blob: 64239b37e5d4bcd9a48c902469f8a85881f38568 [file] [log] [blame]
Kurt Hackel6714d8e2005-12-15 14:31:23 -08001/* -*- 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"
Kurt Hackel6714d8e2005-12-15 14:31:23 -080040
41#include "dlmdomain.h"
Kurt Hackel6714d8e2005-12-15 14:31:23 -080042
43#define MLOG_MASK_PREFIX ML_DLM
44#include "cluster/masklog.h"
45
46void 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
Kurt Hackelba2bf212006-12-01 14:47:20 -080056static void dlm_print_lockres_refmap(struct dlm_lock_resource *res)
57{
58 int bit;
59 assert_spin_locked(&res->spinlock);
60
61 mlog(ML_NOTICE, " refmap nodes: [ ");
62 bit = 0;
63 while (1) {
64 bit = find_next_bit(res->refmap, O2NM_MAX_NODES, bit);
65 if (bit >= O2NM_MAX_NODES)
66 break;
67 printk("%u ", bit);
68 bit++;
69 }
70 printk("], inflight=%u\n", res->inflight_locks);
71}
72
Kurt Hackel6714d8e2005-12-15 14:31:23 -080073void __dlm_print_one_lock_resource(struct dlm_lock_resource *res)
74{
75 struct list_head *iter2;
76 struct dlm_lock *lock;
77
78 assert_spin_locked(&res->spinlock);
79
80 mlog(ML_NOTICE, "lockres: %.*s, owner=%u, state=%u\n",
81 res->lockname.len, res->lockname.name,
82 res->owner, res->state);
83 mlog(ML_NOTICE, " last used: %lu, on purge list: %s\n",
84 res->last_used, list_empty(&res->purge) ? "no" : "yes");
Kurt Hackelba2bf212006-12-01 14:47:20 -080085 dlm_print_lockres_refmap(res);
Kurt Hackel6714d8e2005-12-15 14:31:23 -080086 mlog(ML_NOTICE, " granted queue: \n");
87 list_for_each(iter2, &res->granted) {
88 lock = list_entry(iter2, struct dlm_lock, list);
89 spin_lock(&lock->spinlock);
90 mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, "
Kurt Hackel29004852006-03-02 16:43:36 -080091 "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n",
92 lock->ml.type, lock->ml.convert_type, lock->ml.node,
Kurt Hackel74aa2582007-01-17 15:11:36 -080093 dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
94 dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
Kurt Hackel6714d8e2005-12-15 14:31:23 -080095 list_empty(&lock->ast_list) ? 'y' : 'n',
96 lock->ast_pending ? 'y' : 'n',
97 list_empty(&lock->bast_list) ? 'y' : 'n',
98 lock->bast_pending ? 'y' : 'n');
99 spin_unlock(&lock->spinlock);
100 }
101 mlog(ML_NOTICE, " converting queue: \n");
102 list_for_each(iter2, &res->converting) {
103 lock = list_entry(iter2, struct dlm_lock, list);
104 spin_lock(&lock->spinlock);
105 mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, "
Kurt Hackel29004852006-03-02 16:43:36 -0800106 "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n",
107 lock->ml.type, lock->ml.convert_type, lock->ml.node,
Kurt Hackel74aa2582007-01-17 15:11:36 -0800108 dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
109 dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
Kurt Hackel6714d8e2005-12-15 14:31:23 -0800110 list_empty(&lock->ast_list) ? 'y' : 'n',
111 lock->ast_pending ? 'y' : 'n',
112 list_empty(&lock->bast_list) ? 'y' : 'n',
113 lock->bast_pending ? 'y' : 'n');
114 spin_unlock(&lock->spinlock);
115 }
116 mlog(ML_NOTICE, " blocked queue: \n");
117 list_for_each(iter2, &res->blocked) {
118 lock = list_entry(iter2, struct dlm_lock, list);
