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268 lines
9.2 KiB
268 lines
9.2 KiB
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* dlmdebug.c
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*
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* debug functionality for the dlm
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*
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* Copyright (C) 2004 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*
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*/
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/highmem.h>
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#include <linux/utsname.h>
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#include <linux/sysctl.h>
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#include <linux/spinlock.h>
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#include "cluster/heartbeat.h"
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#include "cluster/nodemanager.h"
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#include "cluster/tcp.h"
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#include "dlmapi.h"
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#include "dlmcommon.h"
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#include "dlmdomain.h"
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#define MLOG_MASK_PREFIX ML_DLM
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#include "cluster/masklog.h"
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void dlm_print_one_lock_resource(struct dlm_lock_resource *res)
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{
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mlog(ML_NOTICE, "lockres: %.*s, owner=%u, state=%u\n",
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res->lockname.len, res->lockname.name,
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res->owner, res->state);
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spin_lock(&res->spinlock);
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__dlm_print_one_lock_resource(res);
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spin_unlock(&res->spinlock);
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}
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static void dlm_print_lockres_refmap(struct dlm_lock_resource *res)
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{
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int bit;
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assert_spin_locked(&res->spinlock);
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mlog(ML_NOTICE, " refmap nodes: [ ");
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bit = 0;
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while (1) {
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bit = find_next_bit(res->refmap, O2NM_MAX_NODES, bit);
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if (bit >= O2NM_MAX_NODES)
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break;
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printk("%u ", bit);
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bit++;
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}
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printk("], inflight=%u\n", res->inflight_locks);
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}
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void __dlm_print_one_lock_resource(struct dlm_lock_resource *res)
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{
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struct list_head *iter2;
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struct dlm_lock *lock;
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assert_spin_locked(&res->spinlock);
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mlog(ML_NOTICE, "lockres: %.*s, owner=%u, state=%u\n",
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res->lockname.len, res->lockname.name,
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res->owner, res->state);
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mlog(ML_NOTICE, " last used: %lu, on purge list: %s\n",
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res->last_used, list_empty(&res->purge) ? "no" : "yes");
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dlm_print_lockres_refmap(res);
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mlog(ML_NOTICE, " granted queue: \n");
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list_for_each(iter2, &res->granted) {
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lock = list_entry(iter2, struct dlm_lock, list);
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spin_lock(&lock->spinlock);
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mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, "
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"cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n",
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lock->ml.type, lock->ml.convert_type, lock->ml.node,
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dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
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dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
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list_empty(&lock->ast_list) ? 'y' : 'n',
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lock->ast_pending ? 'y' : 'n',
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list_empty(&lock->bast_list) ? 'y' : 'n',
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lock->bast_pending ? 'y' : 'n');
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spin_unlock(&lock->spinlock);
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}
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mlog(ML_NOTICE, " converting queue: \n");
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list_for_each(iter2, &res->converting) {
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lock = list_entry(iter2, struct dlm_lock, list);
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spin_lock(&lock->spinlock);
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mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, "
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"cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n",
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lock->ml.type, lock->ml.convert_type, lock->ml.node,
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dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
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dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
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list_empty(&lock->ast_list) ? 'y' : 'n',
