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1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * dlmdebug.c | |
5 | * | |
6 | * debug functionality for the dlm | |
7 | * | |
8 | * Copyright (C) 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | * | |
25 | */ | |
26 | ||
27 | #include <linux/types.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/highmem.h> | |
30 | #include <linux/utsname.h> | |
31 | #include <linux/sysctl.h> | |
32 | #include <linux/spinlock.h> | |
33 | ||
34 | #include "cluster/heartbeat.h" | |
35 | #include "cluster/nodemanager.h" | |
36 | #include "cluster/tcp.h" | |
37 | ||
38 | #include "dlmapi.h" | |
39 | #include "dlmcommon.h" | |
6714d8e8 KH |
40 | |
41 | #include "dlmdomain.h" | |
6714d8e8 KH |
42 | |
43 | #define MLOG_MASK_PREFIX ML_DLM | |
44 | #include "cluster/masklog.h" | |
45 | ||
46 | void dlm_print_one_lock_resource(struct dlm_lock_resource *res) | |
47 | { | |
48 | mlog(ML_NOTICE, "lockres: %.*s, owner=%u, state=%u\n", | |
49 | res->lockname.len, res->lockname.name, | |
50 | res->owner, res->state); | |
51 | spin_lock(&res->spinlock); | |
52 | __dlm_print_one_lock_resource(res); | |
53 | spin_unlock(&res->spinlock); | |
54 | } | |
55 | ||
56 | void __dlm_print_one_lock_resource(struct dlm_lock_resource *res) | |
57 | { | |
58 | struct list_head *iter2; | |
59 | struct dlm_lock *lock; | |
60 | ||
61 | assert_spin_locked(&res->spinlock); | |
62 | ||
63 | mlog(ML_NOTICE, "lockres: %.*s, owner=%u, state=%u\n", | |
64 | res->lockname.len, res->lockname.name, | |
65 | res->owner, res->state); | |
66 | mlog(ML_NOTICE, " last used: %lu, on purge list: %s\n", | |
67 | res->last_used, list_empty(&res->purge) ? "no" : "yes"); | |
68 | mlog(ML_NOTICE, " granted queue: \n"); | |
69 | list_for_each(iter2, &res->granted) { | |
70 | lock = list_entry(iter2, struct dlm_lock, list); | |
71 | spin_lock(&lock->spinlock); | |
72 | mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, " | |
29004858 KH |
73 | "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", |
74 | lock->ml.type, lock->ml.convert_type, lock->ml.node, | |
75 | dlm_get_lock_cookie_node(lock->ml.cookie), | |
76 | dlm_get_lock_cookie_seq(lock->ml.cookie), | |
6714d8e8 KH |
77 | list_empty(&lock->ast_list) ? 'y' : 'n', |
78 | lock->ast_pending ? 'y' : 'n', | |
79 | list_empty(&lock->bast_list) ? 'y' : 'n', | |
80 | lock->bast_pending ? 'y' : 'n'); | |
81 | spin_unlock(&lock->spinlock); | |
82 | } | |
83 | mlog(ML_NOTICE, " converting queue: \n"); | |
84 | list_for_each(iter2, &res->converting) { | |
85 | lock = list_entry(iter2, struct dlm_lock, list); | |
86 | spin_lock(&lock->spinlock); | |
87 | mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, " | |
29004858 KH |
88 | "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", |
89 | lock->ml.type, lock->ml.convert_type, lock->ml.node, | |
90 | dlm_get_lock_cookie_node(lock->ml.cookie), | |
91 | dlm_get_lock_cookie_seq(lock->ml.cookie), | |
6714d8e8 KH |
92 | list_empty(&lock->ast_list) ? 'y' : 'n', |
93 | lock->ast_pending ? 'y' : 'n', | |
94 | list_empty(&lock->bast_list) ? 'y' : 'n', | |
95 | lock->bast_pending ? 'y' : 'n'); | |
96 | spin_unlock(&lock->spinlock); | |
97 | } | |
98 | mlog(ML_NOTICE, " blocked queue: \n"); | |
99 | list_for_each(iter2, &res->blocked) { | |
100 | lock = list_entry(iter2, struct dlm_lock, list); | |
101 | spin_lock(&lock->spinlock); | |
