1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/*
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 __BIT_ROT_H__
#define __BIT_ROT_H__
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "glusterfs.h"
#include "logging.h"
#include "dict.h"
#include "xlator.h"
#include "defaults.h"
#include "syncop.h"
#include "syncop-utils.h"
#include "changelog.h"
#include "timer-wheel.h"
#include "bit-rot-common.h"
#include "bit-rot-stub-mem-types.h"
#include <openssl/sha.h>
/* TODO: make this configurable */
#define BR_WORKERS 8
#define signature_size(hl) (sizeof (br_isignature_t) + hl + 1)
struct br_child {
char child_up; /* Indicates whether this child is
up or not */
xlator_t *xl; /* client xlator corresponding to
this child */
inode_table_t *table; /* inode table for this child */
char brick_path[PATH_MAX]; /* brick export directory of this
child */
struct list_head list; /* hook to attach to the list of
UP children */
xlator_t *this; /* Bit rot xlator */
pthread_t thread; /* initial crawler for unsigned
object(s) */
int threadrunning; /* active thread */
struct mem_pool *timer_pool; /* timer-wheel's timer mem-pool */
struct timeval tv;
};
typedef struct br_child br_child_t;
struct br_obj_n_workers {
struct list_head objects; /* queue of objects expired from the
timer wheel and ready to be picked
up for signing */
pthread_t workers[BR_WORKERS]; /* Threads which pick up the objects
from the above queue and start
signing each object */
};
typedef struct br_obj_n_workers br_obj_n_workers_t;
struct br_private {
pthread_mutex_t lock;
struct list_head bricks; /* list of bricks from which CHILD_UP
has been received */
pthread_cond_t cond; /* handling CHILD_UP notifications */
pthread_cond_t object_cond; /* handling signing of objects */
int child_count;
br_child_t *children; /* list of subvolumes */
int up_children;
pthread_t thread; /* thread for connecting each UP
child with changelog */
struct tvec_base *timer_wheel; /* timer wheel where the objects which
changelog has sent sits and waits
for expiry */
br_obj_n_workers_t *obj_queue; /* place holder for all the objects
that are expired from timer wheel
and ready to be picked up for
signing and the workers which sign
the objects */
int32_t expiry_time; /* objects "wait" time */
};
typedef struct br_private br_private_t;
struct br_object {
xlator_t *this;
uuid_t gfid;
unsigned long signedversion; /* version aginst which this object will
be signed */
br_child_t *child; /* object's subvolume */
struct list_head list; /* hook to add to the queue once the
object is expired from timer wheel */
void *data;
};
typedef struct br_object br_object_t;
void
br_log_object (xlator_t *, char *, uuid_t, int32_t);
void
br_log_object_path (xlator_t *, char *, const char *, int32_t);
int32_t
br_object_checksum (unsigned char *, br_object_t *, fd_t *, struct iatt *);
int32_t
br_prepare_loc (xlator_t *, br_child_t *, loc_t *, gf_dirent_t *, loc_t *);
#endif /* __BIT_ROT_H__ */
|