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lock->ast_pending ? 'y' : 'n',
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list_empty(&lock->bast_list) ? 'y' : 'n',
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lock->bast_pending ? 'y' : 'n');
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spin_unlock(&lock->spinlock);
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}
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mlog(ML_NOTICE, " blocked queue: \n");
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list_for_each(iter2, &res->blocked) {
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lock = list_entry(iter2, struct dlm_lock, list);
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spin_lock(&lock->spinlock);
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mlog(ML_NOTICE, " type=%d, conv=%d, node=%u, "
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"cookie=%u:%llu, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c)\n",
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lock->ml.type, lock->ml.convert_type, lock->ml.node,
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dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
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dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
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list_empty(&lock->ast_list) ? 'y' : 'n',
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lock->ast_pending ? 'y' : 'n',
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list_empty(&lock->bast_list) ? 'y' : 'n',
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lock->bast_pending ? 'y' : 'n');
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spin_unlock(&lock->spinlock);
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}
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}
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void dlm_print_one_lock(struct dlm_lock *lockid)
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{
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dlm_print_one_lock_resource(lockid->lockres);
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}
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EXPORT_SYMBOL_GPL(dlm_print_one_lock);
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#if 0
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void dlm_dump_lock_resources(struct dlm_ctxt *dlm)
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{
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struct dlm_lock_resource *res;
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struct hlist_node *iter;
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struct hlist_head *bucket;
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int i;
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mlog(ML_NOTICE, "struct dlm_ctxt: %s, node=%u, key=%u\n",
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dlm->name, dlm->node_num, dlm->key);
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if (!dlm || !dlm->name) {
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mlog(ML_ERROR, "dlm=%p\n", dlm);
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return;
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}
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spin_lock(&dlm->spinlock);
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for (i=0; i<DLM_HASH_BUCKETS; i++) {
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bucket = dlm_lockres_hash(dlm, i);
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hlist_for_each_entry(res, iter, bucket, hash_node)
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dlm_print_one_lock_resource(res);
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}
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spin_unlock(&dlm->spinlock);
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}
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#endif /* 0 */
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static const char *dlm_errnames[] = {
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[DLM_NORMAL] = "DLM_NORMAL",
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[DLM_GRANTED] = "DLM_GRANTED",
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[DLM_DENIED] = "DLM_DENIED",
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[DLM_DENIED_NOLOCKS] = "DLM_DENIED_NOLOCKS",
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[DLM_WORKING] = "DLM_WORKING",
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[DLM_BLOCKED] = "DLM_BLOCKED",
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[DLM_BLOCKED_ORPHAN] = "DLM_BLOCKED_ORPHAN",
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[DLM_DENIED_GRACE_PERIOD] = "DLM_DENIED_GRACE_PERIOD",
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[DLM_SYSERR] = "DLM_SYSERR",
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[DLM_NOSUPPORT] = "DLM_NOSUPPORT",
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[DLM_CANCELGRANT] = "DLM_CANCELGRANT",
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[DLM_IVLOCKID] = "DLM_IVLOCKID",
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[DLM_SYNC] = "DLM_SYNC",
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[DLM_BADTYPE] = "DLM_BADTYPE",
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[DLM_BADRESOURCE] = "DLM_BADRESOURCE",
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[DLM_MAXHANDLES] = "DLM_MAXHANDLES",
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[DLM_NOCLINFO] = "DLM_NOCLINFO",
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[DLM_NOLOCKMGR] = "DLM_NOLOCKMGR",
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[DLM_NOPURGED] = "DLM_NOPURGED",
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[DLM_BADARGS] = "DLM_BADARGS",
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[DLM_VOID] = "DLM_VOID",
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[DLM_NOTQUEUED] = "DLM_NOTQUEUED",
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[DLM_IVBUFLEN] = "DLM_IVBUFLEN",
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[DLM_CVTUNGRANT] = "DLM_CVTUNGRANT",
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[DLM_BADPARAM] = "DLM_BADPARAM",
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[DLM_VALNOTVALID] = "DLM_VALNOTVALID",
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[DLM_REJECTED] = "DLM_REJECTED",
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[DLM_ABORT] = "DLM_ABORT",
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[DLM_CANCEL] = "DLM_CANCEL",
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[DLM_IVRESHANDLE] = "DLM_IVRESHANDLE",