102 | mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, " | |
29004858 KH |
103 | "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", |
104 | lock->ml.type, lock->ml.convert_type, lock->ml.node, | |
105 | dlm_get_lock_cookie_node(lock->ml.cookie), | |
106 | dlm_get_lock_cookie_seq(lock->ml.cookie), | |
6714d8e8 KH |
107 | list_empty(&lock->ast_list) ? 'y' : 'n', |
108 | lock->ast_pending ? 'y' : 'n', | |
109 | list_empty(&lock->bast_list) ? 'y' : 'n', | |
110 | lock->bast_pending ? 'y' : 'n'); | |
111 | spin_unlock(&lock->spinlock); | |
112 | } | |
113 | } | |
114 | ||
115 | void dlm_print_one_lock(struct dlm_lock *lockid) | |
116 | { | |
117 | dlm_print_one_lock_resource(lockid->lockres); | |
118 | } | |
119 | EXPORT_SYMBOL_GPL(dlm_print_one_lock); | |
120 | ||
3fb5a989 | 121 | #if 0 |
6714d8e8 KH |
122 | void dlm_dump_lock_resources(struct dlm_ctxt *dlm) |
123 | { | |
124 | struct dlm_lock_resource *res; | |
81f2094a MF |
125 | struct hlist_node *iter; |
126 | struct hlist_head *bucket; | |
6714d8e8 KH |
127 | int i; |
128 | ||
129 | mlog(ML_NOTICE, "struct dlm_ctxt: %s, node=%u, key=%u\n", | |
130 | dlm->name, dlm->node_num, dlm->key); | |
131 | if (!dlm || !dlm->name) { | |
132 | mlog(ML_ERROR, "dlm=%p\n", dlm); | |
133 | return; | |
134 | } | |
135 | ||
136 | spin_lock(&dlm->spinlock); | |
81f2094a | 137 | for (i=0; i<DLM_HASH_BUCKETS; i++) { |
03d864c0 | 138 | bucket = dlm_lockres_hash(dlm, i); |
81f2094a | 139 | hlist_for_each_entry(res, iter, bucket, hash_node) |
6714d8e8 | 140 | dlm_print_one_lock_resource(res); |
6714d8e8 KH |
141 | } |
142 | spin_unlock(&dlm->spinlock); | |
143 | } | |
3fb5a989 | 144 | #endif /* 0 */ |
6714d8e8 KH |
145 | |
146 | static const char *dlm_errnames[] = { | |
147 | [DLM_NORMAL] = "DLM_NORMAL", | |
148 | [DLM_GRANTED] = "DLM_GRANTED", | |
149 | [DLM_DENIED] = "DLM_DENIED", | |
150 | [DLM_DENIED_NOLOCKS] = "DLM_DENIED_NOLOCKS", | |
151 | [DLM_WORKING] = "DLM_WORKING", | |
152 | [DLM_BLOCKED] = "DLM_BLOCKED", | |
153 | [DLM_BLOCKED_ORPHAN] = "DLM_BLOCKED_ORPHAN", | |
154 | [DLM_DENIED_GRACE_PERIOD] = "DLM_DENIED_GRACE_PERIOD", | |
155 | [DLM_SYSERR] = "DLM_SYSERR", | |
156 | [DLM_NOSUPPORT] = "DLM_NOSUPPORT", | |
157 | [DLM_CANCELGRANT] = "DLM_CANCELGRANT", | |
158 | [DLM_IVLOCKID] = "DLM_IVLOCKID", | |
159 | [DLM_SYNC] = "DLM_SYNC", | |
160 | [DLM_BADTYPE] = "DLM_BADTYPE", | |
161 | [DLM_BADRESOURCE] = "DLM_BADRESOURCE", | |
162 | [DLM_MAXHANDLES] = "DLM_MAXHANDLES", | |
163 | [DLM_NOCLINFO] = "DLM_NOCLINFO", | |
164 | [DLM_NOLOCKMGR] = "DLM_NOLOCKMGR", | |
165 | [DLM_NOPURGED] = "DLM_NOPURGED", | |
166 | [DLM_BADARGS] = "DLM_BADARGS", | |
167 | [DLM_VOID] = "DLM_VOID", | |
168 | [DLM_NOTQUEUED] = "DLM_NOTQUEUED", | |
169 | [DLM_IVBUFLEN] = "DLM_IVBUFLEN", | |
170 | [DLM_CVTUNGRANT] = "DLM_CVTUNGRANT", | |
171 | [DLM_BADPARAM] = "DLM_BADPARAM", | |
172 | [DLM_VALNOTVALID] = "DLM_VALNOTVALID", | |
173 | [DLM_REJECTED] = "DLM_REJECTED", | |
174 | [DLM_ABORT] = "DLM_ABORT", | |
175 | [DLM_CANCEL] = "DLM_CANCEL", | |
176 | [DLM_IVRESHANDLE] = "DLM_IVRESHANDLE", | |
177 | [DLM_DEADLOCK] = "DLM_DEADLOCK", | |
178 | [DLM_DENIED_NOASTS] = "DLM_DENIED_NOASTS", | |
179 | [DLM_FORWARD] = "DLM_FORWARD", | |
180 | [DLM_TIMEOUT] = "DLM_TIMEOUT", | |
181 | [DLM_IVGROUPID] = "DLM_IVGROUPID", | |
182 | [DLM_VERS_CONFLICT] = "DLM_VERS_CONFLICT", | |
