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 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 56static 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 73void __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"); 85 dlm_print_lockres_refmap(res); 86 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, " 91 "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, 93 dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)), 94 dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)), 95 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, " 106 "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, 108 dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)), 109 dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)), 110 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, " 121 "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, 123 dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)), 124 dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)), 125 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); 138 139 140static 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 185static 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 230const 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} 236EXPORT_SYMBOL_GPL(dlm_errmsg); 237 238const 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} 244EXPORT_SYMBOL_GPL(dlm_errname); 245