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[DLM_DEADLOCK] = "DLM_DEADLOCK",
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[DLM_DENIED_NOASTS] = "DLM_DENIED_NOASTS",
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[DLM_FORWARD] = "DLM_FORWARD",
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[DLM_TIMEOUT] = "DLM_TIMEOUT",
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[DLM_IVGROUPID] = "DLM_IVGROUPID",
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[DLM_VERS_CONFLICT] = "DLM_VERS_CONFLICT",
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[DLM_BAD_DEVICE_PATH] = "DLM_BAD_DEVICE_PATH",
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[DLM_NO_DEVICE_PERMISSION] = "DLM_NO_DEVICE_PERMISSION",
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[DLM_NO_CONTROL_DEVICE ] = "DLM_NO_CONTROL_DEVICE ",
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[DLM_RECOVERING] = "DLM_RECOVERING",
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[DLM_MIGRATING] = "DLM_MIGRATING",
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[DLM_MAXSTATS] = "DLM_MAXSTATS",
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};
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static const char *dlm_errmsgs[] = {
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[DLM_NORMAL] = "request in progress",
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[DLM_GRANTED] = "request granted",
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[DLM_DENIED] = "request denied",
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[DLM_DENIED_NOLOCKS] = "request denied, out of system resources",
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[DLM_WORKING] = "async request in progress",
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[DLM_BLOCKED] = "lock request blocked",
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[DLM_BLOCKED_ORPHAN] = "lock request blocked by a orphan lock",
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[DLM_DENIED_GRACE_PERIOD] = "topological change in progress",
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[DLM_SYSERR] = "system error",
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[DLM_NOSUPPORT] = "unsupported",
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[DLM_CANCELGRANT] = "can't cancel convert: already granted",
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[DLM_IVLOCKID] = "bad lockid",
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[DLM_SYNC] = "synchronous request granted",
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[DLM_BADTYPE] = "bad resource type",
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[DLM_BADRESOURCE] = "bad resource handle",
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[DLM_MAXHANDLES] = "no more resource handles",
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[DLM_NOCLINFO] = "can't contact cluster manager",
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[DLM_NOLOCKMGR] = "can't contact lock manager",
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[DLM_NOPURGED] = "can't contact purge daemon",
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[DLM_BADARGS] = "bad api args",
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[DLM_VOID] = "no status",
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[DLM_NOTQUEUED] = "NOQUEUE was specified and request failed",
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[DLM_IVBUFLEN] = "invalid resource name length",
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[DLM_CVTUNGRANT] = "attempted to convert ungranted lock",
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[DLM_BADPARAM] = "invalid lock mode specified",
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[DLM_VALNOTVALID] = "value block has been invalidated",
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[DLM_REJECTED] = "request rejected, unrecognized client",
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[DLM_ABORT] = "blocked lock request cancelled",
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[DLM_CANCEL] = "conversion request cancelled",
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[DLM_IVRESHANDLE] = "invalid resource handle",
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[DLM_DEADLOCK] = "deadlock recovery refused this request",
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[DLM_DENIED_NOASTS] = "failed to allocate AST",
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[DLM_FORWARD] = "request must wait for primary's response",
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[DLM_TIMEOUT] = "timeout value for lock has expired",
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[DLM_IVGROUPID] = "invalid group specification",
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[DLM_VERS_CONFLICT] = "version conflicts prevent request handling",
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[DLM_BAD_DEVICE_PATH] = "Locks device does not exist or path wrong",
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[DLM_NO_DEVICE_PERMISSION] = "Client has insufficient perms for device",
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[DLM_NO_CONTROL_DEVICE] = "Cannot set options on opened device ",
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[DLM_RECOVERING] = "lock resource being recovered",
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[DLM_MIGRATING] = "lock resource being migrated",
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[DLM_MAXSTATS] = "invalid error number",
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};
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const char *dlm_errmsg(enum dlm_status err)
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{
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if (err >= DLM_MAXSTATS || err < 0)
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return dlm_errmsgs[DLM_MAXSTATS];
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return dlm_errmsgs[err];
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}
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EXPORT_SYMBOL_GPL(dlm_errmsg);
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const char *dlm_errname(enum dlm_status err)
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{
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if (err >= DLM_MAXSTATS || err < 0)
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return dlm_errnames[DLM_MAXSTATS];
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return dlm_errnames[err];
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}
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EXPORT_SYMBOL_GPL(dlm_errname);
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