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 41 #include "dlmdomain.h" 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, " 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), 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=%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), 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, " 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), 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); 120 121 #if 0 122 void dlm_dump_lock_resources(struct dlm_ctxt *dlm) 123 { 124 struct dlm_lock_resource *res; 125 struct hlist_node *iter; 126 struct hlist_head *bucket; 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); 137 for (i=0; i<DLM_HASH_BUCKETS; i++) { 138 bucket = dlm_lockres_hash(dlm, i); 139 hlist_for_each_entry(res, iter, bucket, hash_node) 140 dlm_print_one_lock_resource(res); 141 } 142 spin_unlock(&dlm->spinlock); 143 } 144 #endif /* 0 */ 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); 251