183 | [DLM_BAD_DEVICE_PATH] = "DLM_BAD_DEVICE_PATH", | |
184 | [DLM_NO_DEVICE_PERMISSION] = "DLM_NO_DEVICE_PERMISSION", | |
185 | [DLM_NO_CONTROL_DEVICE ] = "DLM_NO_CONTROL_DEVICE ", | |
186 | [DLM_RECOVERING] = "DLM_RECOVERING", | |
187 | [DLM_MIGRATING] = "DLM_MIGRATING", | |
188 | [DLM_MAXSTATS] = "DLM_MAXSTATS", | |
189 | }; | |
190 | ||
191 | static const char *dlm_errmsgs[] = { | |
192 | [DLM_NORMAL] = "request in progress", | |
193 | [DLM_GRANTED] = "request granted", | |
194 | [DLM_DENIED] = "request denied", | |
195 | [DLM_DENIED_NOLOCKS] = "request denied, out of system resources", | |
196 | [DLM_WORKING] = "async request in progress", | |
197 | [DLM_BLOCKED] = "lock request blocked", | |
198 | [DLM_BLOCKED_ORPHAN] = "lock request blocked by a orphan lock", | |
199 | [DLM_DENIED_GRACE_PERIOD] = "topological change in progress", | |
200 | [DLM_SYSERR] = "system error", | |
201 | [DLM_NOSUPPORT] = "unsupported", | |
202 | [DLM_CANCELGRANT] = "can't cancel convert: already granted", | |
203 | [DLM_IVLOCKID] = "bad lockid", | |
204 | [DLM_SYNC] = "synchronous request granted", | |
205 | [DLM_BADTYPE] = "bad resource type", | |
206 | [DLM_BADRESOURCE] = "bad resource handle", | |
207 | [DLM_MAXHANDLES] = "no more resource handles", | |
208 | [DLM_NOCLINFO] = "can't contact cluster manager", | |
209 | [DLM_NOLOCKMGR] = "can't contact lock manager", | |
210 | [DLM_NOPURGED] = "can't contact purge daemon", | |
211 | [DLM_BADARGS] = "bad api args", | |
212 | [DLM_VOID] = "no status", | |
213 | [DLM_NOTQUEUED] = "NOQUEUE was specified and request failed", | |
214 | [DLM_IVBUFLEN] = "invalid resource name length", | |
215 | [DLM_CVTUNGRANT] = "attempted to convert ungranted lock", | |
216 | [DLM_BADPARAM] = "invalid lock mode specified", | |
217 | [DLM_VALNOTVALID] = "value block has been invalidated", | |
218 | [DLM_REJECTED] = "request rejected, unrecognized client", | |
219 | [DLM_ABORT] = "blocked lock request cancelled", | |
220 | [DLM_CANCEL] = "conversion request cancelled", | |
221 | [DLM_IVRESHANDLE] = "invalid resource handle", | |
222 | [DLM_DEADLOCK] = "deadlock recovery refused this request", | |
223 | [DLM_DENIED_NOASTS] = "failed to allocate AST", | |
224 | [DLM_FORWARD] = "request must wait for primary's response", | |
225 | [DLM_TIMEOUT] = "timeout value for lock has expired", | |
226 | [DLM_IVGROUPID] = "invalid group specification", | |
227 | [DLM_VERS_CONFLICT] = "version conflicts prevent request handling", | |
228 | [DLM_BAD_DEVICE_PATH] = "Locks device does not exist or path wrong", | |
229 | [DLM_NO_DEVICE_PERMISSION] = "Client has insufficient perms for device", | |
230 | [DLM_NO_CONTROL_DEVICE] = "Cannot set options on opened device ", | |
231 | [DLM_RECOVERING] = "lock resource being recovered", | |
232 | [DLM_MIGRATING] = "lock resource being migrated", | |
233 | [DLM_MAXSTATS] = "invalid error number", | |
234 | }; | |
235 | ||
236 | const char *dlm_errmsg(enum dlm_status err) | |
237 | { | |
238 | if (err >= DLM_MAXSTATS || err < 0) | |
239 | return dlm_errmsgs[DLM_MAXSTATS]; | |
240 | return dlm_errmsgs[err]; | |
241 | } | |
242 | EXPORT_SYMBOL_GPL(dlm_errmsg); | |
243 | ||
244 | const char *dlm_errname(enum dlm_status err) | |
245 | { | |
246 | if (err >= DLM_MAXSTATS || err < 0) | |
247 | return dlm_errnames[DLM_MAXSTATS]; | |
248 | return dlm_errnames[err]; | |
249 | } | |
250 | EXPORT_SYMBOL_GPL(dlm_errname); |