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
  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);