[PATCH] ocfs2: use hlists for lockres hash
[linux-2.6.git] / fs / ocfs2 / dlm / dlmdebug.c
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"
40 #include "dlmdebug.h"
41
42 #include "dlmdomain.h"
43 #include "dlmdebug.h"
44
45 #define MLOG_MASK_PREFIX ML_DLM
46 #include "cluster/masklog.h"
47
48 void dlm_print_one_lock_resource(struct dlm_lock_resource *res)
49 {
50         mlog(ML_NOTICE, "lockres: %.*s, owner=%u, state=%u\n",
51                res->lockname.len, res->lockname.name,
52                res->owner, res->state);
53         spin_lock(&res->spinlock);
54         __dlm_print_one_lock_resource(res);
55         spin_unlock(&res->spinlock);
56 }
57
58 void __dlm_print_one_lock_resource(struct dlm_lock_resource *res)
59 {
60         struct list_head *iter2;
61         struct dlm_lock *lock;
62
63         assert_spin_locked(&res->spinlock);
64
65         mlog(ML_NOTICE, "lockres: %.*s, owner=%u, state=%u\n",
66                res->lockname.len, res->lockname.name,
67                res->owner, res->state);
68         mlog(ML_NOTICE, "  last used: %lu, on purge list: %s\n",
69              res->last_used, list_empty(&res->purge) ? "no" : "yes");
70         mlog(ML_NOTICE, "  granted queue: \n");
71         list_for_each(iter2, &res->granted) {
72                 lock = list_entry(iter2, struct dlm_lock, list);
73                 spin_lock(&lock->spinlock);
74                 mlog(ML_NOTICE, "    type=%d, conv=%d, node=%u, "
75                        "cookie=%"MLFu64", ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", 
76                        lock->ml.type, lock->ml.convert_type, lock->ml.node, lock->ml.cookie, 
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, "
88                        "cookie=%"MLFu64", ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", 
89                        lock->ml.type, lock->ml.convert_type, lock->ml.node, lock->ml.cookie, 
90                        list_empty(&lock->ast_list) ? 'y' : 'n',
91                        lock->ast_pending ? 'y' : 'n',
92                        list_empty(&lock->bast_list) ? 'y' : 'n',
93                        lock->bast_pending ? 'y' : 'n');
94                 spin_unlock(&lock->spinlock);
95         }
96         mlog(ML_NOTICE, "  blocked queue: \n");
97         list_for_each(iter2, &res->blocked) {
98                 lock = list_entry(iter2, struct dlm_lock, list);
99                 spin_lock(&lock->spinlock);
100                 mlog(ML_NOTICE, "    type=%d, conv=%d, node=%u, "
101                        "cookie=%"MLFu64", ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", 
102                        lock->ml.type, lock->ml.convert_type, lock->ml.node, lock->ml.cookie, 
103                        list_empty(&lock->ast_list) ? 'y' : 'n',
104                        lock->ast_pending ? 'y' : 'n',
105                        list_empty(&lock->bast_list) ? 'y' : 'n',
106                        lock->bast_pending ? 'y' : 'n');
107                 spin_unlock(&lock->spinlock);
108         }
109 }
110
111 void dlm_print_one_lock(struct dlm_lock *lockid)
112 {
113         dlm_print_one_lock_resource(lockid->lockres);
114 }
115 EXPORT_SYMBOL_GPL(dlm_print_one_lock);
116
117 void dlm_dump_lock_resources(struct dlm_ctxt *dlm)
118 {
119         struct dlm_lock_resource *res;
120         struct hlist_node *iter;
121         struct hlist_head *bucket;
122         int i;
123
124         mlog(ML_NOTICE, "struct dlm_ctxt: %s, node=%u, key=%u\n",
125                   dlm->name, dlm->node_num, dlm->key);
126         if (!dlm || !dlm->name) {
127                 mlog(ML_ERROR, "dlm=%p\n", dlm);
128                 return;
129         }
130
131         spin_lock(&dlm->spinlock);
132         for (i=0; i<DLM_HASH_BUCKETS; i++) {
133                 bucket = &(dlm->lockres_hash[i]);
134                 hlist_for_each_entry(res, iter, bucket, hash_node)
135                         dlm_print_one_lock_resource(res);
136         }
137         spin_unlock(&dlm->spinlock);
138 }
139
140 static const char *dlm_errnames[] = {
141         [DLM_NORMAL] =                  "DLM_NORMAL",
142         [DLM_GRANTED] =                 "DLM_GRANTED",
143         [DLM_DENIED] =                  "DLM_DENIED",
144         [DLM_DENIED_NOLOCKS] =          "DLM_DENIED_NOLOCKS",
145         [DLM_WORKING] =                 "DLM_WORKING",
146         [DLM_BLOCKED] =                 "DLM_BLOCKED",
147         [DLM_BLOCKED_ORPHAN] =          "DLM_BLOCKED_ORPHAN",
148         [DLM_DENIED_GRACE_PERIOD] =     "DLM_DENIED_GRACE_PERIOD",
149         [DLM_SYSERR] =                  "DLM_SYSERR",
150         [DLM_NOSUPPORT] =               "DLM_NOSUPPORT",
151         [DLM_CANCELGRANT] =             "DLM_CANCELGRANT",
152         [DLM_IVLOCKID] =                "DLM_IVLOCKID",
153         [DLM_SYNC] =                    "DLM_SYNC",
154         [DLM_BADTYPE] =                 "DLM_BADTYPE",
155         [DLM_BADRESOURCE] =             "DLM_BADRESOURCE",
156         [DLM_MAXHANDLES] =              "DLM_MAXHANDLES",
157         [DLM_NOCLINFO] =                "DLM_NOCLINFO",
158         [DLM_NOLOCKMGR] =               "DLM_NOLOCKMGR",
