1 files changed, 0 insertions, 567 deletions

diff --git a/scheduler/rr/src/rr.c b/scheduler/rr/src/rr.c
deleted file mode 100644
index e7b556e671b..00000000000
--- a/scheduler/rr/src/rr.c
+++ /dev/null
@@ -1,567 +0,0 @@
-/*
-  Copyright (c) 2006-2011 Gluster, Inc. <http://www.gluster.com>
-  This file is part of GlusterFS.
-
-  GlusterFS is free software; you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published
-  by the Free Software Foundation; either version 3 of the License,
-  or (at your option) any later version.
-
-  GlusterFS is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-  General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program.  If not, see
-  <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef _CONFIG_H
-#define _CONFIG_H
-#include "config.h"
-#endif
-
-#include <sys/time.h>
-#include <stdlib.h>
-
-#include <stdint.h>
-
-#include "scheduler.h"
-
-#include "rr-options.h"
-#include "rr.h"
-#include "rr-mem-types.h"
-
-#define RR_MIN_FREE_DISK_NOT_REACHED    0
-#define RR_MIN_FREE_DISK_REACHED        1
-
-#define RR_SUBVOLUME_OFFLINE    0
-#define RR_SUBVOLUME_ONLINE     1
-
-#define LOG_ERROR(args...)      gf_log ("rr", GF_LOG_ERROR, ##args)
-#define LOG_WARNING(args...)    gf_log ("rr", GF_LOG_WARNING, ##args)
-#define LOG_CRITICAL(args...)    gf_log ("rr", GF_LOG_CRITICAL, ##args)
-
-#define ROUND_ROBIN(index, count)    ((index + 1) % count)
-
-static int 
-_cleanup_rr (rr_t *rr)
-{
-	int i;
-  
-	if (rr == NULL)
-	{
-		return -1;
-	}
-  
-	if (rr->options.read_only_subvolume_list != NULL)
-	{
-		for (i = 0; i < rr->options.read_only_subvolume_count; i++)
-		{
-			GF_FREE (rr->options.read_only_subvolume_list[i]);
-		}
-		GF_FREE (rr->options.read_only_subvolume_list);
-	}
-  
-	GF_FREE (rr->subvolume_list);
-  
-	GF_FREE (rr);
-  
-	return 0;
-}
-
-int 
-rr_init (xlator_t *this_xl)
-{
-	rr_t *rr = NULL;
-	dict_t *options = NULL;
-	xlator_list_t *children = NULL;
-	uint64_t children_count = 0;
-	int i = 0;
-	int j = 0;
-  
-	if (this_xl == NULL)
-	{
-		return -1;
-	}
-  
-	if ((options = this_xl->options) == NULL)
-	{
-		return -1;
-	}
-  
-	if ((children = this_xl->children) == NULL)
-	{
-		return -1;
-	}
-  
-	if ((rr = GF_CALLOC (1, sizeof (rr_t), gf_rr_mt_rr_t)) == NULL)
-	{
-		return -1;
-	}
-  
-	if (rr_options_validate (options, &rr->options) != 0)
-	{
-		GF_FREE (rr);
-		return -1;
-	}
-  
-	for (i = 0; i < rr->options.read_only_subvolume_count; i++)
-	{
-		char found = 0;
-      
-		for (children = this_xl->children; 
-		     children != NULL; 
-		     children = children->next)
-		{
-			if (strcmp (rr->options.read_only_subvolume_list[i], 
-				    children->xlator->name) == 0)
-			{
-				found = 1;
-				break;
-			}
-		}
-      
-		if (!found)
-		{
-			LOG_ERROR ("read-only subvolume [%s] not found in volume list", 
-				   rr->options.read_only_subvolume_list[i]);
-			_cleanup_rr (rr);
-			return -1;
-		}
-	}
-  
-	for (children = this_xl->children; 
-	     children != NULL; 
-	     children = children->next)
-	{
-		children_count++;
-	}
-  
-	/* bala: excluding read_only_subvolumes */
-	if ((rr->subvolume_count = children_count - 
