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
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/*
Copyright (c) 2014 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 "syscall.h"
#include "glusterd.h"
#include "glusterd-utils.h"
#include "glusterd-volgen.h"
#include "glusterd-nfs-svc.h"
#include "glusterd-messages.h"
#include "glusterd-svc-helper.h"
static gf_boolean_t
glusterd_nfssvc_need_start()
{
glusterd_conf_t *priv = NULL;
gf_boolean_t start = _gf_false;
glusterd_volinfo_t *volinfo = NULL;
priv = THIS->private;
cds_list_for_each_entry(volinfo, &priv->volumes, vol_list)
{
if (!glusterd_is_volume_started(volinfo))
continue;
if (dict_get_str_boolean(volinfo->dict, NFS_DISABLE_MAP_KEY, 1))
continue;
start = _gf_true;
break;
}
return start;
}
static int
glusterd_nfssvc_create_volfile()
{
char filepath[PATH_MAX] = {
0,
};
glusterd_conf_t *conf = THIS->private;
glusterd_svc_build_volfile_path(conf->nfs_svc.name, conf->workdir, filepath,
sizeof(filepath));
return glusterd_create_global_volfile(build_nfs_graph, filepath, NULL);
}
static int
glusterd_nfssvc_manager(glusterd_svc_t *svc, void *data, int flags)
{
int ret = -1;
if (!svc->inited) {
ret = glusterd_svc_init(svc, "nfs");
if (ret) {
gf_msg(THIS->name, GF_LOG_ERROR, 0, GD_MSG_FAILED_INIT_NFSSVC,
"Failed to init nfs service");
goto out;
} else {
svc->inited = _gf_true;
gf_msg_debug(THIS->name, 0, "nfs service initialized");
}
}
ret = svc->stop(svc, SIGKILL);
if (ret)
goto out;
/* not an error, or a (very) soft error at best */
if (sys_access(XLATORDIR "/nfs/server.so", R_OK) != 0) {
gf_msg(THIS->name, GF_LOG_INFO, 0, GD_MSG_GNFS_XLATOR_NOT_INSTALLED,
"nfs/server.so xlator is not installed");
goto out;
}
ret = glusterd_nfssvc_create_volfile();
if (ret)
goto out;
if (glusterd_nfssvc_need_start()) {
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;
}
static int
glusterd_nfssvc_start(glusterd_svc_t *svc, int flags)
{
return glusterd_svc_start(svc, flags, NULL);
}
static int
glusterd_nfssvc_stop(glusterd_svc_t *svc, int sig)
{
int ret = -1;
gf_boolean_t deregister = _gf_false;
if (glusterd_proc_is_running(&(svc->proc)))
deregister = _gf_true;
ret = glusterd_svc_stop(svc, sig);
if (ret)
goto out;
if (deregister)
glusterd_nfs_pmap_deregister();
out:
gf_msg_debug(THIS->name, 0, "Returning %d", ret);
return ret;
}
void
glusterd_nfssvc_build(glusterd_svc_t *svc)
{
svc->manager = glusterd_nfssvc_manager;
svc->start = glusterd_nfssvc_start;
svc->stop = glusterd_nfssvc_stop;
}
int
glusterd_nfssvc_reconfigure()
{
int ret = -1;
xlator_t *this = NULL;
glusterd_conf_t *priv = NULL;
gf_boolean_t identical = _gf_false;
gf_boolean_t vol_started = _gf_false;
glusterd_volinfo_t *volinfo = NULL;
this = THIS;
GF_VALIDATE_OR_GOTO("glusterd", this, out);
priv = this->private;
GF_VALIDATE_OR_GOTO(this->name, priv, out);
/* not an error, or a (very) soft error at best */
if (sys_access(XLATORDIR "/nfs/server.so", R_OK) != 0) {
gf_msg(THIS->name, GF_LOG_INFO, 0, GD_MSG_GNFS_XLATOR_NOT_INSTALLED,
"nfs/server.so xlator is not installed");
ret = 0;
goto out;
}
cds_list_for_each_entry(volinfo, &priv->volumes, vol_list)
{
if (GLUSTERD_STATUS_STARTED == volinfo->status) {
vol_started = _gf_true;
break;
}
}
if (!vol_started) {
ret = 0;
goto out;
}
/*
* 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->nfs_svc.name,
build_nfs_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->nfs_svc.name,
build_nfs_graph, &identical);
if (ret)
goto out;
/* Topology is not changed, but just the options. But write the
* options to NFS volfile, so that NFS will be reconfigured.
*/
if (identical) {
ret = glusterd_nfssvc_create_volfile();
if (ret == 0) { /* Only if above PASSES */
ret = glusterd_fetchspec_notify(THIS);
}
goto out;
}
/*
* NFS volfile's topology has been changed. NFS server needs
* to be RESTARTED to ACT on the changed volfile.
*/
ret = priv->nfs_svc.manager(&(priv->nfs_svc), NULL, PROC_START_NO_WAIT);
out:
gf_msg_debug(this ? this->name : "glusterd", 0, "Returning %d", ret);
return ret;
}
|
