dynamic volume changes for graph replacement

Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 971 (dynamic volume management)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=971

1 files changed, 79 insertions, 73 deletions

diff --git a/libglusterfs/src/statedump.c b/libglusterfs/src/statedump.c
index 678ed6c8ecd..6f30a30ea78 100644
--- a/libglusterfs/src/statedump.c
+++ b/libglusterfs/src/statedump.c
@@ -33,17 +33,20 @@ extern xlator_t global_xlator;
 static pthread_mutex_t  gf_proc_dump_mutex;
 static int gf_dump_fd = -1;
 
-static void 
+
+static void
 gf_proc_dump_lock (void)
 {
-	pthread_mutex_lock(&gf_proc_dump_mutex);
+	pthread_mutex_lock (&gf_proc_dump_mutex);
 }
 
-static void 
+
+static void
 gf_proc_dump_unlock (void)
 {
-	pthread_mutex_unlock(&gf_proc_dump_mutex);
-} 
+	pthread_mutex_unlock (&gf_proc_dump_mutex);
+}
+
 
 static int
 gf_proc_dump_open (void)
@@ -51,10 +54,10 @@ gf_proc_dump_open (void)
         char path[256];
         int  dump_fd = -1;
 
-        memset(path, 0, sizeof(path));
-        snprintf(path, sizeof(path), "%s.%d",GF_DUMP_LOGFILE_ROOT, getpid());
+        memset (path, 0, sizeof (path));
+        snprintf (path, sizeof (path), "%s.%d", GF_DUMP_LOGFILE_ROOT, getpid ());
 
-        dump_fd = open(path, O_CREAT|O_RDWR|O_TRUNC|O_APPEND, 0600);
+        dump_fd = open (path, O_CREAT|O_RDWR|O_TRUNC|O_APPEND, 0600);
         if (dump_fd < 0) {
                 gf_log("", GF_LOG_ERROR, "Unable to open file: %s"
                 " errno: %d", path, errno);
@@ -65,56 +68,59 @@ gf_proc_dump_open (void)
         return 0;
 }
 
+
 static void
 gf_proc_dump_close (void)
 {
-        close(gf_dump_fd);
+        close (gf_dump_fd);
         gf_dump_fd = -1;
 }
 
+
 void
-gf_proc_dump_add_section (char *key, ...) 
+gf_proc_dump_add_section (char *key, ...)
 {
-		
+
         char buf[GF_DUMP_MAX_BUF_LEN];
         va_list ap;
         int     ret;
 
 	assert(key);
-                
-        memset(buf, 0, sizeof(buf));
-        snprintf(buf, GF_DUMP_MAX_BUF_LEN, "\n[");
-        va_start(ap, key);
-        vsnprintf(buf + strlen(buf), 
-                        GF_DUMP_MAX_BUF_LEN - strlen(buf), key, ap);
-        va_end(ap);
-        snprintf(buf + strlen(buf),
-                        GF_DUMP_MAX_BUF_LEN - strlen(buf),  "]\n");
-        ret = write(gf_dump_fd, buf, strlen(buf));
+
+        memset (buf, 0, sizeof(buf));
+        snprintf (buf, GF_DUMP_MAX_BUF_LEN, "\n[");
+        va_start (ap, key);
+        vsnprintf (buf + strlen(buf),
+                   GF_DUMP_MAX_BUF_LEN - strlen (buf), key, ap);
+        va_end (ap);
+        snprintf (buf + strlen(buf),
+                  GF_DUMP_MAX_BUF_LEN - strlen (buf),  "]\n");
+        ret = write (gf_dump_fd, buf, strlen (buf));
 }
 
+
 void
-gf_proc_dump_write (char *key, char *value,...) 
-{ 
-    
-        char buf[GF_DUMP_MAX_BUF_LEN];
-        int  offset = 0;
+gf_proc_dump_write (char *key, char *value,...)
+{
+
+        char         buf[GF_DUMP_MAX_BUF_LEN];
+        int          offset = 0;
 	va_list      ap;
         int          ret;
-    
-        offset = strlen(key);
-                
-        memset(buf, 0, GF_DUMP_MAX_BUF_LEN);
-        snprintf(buf, GF_DUMP_MAX_BUF_LEN, "%s",key);
-        snprintf(buf + offset, GF_DUMP_MAX_BUF_LEN - offset, "=");
+
+        offset = strlen (key);
+
+        memset (buf, 0, GF_DUMP_MAX_BUF_LEN);
+        snprintf (buf, GF_DUMP_MAX_BUF_LEN, "%s", key);
+        snprintf (buf + offset, GF_DUMP_MAX_BUF_LEN - offset, "=");
         offset += 1;
-        va_start(ap, value);
-        vsnprintf(buf + offset, GF_DUMP_MAX_BUF_LEN - offset, value, ap); 
-        va_end(ap);
+        va_start (ap, value);
+        vsnprintf (buf + offset, GF_DUMP_MAX_BUF_LEN - offset, value, ap);
+        va_end (ap);
 
