
+ ret = ret_val;
+ if (*ret)
+ return 0;
+ if (!glusterd_check_globaloption (key))
+ *ret = 1;
+
+ return 0;
+}
+
+int
+glusterd_validate_globalopts (glusterd_volinfo_t *volinfo,
+ dict_t *val_dict, char **op_errstr)
+{
+ int ret = 0;
+
+ dict_foreach (val_dict, _check_globalopt, &ret);
+ if (ret) {
+ *op_errstr = gf_strdup ( "option specified is not a global option");
+ return -1;
+ }
+ ret = glusterd_validate_brickreconf (volinfo, val_dict, op_errstr);
+
+ if (ret) {
+ gf_log ("", GF_LOG_DEBUG,
+ "Could not Validate bricks");
+ goto out;
+ }
+
+ ret = validate_clientopts (volinfo, val_dict, op_errstr);
+ if (ret) {
+ gf_log ("", GF_LOG_DEBUG,
+ "Could not Validate client");
+ goto out;
+ }
+
+ ret = validate_nfsopts (volinfo, val_dict, op_errstr);
+ if (ret) {
+ gf_log ("", GF_LOG_DEBUG, "Could not Validate nfs");
+ goto out;
+ }
+
+ ret = validate_shdopts (volinfo, val_dict, op_errstr);
+ if (ret) {
+ gf_log ("", GF_LOG_DEBUG, "Could not Validate self-heald");
+ goto out;
+ }
+
+out:
+ gf_log ("", GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+}
+
+static int
+_check_localopt (dict_t *this, char *key, data_t *value, void *ret_val)
+{
+ int *ret = NULL;
+
+ ret = ret_val;
+ if (*ret)
+ return 0;
+ if (!glusterd_check_localoption (key))
+ *ret = 1;
+
+ return 0;
+}
+
+int
+glusterd_validate_reconfopts (glusterd_volinfo_t *volinfo, dict_t *val_dict,
+ char **op_errstr)
+{
+ int ret = 0;
+
+ dict_foreach (val_dict, _check_localopt, &ret);
+ if (ret) {
+ *op_errstr = gf_strdup ( "option specified is not a local option");
+ return -1;
+ }
+ ret = glusterd_validate_brickreconf (volinfo, val_dict, op_errstr);
+
+ if (ret) {
+ gf_log ("", GF_LOG_DEBUG,
+ "Could not Validate bricks");
+ goto out;
+ }
+
+ ret = validate_clientopts (volinfo, val_dict, op_errstr);
+ if (ret) {
+ gf_log ("", GF_LOG_DEBUG,
+ "Could not Validate client");
+ goto out;
+ }
+
+ ret = validate_nfsopts (volinfo, val_dict, op_errstr);
+ if (ret) {
+ gf_log ("", GF_LOG_DEBUG, "Could not Validate nfs");
+ goto out;
+ }
+
+
+ ret = validate_shdopts (volinfo, val_dict, op_errstr);
+ if (ret) {
+ gf_log ("", GF_LOG_DEBUG, "Could not Validate self-heald");
+ goto out;
+ }
+
+
+out:
+ gf_log ("", GF_LOG_DEBUG, "Returning %d", ret);
+ return ret;
+}
+
+static struct volopt_map_entry *
+_gd_get_vmep (char *key) {
+ char *completion = NULL;
+ struct volopt_map_entry *vmep = NULL;
+ int ret = 0;
+
+ COMPLETE_OPTION ((char *)key, completion, ret);
+ for (vmep = glusterd_volopt_map; vmep->key; vmep++) {
+ if (strcmp (vmep->key, key) == 0)
+ return vmep;
+ }
+
+ return NULL;
+}
+
+uint32_t
+glusterd_get_op_version_for_key (char *key)
+{
+ struct volopt_map_entry *vmep = NULL;
+
+ GF_ASSERT (key);
+
+ vmep = _gd_get_vmep (key);
+ if (vmep)
+ return vmep->op_version;
+
+ return 0;
+}
+
+gf_boolean_t
+gd_is_client_option (char *key)
+{
+ struct volopt_map_entry *vmep = NULL;
+
+ GF_ASSERT (key);
+
+ vmep = _gd_get_vmep (key);
+ if (vmep && (vmep->flags & OPT_FLAG_CLIENT_OPT))
+ return _gf_true;
+
+ return _gf_false;
+}
+
+gf_boolean_t
+gd_is_xlator_option (char *key)
+{
+ struct volopt_map_entry *vmep = NULL;
+
+ GF_ASSERT (key);
+
+ vmep = _gd_get_vmep (key);
+ if (vmep && (vmep->flags & OPT_FLAG_XLATOR_OPT))
+ return _gf_true;
+
+ return _gf_false;
+}
+
+volume_option_type_t
+_gd_get_option_type (char *key)
+{
+ struct volopt_map_entry *vmep = NULL;
+ void *dl_handle = NULL;
+ volume_opt_list_t vol_opt_list = {{0},};
+ int ret = -1;
+ volume_option_t *opt = NULL;
+ char *xlopt_key = NULL;
+ volume_option_type_t opt_type = GF_OPTION_TYPE_MAX;
+
+ GF_ASSERT (key);
+
+ vmep = _gd_get_vmep (key);
+
+ if (vmep) {
+ INIT_LIST_HEAD (&vol_opt_list.list);
+ ret = xlator_volopt_dynload (vmep->voltype, &dl_handle,
+ &vol_opt_list);
+ if (ret)
+ goto out;
+
+ if (_get_xlator_opt_key_from_vme (vmep, &xlopt_key))
+ goto out;
+
+ opt = xlator_volume_option_get_list (&vol_opt_list, xlopt_key);
+ _free_xlator_opt_key (xlopt_key);
+
+ if (opt)
+ opt_type = opt->type;
+ }
+
+out:
+ if (dl_handle) {
+ dlclose (dl_handle);
+ dl_handle = NULL;
+ }
+
+ return opt_type;
+}
+
+gf_boolean_t
+gd_is_boolean_option (char *key)
+{
+ GF_ASSERT (key);
+
+ if (GF_OPTION_TYPE_BOOL == _gd_get_option_type (key))
+ return _gf_true;
+
+ return _gf_false;
+}
+
+/* This function will restore origin volume to it's snap.