159         [DLM_NOPURGED] =                "DLM_NOPURGED",
160         [DLM_BADARGS] =                 "DLM_BADARGS",
161         [DLM_VOID] =                    "DLM_VOID",
162         [DLM_NOTQUEUED] =               "DLM_NOTQUEUED",
163         [DLM_IVBUFLEN] =                "DLM_IVBUFLEN",
164         [DLM_CVTUNGRANT] =              "DLM_CVTUNGRANT",
165         [DLM_BADPARAM] =                "DLM_BADPARAM",
166         [DLM_VALNOTVALID] =             "DLM_VALNOTVALID",
167         [DLM_REJECTED] =                "DLM_REJECTED",
168         [DLM_ABORT] =                   "DLM_ABORT",
169         [DLM_CANCEL] =                  "DLM_CANCEL",
170         [DLM_IVRESHANDLE] =             "DLM_IVRESHANDLE",
171         [DLM_DEADLOCK] =                "DLM_DEADLOCK",
172         [DLM_DENIED_NOASTS] =           "DLM_DENIED_NOASTS",
173         [DLM_FORWARD] =                 "DLM_FORWARD",
174         [DLM_TIMEOUT] =                 "DLM_TIMEOUT",
175         [DLM_IVGROUPID] =               "DLM_IVGROUPID",
176         [DLM_VERS_CONFLICT] =           "DLM_VERS_CONFLICT",
177         [DLM_BAD_DEVICE_PATH] =         "DLM_BAD_DEVICE_PATH",
178         [DLM_NO_DEVICE_PERMISSION] =    "DLM_NO_DEVICE_PERMISSION",
179         [DLM_NO_CONTROL_DEVICE ] =      "DLM_NO_CONTROL_DEVICE ",
180         [DLM_RECOVERING] =              "DLM_RECOVERING",
181         [DLM_MIGRATING] =               "DLM_MIGRATING",
182         [DLM_MAXSTATS] =                "DLM_MAXSTATS",
183 };
184
185 static const char *dlm_errmsgs[] = {
186         [DLM_NORMAL] =                  "request in progress",
187         [DLM_GRANTED] =                 "request granted",
188         [DLM_DENIED] =                  "request denied",
189         [DLM_DENIED_NOLOCKS] =          "request denied, out of system resources",
190         [DLM_WORKING] =                 "async request in progress",
191         [DLM_BLOCKED] =                 "lock request blocked",
192         [DLM_BLOCKED_ORPHAN] =          "lock request blocked by a orphan lock",
193         [DLM_DENIED_GRACE_PERIOD] =     "topological change in progress",
194         [DLM_SYSERR] =                  "system error",
195         [DLM_NOSUPPORT] =               "unsupported",
196         [DLM_CANCELGRANT] =             "can't cancel convert: already granted",
197         [DLM_IVLOCKID] =                "bad lockid",
198         [DLM_SYNC] =                    "synchronous request granted",
199         [DLM_BADTYPE] =                 "bad resource type",
200         [DLM_BADRESOURCE] =             "bad resource handle",
201         [DLM_MAXHANDLES] =              "no more resource handles",
202         [DLM_NOCLINFO] =                "can't contact cluster manager",
203         [DLM_NOLOCKMGR] =               "can't contact lock manager",
204         [DLM_NOPURGED] =                "can't contact purge daemon",
205         [DLM_BADARGS] =                 "bad api args",
206         [DLM_VOID] =                    "no status",
207         [DLM_NOTQUEUED] =               "NOQUEUE was specified and request failed",
208         [DLM_IVBUFLEN] =                "invalid resource name length",
209         [DLM_CVTUNGRANT] =              "attempted to convert ungranted lock",
210         [DLM_BADPARAM] =                "invalid lock mode specified",
211         [DLM_VALNOTVALID] =             "value block has been invalidated",
212         [DLM_REJECTED] =                "request rejected, unrecognized client",
213         [DLM_ABORT] =                   "blocked lock request cancelled",
214         [DLM_CANCEL] =                  "conversion request cancelled",
215         [DLM_IVRESHANDLE] =             "invalid resource handle",
216         [DLM_DEADLOCK] =                "deadlock recovery refused this request",
217         [DLM_DENIED_NOASTS] =           "failed to allocate AST",
218         [DLM_FORWARD] =                 "request must wait for primary's response",
219         [DLM_TIMEOUT] =                 "timeout value for lock has expired",
220         [DLM_IVGROUPID] =               "invalid group specification",
221         [DLM_VERS_CONFLICT] =           "version conflicts prevent request handling",
222         [DLM_BAD_DEVICE_PATH] =         "Locks device does not exist or path wrong",
223         [DLM_NO_DEVICE_PERMISSION] =    "Client has insufficient perms for device",
224         [DLM_NO_CONTROL_DEVICE] =       "Cannot set options on opened device ",
225         [DLM_RECOVERING] =              "lock resource being recovered",
226         [DLM_MIGRATING] =               "lock resource being migrated",
227         [DLM_MAXSTATS] =                "invalid error number",
228 };
229
230 const char *dlm_errmsg(enum dlm_status err)
231 {
232         if (err >= DLM_MAXSTATS || err < 0)
233                 return dlm_errmsgs[DLM_MAXSTATS];
234         return dlm_errmsgs[err];
235 }
236 EXPORT_SYMBOL_GPL(dlm_errmsg);
237
238 const char *dlm_errname(enum dlm_status err)
239 {
240         if (err >= DLM_MAXSTATS || err < 0)
241                 return dlm_errnames[DLM_MAXSTATS];
242         return dlm_errnames[err];
243 }
244 EXPORT_SYMBOL_GPL(dlm_errname);