-        offset = strlen(buf);
-        snprintf(buf + offset, GF_DUMP_MAX_BUF_LEN - offset, "\n");
-        ret = write(gf_dump_fd, buf, strlen(buf));
+        offset = strlen (buf);
+        snprintf (buf + offset, GF_DUMP_MAX_BUF_LEN - offset, "\n");
+        ret = write (gf_dump_fd, buf, strlen (buf));
 }
 
 static void
@@ -165,20 +171,20 @@ gf_proc_dump_mem_info ()
 #ifdef HAVE_MALLOC_STATS
         struct mallinfo info;
 
-        memset(&info, 0, sizeof(struct mallinfo));
-        info = mallinfo();
-
-        gf_proc_dump_add_section("mallinfo");
-        gf_proc_dump_write("mallinfo_arena", "%d", info.arena);
-        gf_proc_dump_write("mallinfo_ordblks", "%d", info.ordblks);
-        gf_proc_dump_write("mallinfo_smblks","%d", info.smblks);
-        gf_proc_dump_write("mallinfo_hblks","%d", info.hblks);
-        gf_proc_dump_write("mallinfo_hblkhd", "%d", info.hblkhd);
-        gf_proc_dump_write("mallinfo_usmblks","%d", info.usmblks);
-        gf_proc_dump_write("mallinfo_fsmblks","%d", info.fsmblks);
-        gf_proc_dump_write("mallinfo_uordblks","%d", info.uordblks);
-        gf_proc_dump_write("mallinfo_fordblks", "%d", info.fordblks);
-        gf_proc_dump_write("mallinfo_keepcost", "%d", info.keepcost);
+        memset (&info, 0, sizeof (struct mallinfo));
+        info = mallinfo ();
+
+        gf_proc_dump_add_section ("mallinfo");
+        gf_proc_dump_write ("mallinfo_arena", "%d", info.arena);
+        gf_proc_dump_write ("mallinfo_ordblks", "%d", info.ordblks);
+        gf_proc_dump_write ("mallinfo_smblks", "%d", info.smblks);
+        gf_proc_dump_write ("mallinfo_hblks", "%d", info.hblks);
+        gf_proc_dump_write ("mallinfo_hblkhd", "%d", info.hblkhd);
+        gf_proc_dump_write ("mallinfo_usmblks", "%d", info.usmblks);
+        gf_proc_dump_write ("mallinfo_fsmblks", "%d", info.fsmblks);
+        gf_proc_dump_write ("mallinfo_uordblks", "%d", info.uordblks);
+        gf_proc_dump_write ("mallinfo_fordblks", "%d", info.fordblks);
+        gf_proc_dump_write ("mallinfo_keepcost", "%d", info.keepcost);
 #endif
         gf_proc_dump_xlator_mem_info(&global_xlator);
 
@@ -203,12 +209,11 @@ gf_proc_dump_xlator_info (xlator_t *this_xl)
                         continue;
                 }
                 if (this_xl->dumpops->priv)
-                        this_xl->dumpops->priv(this_xl);
+                        this_xl->dumpops->priv (this_xl);
                 if (this_xl->dumpops->inode)
-                        this_xl->dumpops->inode(this_xl);
+                        this_xl->dumpops->inode (this_xl);
                 if (this_xl->dumpops->fd)
-                        this_xl->dumpops->fd(this_xl);
-
+                        this_xl->dumpops->fd (this_xl);
                 this_xl = this_xl->next;
         }
 
@@ -221,44 +226,45 @@ gf_proc_dump_info (int signum)
 {
         int               ret = -1;
         glusterfs_ctx_t   *ctx = NULL;
-    
-        gf_proc_dump_lock();
-        ret = gf_proc_dump_open();
-        if (ret < 0) 
+
+        gf_proc_dump_lock ();
+        ret = gf_proc_dump_open ();
+        if (ret < 0)
                 goto out;
-        gf_proc_dump_mem_info();
-	ctx = get_global_ctx_ptr();
+        gf_proc_dump_mem_info ();
+	ctx = glusterfs_ctx_get ();
         if (ctx) {
-                iobuf_stats_dump(ctx->iobuf_pool);
-                gf_proc_dump_pending_frames(ctx->pool);
-                gf_proc_dump_xlator_info(ctx->graph);
+                iobuf_stats_dump (ctx->iobuf_pool);
+                gf_proc_dump_pending_frames (ctx->pool);
+                gf_proc_dump_xlator_info (ctx->active->first);
         }
-        
-        gf_proc_dump_close();
+
+        gf_proc_dump_close ();
 out:
-        gf_proc_dump_unlock();
+        gf_proc_dump_unlock ();
 
         return;
 }
 
-void 
+
+void
 gf_proc_dump_fini (void)
 {
-	pthread_mutex_destroy(&gf_proc_dump_mutex);
+	pthread_mutex_destroy (&gf_proc_dump_mutex);
 }
 
 
 void
 gf_proc_dump_init ()
 {
-	pthread_mutex_init(&gf_proc_dump_mutex, NULL);
+	pthread_mutex_init (&gf_proc_dump_mutex, NULL);
 
 	return;
 }
 
+
 void
 gf_proc_dump_cleanup (void)
 {
-	pthread_mutex_destroy(&gf_proc_dump_mutex);
+	pthread_mutex_destroy (&gf_proc_dump_mutex);
 }
-