/* -*- mode: c; c-basic-offset: 8; -*- * vim: noexpandtab sw=8 ts=8 sts=0: * * dlmdebug.c * * debug functionality for the dlm * * Copyright (C) 2004 Oracle. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. * */ #include <linux/types.h> #include <linux/slab.h> #include <linux/highmem.h> #include <linux/utsname.h> #include <linux/sysctl.h> #include <linux/spinlock.h> #include "cluster/heartbeat.h" #include "cluster/nodemanager.h" #include "cluster/tcp.h" #include "dlmapi.h" #include "dlmcommon.h" #include "dlmdebug.h" #include "dlmdomain.h" #include "dlmdebug.h" #define MLOG_MASK_PREFIX ML_DLM #include "cluster/masklog.h" void dlm_print_one_lock_resource(struct dlm_lock_resource *res) { mlog(ML_NOTICE, "lockres: %.*s, owner=%u, state=%u\n", res->lockname.len, res->lockname.name, res->owner, res->state); spin_lock(&res->spinlock); __dlm_print_one_lock_resource(res); spin_unlock(&res->spinlock); } void __dlm_print_one_lock_resource(struct dlm_lock_resource *res) { struct list_head *iter2; struct dlm_lock *lock; assert_spin_locked(&res->spinlock); mlog(ML_NOTICE, "lockres: %.*s, owner=%u, state=%u\n", res->lockname.len, res->lockname.name, res->owner, res->state); mlog(ML_NOTICE, " last used: %lu, on purge list: %s\n", res->last_used, list_empty(&res->purge) ? "no" : "yes"); mlog(ML_NOTICE, " granted queue: \n"); list_for_each(iter2, &res->granted) { lock = list_entry(iter2, struct dlm_lock, list); spin_lock(&lock->spinlock); mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, " "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", lock->ml.type, lock->ml.convert_type, lock->ml.node, dlm_get_lock_cookie_node(lock->ml.cookie), dlm_get_lock_cookie_seq(lock->ml.cookie), list_empty(&lock->ast_list) ? 'y' : 'n', lock->ast_pending ? 'y' : 'n', list_empty(&lock->bast_list) ? 'y' : 'n', lock->bast_pending ? 'y' : 'n'); spin_unlock(&lock->spinlock); } mlog(ML_NOTICE, " converting queue: \n"); list_for_each(iter2, &res->converting) { lock = list_entry(iter2, struct dlm_lock, list); spin_lock(&lock->spinlock); mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, " "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", lock->ml.type, lock->ml.convert_type, lock->ml.node, dlm_get_lock_cookie_node(lock->ml.cookie), dlm_get_lock_cookie_seq(lock->ml.cookie), list_empty(&lock->ast_list) ? 'y' : 'n', lock->ast_pending ? 'y' : 'n', list_empty(&lock->bast_list) ? 'y' : 'n', lock->bast_pending ? 'y' : 'n'); spin_unlock(&lock->spinlock); } mlog(ML_NOTICE, " blocked queue: \n"); list_for_each(iter2, &res->blocked) { lock = list_entry(iter2, struct dlm_lock, list); spin_lock(&lock->spinlock); mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, " "cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", lock->ml.type, lock->ml.convert_type, lock->ml.node, dlm_get_lock_cookie_node(lock->ml.cookie), dlm_get_lock_cookie_seq(lock->ml.cookie), list_empty(&lock->ast_list) ? 'y' : 'n', lock->ast_pending ? 'y' : 'n', list_empty(&lock->bast_list) ? 'y' : 'n', lock->bast_pending ? 'y' : 'n'); spin_unlock(&lock->spinlock); } } void dlm_print_one_lock(struct dlm_lock *lockid) { dlm_print_one_lock_resource(lockid->lockres); } EXPORT_SYMBOL_GPL(dlm_print_one_lock); void dlm_dump_lock_resources(struct dlm_ctxt *dlm) { struct dlm_lock_resource *res; struct hlist_node *iter; struct hlist_head *bucket; int i; mlog(ML_NOTICE, "struct dlm_ctxt: %s, node=%u, key=%u\n", dlm->name, dlm->node_num, dlm->key); if (!dlm || !dlm->name) { mlog(ML_ERROR, "dlm=%p\n", dlm); return; } spin_lock(&dlm->spinlock); for (i=0; i<DLM_HASH_BUCKETS; i++) { bucket = &(dlm->lockres_hash[i]); hlist_for_each_entry(res, iter, bucket, hash_node) dlm_print_one_lock_resource(res); } spin_unlock(&dlm->spinlock); } static const char *dlm_errnames[] = { [DLM_NORMAL] = "DLM_NORMAL", [DLM_GRANTED] = "DLM_GRANTED", [DLM_DENIED] = "DLM_DENIED", [DLM_DENIED_NOLOCKS] = "DLM_DENIED_NOLOCKS", [DLM_WORKING] = "DLM_WORKING", [DLM_BLOCKED] = "DLM_BLOCKED", [DLM_BLOCKED_ORPHAN] = "DLM_BLOCKED_ORPHAN", [DLM_DENIED_GRACE_PERIOD] = "DLM_DENIED_GRACE_PERIOD", [DLM_SYSERR] = "DLM_SYSERR", [DLM_NOSUPPORT] = "DLM_NOSUPPORT", [DLM_CANCELGRANT] = "DLM_CANCELGRANT", [DLM_IVLOCKID] = "DLM_IVLOCKID", [DLM_SYNC] = "DLM_SYNC", [DLM_BADTYPE] = "DLM_BADTYPE", [DLM_BADRESOURCE] = "DLM_BADRESOURCE", [DLM_MAXHANDLES] = "DLM_MAXHANDLES", [DLM_NOCLINFO] = "DLM_NOCLINFO", [DLM_NOLOCKMGR] = "DLM_NOLOCKMGR", [DLM_NOPURGED] = "DLM_NOPURGED", [DLM_BADARGS] = "DLM_BADARGS", [DLM_VOID] = "DLM_VOID", [DLM_NOTQUEUED] = "DLM_NOTQUEUED", [DLM_IVBUFLEN] = "DLM_IVBUFLEN", [DLM_CVTUNGRANT] = "DLM_CVTUNGRANT", [DLM_BADPARAM] = "DLM_BADPARAM", [DLM_VALNOTVALID] = "DLM_VALNOTVALID", [DLM_REJECTED] = "DLM_REJECTED", [DLM_ABORT] = "DLM_ABORT", [DLM_CANCEL] = "DLM_CANCEL", [DLM_IVRESHANDLE] = "DLM_IVRESHANDLE", [DLM_DEADLOCK] = "DLM_DEADLOCK", [DLM_DENIED_NOASTS] = "DLM_DENIED_NOASTS", [DLM_FORWARD] = "DLM_FORWARD", [DLM_TIMEOUT] = "DLM_TIMEOUT", [DLM_IVGROUPID] = "DLM_IVGROUPID", [DLM_VERS_CONFLICT] = "DLM_VERS_CONFLICT", [DLM_BAD_DEVICE_PATH] = "DLM_BAD_DEVICE_PATH", [DLM_NO_DEVICE_PERMISSION] = "DLM_NO_DEVICE_PERMISSION", [DLM_NO_CONTROL_DEVICE ] = "DLM_NO_CONTROL_DEVICE ", [DLM_RECOVERING] = "DLM_RECOVERING", [DLM_MIGRATING] = "DLM_MIGRATING", [DLM_MAXSTATS] = "DLM_MAXSTATS", }; static const char *dlm_errmsgs[] = { [DLM_NORMAL] = "request in progress", [DLM_GRANTED] = "request granted", [DLM_DENIED] = "request denied", [DLM_DENIED_NOLOCKS] = "request denied, out of system resources", [DLM_WORKING] = "async request in progress", [DLM_BLOCKED] = "lock request blocked", [DLM_BLOCKED_ORPHAN] = "lock request blocked by a orphan lock", [DLM_DENIED_GRACE_PERIOD] = "topological change in progress", [DLM_SYSERR] = "system error", [DLM_NOSUPPORT] = "unsupported", [DLM_CANCELGRANT] = "can't cancel convert: already granted", [DLM_IVLOCKID] = "bad lockid", [DLM_SYNC] = "synchronous request granted", [DLM_BADTYPE] = "bad resource type", [DLM_BADRESOURCE] = "bad resource handle", [DLM_MAXHANDLES] = "no more resource handles", [DLM_NOCLINFO] = "can't contact cluster manager", [DLM_NOLOCKMGR] = "can't contact lock manager", [DLM_NOPURGED] = "can't contact purge daemon", [DLM_BADARGS] = "bad api args", [DLM_VOID] = "no status", [DLM_NOTQUEUED] = "NOQUEUE was specified and request failed", [DLM_IVBUFLEN] = "invalid resource name length", [DLM_CVTUNGRANT] = "attempted to convert ungranted lock", [DLM_BADPARAM] = "invalid lock mode specified", [DLM_VALNOTVALID] = "value block has been invalidated", [DLM_REJECTED] = "request rejected, unrecognized client", [DLM_ABORT] = "blocked lock request cancelled", [DLM_CANCEL] = "conversion request cancelled", [DLM_IVRESHANDLE] = "invalid resource handle", [DLM_DEADLOCK] = "deadlock recovery refused this request", [DLM_DENIED_NOASTS] = "failed to allocate AST", [DLM_FORWARD] = "request must wait for primary's response", [DLM_TIMEOUT] = "timeout value for lock has expired", [DLM_IVGROUPID] = "invalid group specification", [DLM_VERS_CONFLICT] = "version conflicts prevent request handling", [DLM_BAD_DEVICE_PATH] = "Locks device does not exist or path wrong", [DLM_NO_DEVICE_PERMISSION] = "Client has insufficient perms for device", [DLM_NO_CONTROL_DEVICE] = "Cannot set options on opened device ", [DLM_RECOVERING] = "lock resource being recovered", [DLM_MIGRATING] = "lock resource being migrated", [DLM_MAXSTATS] = "invalid error number", }; const char *dlm_errmsg(enum dlm_status err) { if (err >= DLM_MAXSTATS || err < 0) return dlm_errmsgs[DLM_MAXSTATS]; return dlm_errmsgs[err]; } EXPORT_SYMBOL_GPL(dlm_errmsg); const char *dlm_errname(enum dlm_status err) { if (err >= DLM_MAXSTATS || err < 0) return dlm_errnames[DLM_MAXSTATS]; return dlm_errnames[err]; } EXPORT_SYMBOL_GPL(dlm_errname);