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Diffstat (limited to 'fs/ocfs2/dlm/dlmdebug.c')
| -rw-r--r-- | fs/ocfs2/dlm/dlmdebug.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c new file mode 100644 index 000000000000..f339fe27975a --- /dev/null +++ b/fs/ocfs2/dlm/dlmdebug.c @@ -0,0 +1,246 @@ +/* -*- 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=%"MLFu64", ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", + lock->ml.type, lock->ml.convert_type, lock->ml.node, 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=%"MLFu64", ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", + lock->ml.type, lock->ml.convert_type, lock->ml.node, 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=%"MLFu64", ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n", + lock->ml.type, lock->ml.convert_type, lock->ml.node, 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 list_head *iter; + struct list_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_SIZE; i++) { + bucket = &(dlm->resources[i]); + list_for_each(iter, bucket) { + res = list_entry(iter, struct dlm_lock_resource, list); + 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); |