-	     rr->options.read_only_subvolume_count) == 0)
-	{
-		LOG_ERROR ("no writable volumes found for scheduling");
-		_cleanup_rr (rr);
-		return -1;
-	}
-  
-	if ((rr->subvolume_list = GF_CALLOC (rr->subvolume_count, 
-                                             sizeof (rr_subvolume_t),
-                                             gf_rr_mt_rr_subvolume_t)) == NULL)
-	{
-		_cleanup_rr (rr);
-		return -1;
-	}
-  
-	i = 0;
-	j = 0;
-	for (children = this_xl->children; 
-	     children != NULL; 
-	     children = children->next)
-	{
-		char found = 0;
-      
-		for (j = 0; j < rr->options.read_only_subvolume_count; j++)
-		{
-			if (strcmp (rr->options.read_only_subvolume_list[i], 
-				    children->xlator->name) == 0)
-			{
-				found = 1;
-				break;
-			}
-		}
-      
-		if (!found)
-		{
-			rr_subvolume_t *subvolume = NULL;
-	  
-			subvolume = &rr->subvolume_list[i];
-	  
-			subvolume->xl = children->xlator;
-			subvolume->free_disk_status = RR_MIN_FREE_DISK_NOT_REACHED;
-			subvolume->status = RR_SUBVOLUME_ONLINE;
-	  
-			i++;
-		}
-	}
-  
-	rr->schedule_index = UINT64_MAX;
-	rr->last_stat_fetched_time.tv_sec = 0;
-	rr->last_stat_fetched_time.tv_usec = 0;
-	pthread_mutex_init (&rr->mutex, NULL);
-  
-	*((long *)this_xl->private) = (long)rr;
-  
-	return 0;
-}
-
-void 
-rr_fini (xlator_t *this_xl)
-{
-	rr_t *rr = NULL;
-  
-	if (this_xl == NULL)
-	{
-		return;
-	}
-  
-	if ((rr = (rr_t *) *((long *)this_xl->private)) != NULL)
-	{
-		pthread_mutex_destroy (&rr->mutex);
-		_cleanup_rr (rr);
-		this_xl->private = NULL;
-	}
-  
-	return;
-}
-
-xlator_t *
-rr_schedule (xlator_t *this_xl, const void *path)
-{
-	rr_t *rr = NULL;
-	uint64_t next_schedule_index = 0;
-	int i = 0;
-  
-	if (this_xl == NULL || path == NULL)
-	{
-		return NULL;
-	}
-  
-	rr = (rr_t *) *((long *)this_xl->private);
-	next_schedule_index = ROUND_ROBIN (rr->schedule_index, 
-					   rr->subvolume_count);
-  
-	rr_update (this_xl);
-  
-	for (i = next_schedule_index; i < rr->subvolume_count; i++)
-	{
-		if (rr->subvolume_list[i].status == RR_SUBVOLUME_ONLINE && 
-		    rr->subvolume_list[i].status == RR_MIN_FREE_DISK_NOT_REACHED)
-		{
-			pthread_mutex_lock (&rr->mutex);
-			rr->schedule_index = i;
-			pthread_mutex_unlock (&rr->mutex);
-			return rr->subvolume_list[i].xl;
-		}
-	}
-  
-	for (i = 0; i < next_schedule_index; i++)
-	{
-		if (rr->subvolume_list[i].status == RR_SUBVOLUME_ONLINE && 
-		    rr->subvolume_list[i].status == RR_MIN_FREE_DISK_NOT_REACHED)
-		{
-			pthread_mutex_lock (&rr->mutex);
-			rr->schedule_index = i;
-			pthread_mutex_unlock (&rr->mutex);
-			return rr->subvolume_list[i].xl;
-		}
-	}
-  
-	for (i = next_schedule_index; i < rr->subvolume_count; i++)
-	{
-		if (rr->subvolume_list[i].status == RR_SUBVOLUME_ONLINE)
-		{
-			pthread_mutex_lock (&rr->mutex);
-			rr->schedule_index = i;
-			pthread_mutex_unlock (&rr->mutex);
-			return rr->subvolume_list[i].xl;
-		}
-	}
-  
-	for (i = 0; i < next_schedule_index; i++)
-	{
-		if (rr->subvolume_list[i].status == RR_SUBVOLUME_ONLINE)
-		{
-			pthread_mutex_lock (&rr->mutex);
-			rr->schedule_index = i;
