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/*
Copyright (c) 2015 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 _TIER_H_
#define _TIER_H_
/******************************************************************************/
/* This is from dht-rebalancer.c as we dont have dht-rebalancer.h */
#include "dht-common.h"
#include "xlator.h"
#include <signal.h>
#include <fnmatch.h>
#include <signal.h>
/*
* Size of timer wheel. We would not promote or demote less
* frequently than this number.
*/
#define TIMER_SECS 3600
#include "gfdb_data_store.h"
#include <ctype.h>
#include <sys/stat.h>
#define PROMOTION_QFILE "promotequeryfile"
#define DEMOTION_QFILE "demotequeryfile"
#define TIER_HASHED_SUBVOL conf->subvolumes[0]
#define TIER_UNHASHED_SUBVOL conf->subvolumes[1]
#define GET_QFILE_PATH(is_promotion)\
(is_promotion) ? promotion_qfile : demotion_qfile
typedef struct tier_qfile_array {
int *fd_array;
ssize_t array_size;
ssize_t next_index;
/* Indicate the number of exhuasted FDs*/
ssize_t exhausted_count;
} tier_qfile_array_t;
typedef struct _query_cbk_args {
xlator_t *this;
gf_defrag_info_t *defrag;
/* This is write */
int query_fd;
int is_promotion;
/* This is for read */
tier_qfile_array_t *qfile_array;
} query_cbk_args_t;
int
gf_run_tier(xlator_t *this, gf_defrag_info_t *defrag);
typedef struct gfdb_brick_info {
gfdb_time_t *time_stamp;
gf_boolean_t _gfdb_promote;
query_cbk_args_t *_query_cbk_args;
} gfdb_brick_info_t;
typedef struct brick_list {
xlator_t *xlator;
char *brick_db_path;
char brick_name[NAME_MAX];
char qfile_path[PATH_MAX];
struct list_head list;
} tier_brick_list_t;
typedef struct _dm_thread_args {
xlator_t *this;
gf_defrag_info_t *defrag;
struct list_head *brick_list;
int freq_time;
int return_value;
int is_promotion;
} migration_args_t;
typedef enum tier_watermark_op_ {
TIER_WM_NONE = 0,
TIER_WM_LOW,
TIER_WM_HI,
TIER_WM_MID
} tier_watermark_op_t;
#define DEFAULT_PROMOTE_FREQ_SEC 120
#define DEFAULT_DEMOTE_FREQ_SEC 120
#define DEFAULT_DEMOTE_DEGRADED 10
#define DEFAULT_WRITE_FREQ_SEC 0
#define DEFAULT_READ_FREQ_SEC 0
#define DEFAULT_WM_LOW 75
#define DEFAULT_WM_HI 90
#define DEFAULT_TIER_MODE TIER_MODE_TEST
#define DEFAULT_TIER_MAX_MIGRATE_MB 1000
#define DEFAULT_TIER_MAX_MIGRATE_FILES 5000
#endif
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