119 spin_lock(&lock->spinlock);
120 mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, "
Kurt Hackel29004852006-03-02 16:43:36 -0800121 "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n",
122 lock->ml.type, lock->ml.convert_type, lock->ml.node,
Kurt Hackel74aa2582007-01-17 15:11:36 -0800123 dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
124 dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
Kurt Hackel6714d8e2005-12-15 14:31:23 -0800125 list_empty(&lock->ast_list) ? 'y' : 'n',
126 lock->ast_pending ? 'y' : 'n',
127 list_empty(&lock->bast_list) ? 'y' : 'n',
128 lock->bast_pending ? 'y' : 'n');
129 spin_unlock(&lock->spinlock);
130 }
131}
132
133void dlm_print_one_lock(struct dlm_lock *lockid)
134{
135 dlm_print_one_lock_resource(lockid->lockres);
136}
137EXPORT_SYMBOL_GPL(dlm_print_one_lock);
138
Adrian Bunk3fb5a982006-05-16 17:26:41 +0200139#if 0
Kurt Hackel6714d8e2005-12-15 14:31:23 -0800140void dlm_dump_lock_resources(struct dlm_ctxt *dlm)
141{
142 struct dlm_lock_resource *res;
Mark Fasheh81f20942006-02-28 17:31:22 -0800143 struct hlist_node *iter;
144 struct hlist_head *bucket;
Kurt Hackel6714d8e2005-12-15 14:31:23 -0800145 int i;
146
147 mlog(ML_NOTICE, "struct dlm_ctxt: %s, node=%u, key=%u\n",
148 dlm->name, dlm->node_num, dlm->key);
149 if (!dlm || !dlm->name) {
150 mlog(ML_ERROR, "dlm=%p\n", dlm);
151 return;
152 }
153
154 spin_lock(&dlm->spinlock);
Mark Fasheh81f20942006-02-28 17:31:22 -0800155 for (i=0; i<DLM_HASH_BUCKETS; i++) {
Daniel Phillips03d864c2006-03-10 18:08:16 -0800156 bucket = dlm_lockres_hash(dlm, i);
Mark Fasheh81f20942006-02-28 17:31:22 -0800157 hlist_for_each_entry(res, iter, bucket, hash_node)
Kurt Hackel6714d8e2005-12-15 14:31:23 -0800158 dlm_print_one_lock_resource(res);
Kurt Hackel6714d8e2005-12-15 14:31:23 -0800159 }
160 spin_unlock(&dlm->spinlock);
161}
Adrian Bunk3fb5a982006-05-16 17:26:41 +0200162#endif /* 0 */
Kurt Hackel6714d8e2005-12-15 14:31:23 -0800163
164static const char *dlm_errnames[] = {
165 [DLM_NORMAL] = "DLM_NORMAL",
166 [DLM_GRANTED] = "DLM_GRANTED",
167 [DLM_DENIED] = "DLM_DENIED",
168 [DLM_DENIED_NOLOCKS] = "DLM_DENIED_NOLOCKS",
169 [DLM_WORKING] = "DLM_WORKING",
170 [DLM_BLOCKED] = "DLM_BLOCKED",
171 [DLM_BLOCKED_ORPHAN] = "DLM_BLOCKED_ORPHAN",
172 [DLM_DENIED_GRACE_PERIOD] = "DLM_DENIED_GRACE_PERIOD",
173 [DLM_SYSERR] = "DLM_SYSERR",
174 [DLM_NOSUPPORT] = "DLM_NOSUPPORT",
175 [DLM_CANCELGRANT] = "DLM_CANCELGRANT",
176 [DLM_IVLOCKID] = "DLM_IVLOCKID",
177 [DLM_SYNC] = "DLM_SYNC",
178 [DLM_BADTYPE] = "DLM_BADTYPE",
179 [DLM_BADRESOURCE] = "DLM_BADRESOURCE",
180 [DLM_MAXHANDLES] = "DLM_MAXHANDLES",
181 [DLM_NOCLINFO] = "DLM_NOCLINFO",
182 [DLM_NOLOCKMGR] = "DLM_NOLOCKMGR",
183 [DLM_NOPURGED] = "DLM_NOPURGED",
184 [DLM_BADARGS] = "DLM_BADARGS",
185 [DLM_VOID] = "DLM_VOID",
186 [DLM_NOTQUEUED] = "DLM_NOTQUEUED",
187 [DLM_IVBUFLEN] = "DLM_IVBUFLEN",
188 [DLM_CVTUNGRANT] = "DLM_CVTUNGRANT",
189 [DLM_BADPARAM] = "DLM_BADPARAM",
190 [DLM_VALNOTVALID] = "DLM_VALNOTVALID",
191 [DLM_REJECTED] = "DLM_REJECTED",
192 [DLM_ABORT] = "DLM_ABORT",
193 [DLM_CANCEL] = "DLM_CANCEL",
194 [DLM_IVRESHANDLE] = "DLM_IVRESHANDLE",
195 [DLM_DEADLOCK] = "DLM_DEADLOCK",