-			pthread_mutex_unlock (&rr->mutex);
-			return rr->subvolume_list[i].xl;
-		}
-	}
-  
-	return NULL;
-}
-
-void
-rr_update (xlator_t *this_xl)
-{
-	rr_t *rr = NULL;
-	struct timeval ctime = {0, 0};
-	int i = 0;
-  
-	if (this_xl == NULL)
-	{
-		return ;
-	}
-  
-	if ((rr = (rr_t *) *((long *)this_xl->private)) == NULL)
-	{
-		return ;
-	}
-  
-	if (gettimeofday (&ctime, NULL) != 0)
-	{
-		return ;
-	}
-  
-	if (ctime.tv_sec > (rr->options.refresh_interval + 
-			    rr->last_stat_fetched_time.tv_sec))
-	{
-		pthread_mutex_lock (&rr->mutex);
-		rr->last_stat_fetched_time = ctime;
-		pthread_mutex_unlock (&rr->mutex);
-      
-		for (i = 0; i < rr->subvolume_count; i++)
-		{
-			xlator_t *subvolume_xl = NULL;
-			call_frame_t *frame = NULL;
-			call_pool_t *pool = NULL;
-	  
-			subvolume_xl = rr->subvolume_list[i].xl;
-	  
-			pool = this_xl->ctx->pool;
-	  
-			frame = create_frame (this_xl, pool);
-
-			STACK_WIND_COOKIE (frame,
-					   rr_update_cbk, 
-					   subvolume_xl->name, 
-					   subvolume_xl, 
-					   subvolume_xl->mops->stats, 
-					   0);
-		}
-	}
-  
-	return ;
-}
-
-int 
-rr_update_cbk (call_frame_t *frame, 
-	       void *cookie, 
-	       xlator_t *this_xl, 
-	       int32_t op_ret, 
-	       int32_t op_errno, 
-	       struct xlator_stats *stats)
-{
-	rr_t *rr = NULL;
-	rr_subvolume_t *subvolume = NULL;
-	uint8_t free_disk_percent = 0;
-	int i = 0;
-  
-	if (frame == NULL)
-	{
-		return -1;
-	}
-  
-	if (cookie == NULL || this_xl == NULL)
-	{
-		STACK_DESTROY (frame->root);
-		return -1;
-	}
-  
-	if (op_ret == 0 && stats == NULL)
-	{
-		LOG_CRITICAL ("fatal! op_ret is 0 and stats is NULL.  "
-			      "Please report this to <gluster-devel@nongnu.org>");
-		STACK_DESTROY (frame->root);
-		return -1;
-	}
-  
-	if ((rr = (rr_t *) *((long *)this_xl->private)) == NULL)
-	{
-		STACK_DESTROY (frame->root);
-		return -1;
-	}
-  
-	for (i = 0; i < rr->subvolume_count; i++)
-	{
-		if (rr->subvolume_list[i].xl->name == (char *) cookie)
-		{
-			subvolume = &rr->subvolume_list[i];
-			break;
-		}
-	}
-  
-	if (subvolume == NULL)
-	{
-		LOG_ERROR ("unknown cookie [%s]", (char *) cookie);
-		STACK_DESTROY (frame->root);
-		return -1;
-	}
-  
-	if (op_ret == 0)
-	{
-		free_disk_percent = (stats->free_disk * 100) / stats->total_disk_size;
-		if (free_disk_percent > rr->options.min_free_disk)
-		{
-			if (subvolume->free_disk_status != RR_MIN_FREE_DISK_NOT_REACHED)
-			{
-				pthread_mutex_lock (&rr->mutex);
-				subvolume->free_disk_status = RR_MIN_FREE_DISK_NOT_REACHED;
-				pthread_mutex_unlock (&rr->mutex);
-				LOG_WARNING ("subvolume [%s] is available with free space for scheduling", 
-					     subvolume->xl->name);
-			}
-		}
-		else
-		{
-			if (subvolume->free_disk_status != RR_MIN_FREE_DISK_REACHED)
-			{
-				pthread_mutex_lock (&rr->mutex);
-				subvolume->free_disk_status = RR_MIN_FREE_DISK_REACHED;
-				pthread_mutex_unlock (&rr->mutex);
-				LOG_WARNING ("subvolume [%s] reached minimum disk space requirement", 
-					     subvolume->xl->name);
-			}
-		}
-	}
-	else 
-	{
-		pthread_mutex_lock (&rr->mutex);
-		subvolume->status = RR_SUBVOLUME_OFFLINE;
-		pthread_mutex_unlock (&rr->mutex);
