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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/*
Copyright (c) 2006-2012 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.
*/
#include "globals.h"
#include "run.h"
#include "glusterd.h"
#include "glusterd-utils.h"
#include "glusterd-volgen.h"
#include "glusterd-scrub-svc.h"
#include "glusterd-svc-helper.h"
char *scrub_svc_name = "scrub";
void
glusterd_scrubsvc_build(glusterd_svc_t *svc)
{
svc->manager = glusterd_scrubsvc_manager;
svc->start = glusterd_scrubsvc_start;
svc->stop = glusterd_scrubsvc_stop;
}
int
glusterd_scrubsvc_init(glusterd_svc_t *svc)
{
return glusterd_svc_init(svc, scrub_svc_name);
}
static int
glusterd_scrubsvc_create_volfile()
{
char filepath[PATH_MAX] = {
0,
};
int ret = -1;
glusterd_conf_t *conf = NULL;
xlator_t *this = NULL;
this = THIS;
conf = this->private;
GF_ASSERT(conf);
glusterd_svc_build_volfile_path(scrub_svc_name, conf->workdir, filepath,
sizeof(filepath));
ret = glusterd_create_global_volfile(build_scrub_graph, filepath, NULL);
if (ret) {
gf_msg(this->name, GF_LOG_ERROR, 0, GD_MSG_VOLFILE_CREATE_FAIL,
"Failed to create volfile");
goto out;
}
out:
gf_msg_debug(this->name, 0, "Returning %d", ret);
return ret;
}
int
glusterd_scrubsvc_manager(glusterd_svc_t *svc, void *data, int flags)
{
int ret = -EINVAL;
if (!svc->inited) {
ret = glusterd_scrubsvc_init(svc);
if (ret) {
gf_msg(THIS->name, GF_LOG_ERROR, 0, GD_MSG_SCRUB_INIT_FAIL,
"Failed to init "
"scrub service");
goto out;
} else {
svc->inited = _gf_true;
gf_msg_debug(THIS->name, 0,
"scrub service "
"initialized");
}
}
if (glusterd_should_i_stop_bitd()) {
ret = svc->stop(svc, SIGTERM);
} else {
ret = glusterd_scrubsvc_create_volfile();
if (ret)
goto out;
ret = svc->stop(svc, SIGKILL);
if (ret)
goto out;
ret = svc->start(svc, flags);
if (ret)
goto out;
ret = glusterd_conn_connect(&(svc->conn));
if (ret)
goto out;
}
out:
if (ret)
gf_event(EVENT_SVC_MANAGER_FAILED, "svc_name=%s", svc->name);
gf_msg_debug(THIS->name, 0, "Returning %d", ret);
return ret;
}
int
glusterd_scrubsvc_start(glusterd_svc_t *svc, int flags)
{
int ret = -1;
dict_t *cmdict = NULL;
cmdict = dict_new();
if (!cmdict)
goto error_return;
ret = dict_set_str(cmdict, "cmdarg0", "--global-timer-wheel");
if (ret)
goto dealloc_dict;
ret = glusterd_svc_start(svc, flags, cmdict);
dealloc_dict:
dict_unref(cmdict);
error_return:
return ret;
}
int
glusterd_scrubsvc_stop(glusterd_svc_t *svc, int sig)
{
return glusterd_svc_stop(svc, sig);
}
int
glusterd_scrubsvc_reconfigure()
{
int ret = -1;
xlator_t *this = NULL;
glusterd_conf_t *priv = NULL;
gf_boolean_t identical = _gf_false;
this = THIS;
GF_VALIDATE_OR_GOTO("glusterd", this, out);
priv = this->private;
GF_VALIDATE_OR_GOTO(this->name, priv, out);
if (glusterd_should_i_stop_bitd())
goto manager;
/*
* Check both OLD and NEW volfiles, if they are SAME by size
* and cksum i.e. "character-by-character". If YES, then
* NOTHING has been changed, just return.
*/
ret = glusterd_svc_check_volfile_identical(priv->scrub_svc.name,
build_scrub_graph, &identical);
if (ret)
goto out;
if (identical) {
ret = 0;
goto out;
}
/*
* They are not identical. Find out if the topology is changed
* OR just the volume options. If just the options which got
* changed, then inform the xlator to reconfigure the options.
*/
identical = _gf_false; /* RESET the FLAG */
ret = glusterd_svc_check_topology_identical(priv->scrub_svc.name,
build_scrub_graph, &identical);
if (ret)
goto out;
/* Topology is not changed, but just the options. But write the
* options to scrub volfile, so that scrub will be reconfigured.
*/
if (identical) {
ret = glusterd_scrubsvc_create_volfile();
if (ret == 0) { /* Only if above PASSES */
ret = glusterd_fetchspec_notify(THIS);
}
goto out;
}
manager:
/*
* scrub volfile's topology has been changed. scrub server needs
* to be RESTARTED to ACT on the changed volfile.
*/
ret = priv->scrub_svc.manager(&(priv->scrub_svc), NULL, PROC_START_NO_WAIT);
out:
gf_msg_debug(this ? this->name : "glusterd", 0, "Returning %d", ret);
return ret;
}
|