196 [DLM_DENIED_NOASTS] = "DLM_DENIED_NOASTS",
197 [DLM_FORWARD] = "DLM_FORWARD",
198 [DLM_TIMEOUT] = "DLM_TIMEOUT",
199 [DLM_IVGROUPID] = "DLM_IVGROUPID",
200 [DLM_VERS_CONFLICT] = "DLM_VERS_CONFLICT",
201 [DLM_BAD_DEVICE_PATH] = "DLM_BAD_DEVICE_PATH",
202 [DLM_NO_DEVICE_PERMISSION] = "DLM_NO_DEVICE_PERMISSION",
203 [DLM_NO_CONTROL_DEVICE ] = "DLM_NO_CONTROL_DEVICE ",
204 [DLM_RECOVERING] = "DLM_RECOVERING",
205 [DLM_MIGRATING] = "DLM_MIGRATING",
206 [DLM_MAXSTATS] = "DLM_MAXSTATS",
207};
208
209static const char *dlm_errmsgs[] = {
210 [DLM_NORMAL] = "request in progress",
211 [DLM_GRANTED] = "request granted",
212 [DLM_DENIED] = "request denied",
213 [DLM_DENIED_NOLOCKS] = "request denied, out of system resources",
214 [DLM_WORKING] = "async request in progress",
215 [DLM_BLOCKED] = "lock request blocked",
216 [DLM_BLOCKED_ORPHAN] = "lock request blocked by a orphan lock",
217 [DLM_DENIED_GRACE_PERIOD] = "topological change in progress",
218 [DLM_SYSERR] = "system error",
219 [DLM_NOSUPPORT] = "unsupported",
220 [DLM_CANCELGRANT] = "can't cancel convert: already granted",
221 [DLM_IVLOCKID] = "bad lockid",
222 [DLM_SYNC] = "synchronous request granted",
223 [DLM_BADTYPE] = "bad resource type",
224 [DLM_BADRESOURCE] = "bad resource handle",
225 [DLM_MAXHANDLES] = "no more resource handles",
226 [DLM_NOCLINFO] = "can't contact cluster manager",
227 [DLM_NOLOCKMGR] = "can't contact lock manager",
228 [DLM_NOPURGED] = "can't contact purge daemon",
229 [DLM_BADARGS] = "bad api args",
230 [DLM_VOID] = "no status",
231 [DLM_NOTQUEUED] = "NOQUEUE was specified and request failed",
232 [DLM_IVBUFLEN] = "invalid resource name length",
233 [DLM_CVTUNGRANT] = "attempted to convert ungranted lock",
234 [DLM_BADPARAM] = "invalid lock mode specified",
235 [DLM_VALNOTVALID] = "value block has been invalidated",
236 [DLM_REJECTED] = "request rejected, unrecognized client",
237 [DLM_ABORT] = "blocked lock request cancelled",
238 [DLM_CANCEL] = "conversion request cancelled",
239 [DLM_IVRESHANDLE] = "invalid resource handle",
240 [DLM_DEADLOCK] = "deadlock recovery refused this request",
241 [DLM_DENIED_NOASTS] = "failed to allocate AST",
242 [DLM_FORWARD] = "request must wait for primary's response",
243 [DLM_TIMEOUT] = "timeout value for lock has expired",
244 [DLM_IVGROUPID] = "invalid group specification",
245 [DLM_VERS_CONFLICT] = "version conflicts prevent request handling",
246 [DLM_BAD_DEVICE_PATH] = "Locks device does not exist or path wrong",
247 [DLM_NO_DEVICE_PERMISSION] = "Client has insufficient perms for device",
248 [DLM_NO_CONTROL_DEVICE] = "Cannot set options on opened device ",
249 [DLM_RECOVERING] = "lock resource being recovered",
250 [DLM_MIGRATING] = "lock resource being migrated",
251 [DLM_MAXSTATS] = "invalid error number",
252};
253
254const char *dlm_errmsg(enum dlm_status err)
255{
256 if (err >= DLM_MAXSTATS || err < 0)
257 return dlm_errmsgs[DLM_MAXSTATS];
258 return dlm_errmsgs[err];
259}
260EXPORT_SYMBOL_GPL(dlm_errmsg);
261
262const char *dlm_errname(enum dlm_status err)
263{
264 if (err >= DLM_MAXSTATS || err < 0)
265 return dlm_errnames[DLM_MAXSTATS];
266 return dlm_errnames[err];
267}
268EXPORT_SYMBOL_GPL(dlm_errname);