-		LOG_ERROR ("unable to get subvolume [%s] status information and "
-			   "scheduling is disabled", 
-			   subvolume->xl->name);
-	}
-  
-	STACK_DESTROY (frame->root);
-	return 0;
-}
-
-void
-rr_notify (xlator_t *this_xl, int32_t event, void *data)
-{
-	rr_t *rr = NULL;
-	rr_subvolume_t *subvolume = NULL;
-	xlator_t *subvolume_xl = NULL;
-	int i = 0, ret = 0;
-	call_frame_t *frame = NULL;
-	call_pool_t *pool = NULL;
-	dict_t *xattr = get_new_dict ();
-	int32_t version[1] = {1};
-
-	if (this_xl == NULL || data == NULL) {
-		return ;
-	}
-  
-	if ((rr = (rr_t *) *((long *)this_xl->private)) == NULL) {
-		return ;
-	}
-  
-	subvolume_xl = (xlator_t *) data;
-  
-	for (i = 0; i < rr->subvolume_count; i++) {
-		if (rr->subvolume_list[i].xl == subvolume_xl) {
-			subvolume = &rr->subvolume_list[i];
-			break;
-		}
-	}
-  
-	switch (event) {
-	case GF_EVENT_CHILD_UP:
-		/* Seeding, to be done only once */
-		if (rr->first_time && (i == rr->subvolume_count)) {
-			loc_t loc = {0,};
-			xlator_t *trav = NULL;
-
-			pool = this_xl->ctx->pool;
-			frame = create_frame (this_xl, pool);
-			ret = dict_set_bin (xattr, "trusted.glusterfs.scheduler.rr",
-					    version, sizeof (int32_t));
-			if (-1 == ret) {
-				gf_log (this_xl->name, GF_LOG_ERROR, "rr seed setting failed");
-			}
-			if (xattr)
-				dict_ref (xattr);
-			
-			loc.path = gf_strdup ("/");
-			for (trav = this_xl->parents->xlator; trav; trav = trav->parents->xlator) {
-				if (trav->itable) {
-					loc.inode = trav->itable->root;
-					break;
-				}
-			}
-			STACK_WIND (frame,
-				    rr_notify_cbk,
-				    (xlator_t *)data,
-				    ((xlator_t *)data)->fops->xattrop,
-				    &loc,
-				    GF_XATTROP_ADD_ARRAY,
-				    xattr);
-	  
-			if (xattr)
-				dict_unref (xattr);
-
-			rr->first_time = 0;
-		}
-		if (subvolume) {
-			pthread_mutex_lock (&rr->mutex);
-			subvolume->status = RR_SUBVOLUME_ONLINE;
-			pthread_mutex_unlock (&rr->mutex);
-		}
-		break;
-	case GF_EVENT_CHILD_DOWN:
-		if (subvolume) {
-			pthread_mutex_lock (&rr->mutex);
-			subvolume->status = RR_SUBVOLUME_OFFLINE;
-			pthread_mutex_unlock (&rr->mutex);
-		}
-		break;
-	}
-  
-	return ;
-}
-
-int 
-rr_notify_cbk (call_frame_t *frame, 
-	       void *cookie, 
-	       xlator_t *this_xl, 
-	       int32_t op_ret, 
-	       int32_t op_errno,
-	       dict_t *xattr)
-{
-	rr_t *rr = NULL;
-	int32_t *index = NULL;
-	int32_t ret = -1;
-	void *tmp_index_ptr = NULL;
-
-	if (frame == NULL) 
-	{
-		return -1;
-	}
-  
-	if ((this_xl == NULL) || (op_ret == -1))
-	{
-		STACK_DESTROY (frame->root);
-		return -1;
-	}
-  
-	if ((rr = (rr_t *) *((long *)this_xl->private)) == NULL)
-	{
-		STACK_DESTROY (frame->root);
-		return -1;
-	}
-  
-	ret = dict_get_bin (xattr, "trusted.glusterfs.scheduler.rr", &tmp_index_ptr);
-	index = tmp_index_ptr;
-	if (ret == 0)
-		rr->schedule_index = (index[0] % rr->subvolume_count);
-	else
-		rr->schedule_index = 0;
-
-	STACK_DESTROY (frame->root);
-	return 0;
-}
-
-struct sched_ops sched = {
-	.init     = rr_init,
-	.fini     = rr_fini,
-	.update   = rr_update,
-	.schedule = rr_schedule,
-	.notify   = rr_notify
-};
-