+ * The restore operation will simply replace the Gluster origin
+ * volume with the snap volume.
+ * TODO: Multi-volume delete to be done.
+ * Cleanup in case of restore failure is pending.
+ *
+ * @param orig_vol volinfo of origin volume
+ * @param snap_vol volinfo of snapshot volume
+ *
+ * @return 0 on success and negative value on error
+ */
+int
+gd_restore_snap_volume (dict_t *rsp_dict,
+ glusterd_volinfo_t *orig_vol,
+ glusterd_volinfo_t *snap_vol)
+{
+ int ret = -1;
+ glusterd_volinfo_t *new_volinfo = NULL;
+ glusterd_snap_t *snap = NULL;
+ xlator_t *this = NULL;
+ glusterd_conf_t *conf = NULL;
+ glusterd_volinfo_t *temp_volinfo = NULL;
+ glusterd_volinfo_t *voliter = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+ GF_ASSERT (rsp_dict);
+ conf = this->private;
+ GF_ASSERT (conf);
+
+ GF_VALIDATE_OR_GOTO (this->name, orig_vol, out);
+ GF_VALIDATE_OR_GOTO (this->name, snap_vol, out);
+ snap = snap_vol->snapshot;
+ GF_VALIDATE_OR_GOTO (this->name, snap, out);
+
+ /* Snap volume must be stoped before performing the
+ * restore operation.
+ */
+ ret = glusterd_stop_volume (snap_vol);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to stop "
+ "snap volume");
+ goto out;
+ }
+
+ /* Create a new volinfo for the restored volume */
+ ret = glusterd_volinfo_dup (snap_vol, &new_volinfo, _gf_true);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to create volinfo");
+ goto out;
+ }
+
+ /* Following entries need to be derived from origin volume. */
+ strcpy (new_volinfo->volname, orig_vol->volname);
+ uuid_copy (new_volinfo->volume_id, orig_vol->volume_id);
+ new_volinfo->snap_count = orig_vol->snap_count;
+ new_volinfo->snap_max_hard_limit = orig_vol->snap_max_hard_limit;
+ new_volinfo->is_volume_restored = _gf_true;
+
+ /* Bump the version of the restored volume, so that nodes *
+ * which are done can sync during handshake */
+ new_volinfo->version = orig_vol->version;
+
+ list_for_each_entry_safe (voliter, temp_volinfo,
+ &orig_vol->snap_volumes, snapvol_list) {
+ list_add_tail (&voliter->snapvol_list,
+ &new_volinfo->snap_volumes);
+ }
+ /* Copy the snap vol info to the new_volinfo.*/
+ ret = glusterd_snap_volinfo_restore (rsp_dict, new_volinfo, snap_vol);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to restore snap");
+ (void)glusterd_volinfo_delete (new_volinfo);
+ goto out;
+ }
+
+ /* If the orig_vol is already restored then we should delete
+ * the backend LVMs */
+ if (orig_vol->is_volume_restored) {
+ ret = glusterd_lvm_snapshot_remove (rsp_dict, orig_vol);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to remove "
+ "LVM backend");
+ (void)glusterd_volinfo_delete (new_volinfo);
+ goto out;
+ }
+ }
+
+ /* Once the new_volinfo is completely constructed then delete
+ * the orinal volinfo
+ */
+ ret = glusterd_volinfo_delete (orig_vol);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to delete volinfo");
+ (void)glusterd_volinfo_delete (new_volinfo);
+ goto out;
+ }
+
+ /* New volinfo always shows the status as created. Therefore
+ * set the status to stop. */
+ glusterd_set_volume_status (new_volinfo, GLUSTERD_STATUS_STOPPED);
+
+ list_add_tail (&new_volinfo->vol_list, &conf->volumes);
+
+ /* Now delete the snap entry. As a first step delete the snap
+ * volume information stored in store. */
+ ret = glusterd_snap_remove (rsp_dict, snap, _gf_false, _gf_true);
+ if (ret) {
+ gf_log (this->name, GF_LOG_WARNING, "Failed to delete "
+ "snap %s", snap->snapname);
+ goto out;
+ }
+
+ ret = glusterd_store_volinfo (new_volinfo,
+ GLUSTERD_VOLINFO_VER_AC_INCREMENT);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "Failed to store volinfo");
+ goto out;
+ }
+
+ ret = 0;
+out:
+
+ return ret;
+}
generated by cgit (git 2.34.1) at 2026-01-04 11:19:28 +0000