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@@ -5,7 +5,7 @@
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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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+ * Copyright (C) 2004, 2008 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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@@ -30,6 +30,7 @@
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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 <linux/debugfs.h>
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#include "cluster/heartbeat.h"
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#include "cluster/nodemanager.h"
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@@ -37,17 +38,16 @@
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#include "dlmapi.h"
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#include "dlmcommon.h"
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-
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#include "dlmdomain.h"
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+#include "dlmdebug.h"
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#define MLOG_MASK_PREFIX ML_DLM
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#include "cluster/masklog.h"
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+int stringify_lockname(const char *lockname, int locklen, char *buf, int len);
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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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- 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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@@ -58,7 +58,7 @@ static void dlm_print_lockres_refmap(struct dlm_lock_resource *res)
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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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+ printk(" 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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@@ -70,63 +70,66 @@ static void dlm_print_lockres_refmap(struct dlm_lock_resource *res)
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printk("], inflight=%u\n", res->inflight_locks);
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}
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+static void __dlm_print_lock(struct dlm_lock *lock)
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+{
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+ spin_lock(&lock->spinlock);
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+
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+ printk(" type=%d, conv=%d, node=%u, cookie=%u:%llu, "
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+ "ref=%u, ast=(empty=%c,pend=%c), bast=(empty=%c,pend=%c), "
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+ "pending=(conv=%c,lock=%c,cancel=%c,unlock=%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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+ atomic_read(&lock->lock_refs.refcount),
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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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+ (lock->convert_pending ? 'y' : 'n'),
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+ (lock->lock_pending ? 'y' : 'n'),
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+ (lock->cancel_pending ? 'y' : 'n'),
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+ (lock->unlock_pending ? 'y' : 'n'));
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+
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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_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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+ char buf[DLM_LOCKID_NAME_MAX];
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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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+ stringify_lockname(res->lockname.name, res->lockname.len,
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+ buf, sizeof(buf) - 1);
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+ printk("lockres: %s, owner=%u, state=%u\n",
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+ buf, res->owner, res->state);
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+ printk(" last used: %lu, refcnt: %u, on purge list: %s\n",
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+ res->last_used, atomic_read(&res->refs.refcount),
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+ list_empty(&res->purge) ? "no" : "yes");
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+ printk(" on dirty list: %s, on reco list: %s, "
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+ "migrating pending: %s\n",
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+ list_empty(&res->dirty) ? "no" : "yes",
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+ list_empty(&res->recovering) ? "no" : "yes",
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+ res->migration_pending ? "yes" : "no");
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+ printk(" inflight locks: %d, asts reserved: %d\n",
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+ res->inflight_locks, atomic_read(&res->asts_reserved));
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dlm_print_lockres_refmap(res);
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- mlog(ML_NOTICE, " granted queue: \n");
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+ printk(" 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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+ __dlm_print_lock(lock);
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}
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- mlog(ML_NOTICE, " converting queue: \n");
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+ printk(" 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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+ __dlm_print_lock(lock);
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}
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- mlog(ML_NOTICE, " blocked queue: \n");
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+ printk(" 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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+ __dlm_print_lock(lock);
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}
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}
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@@ -136,31 +139,6 @@ void dlm_print_one_lock(struct dlm_lock *lockid)
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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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-
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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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-
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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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-
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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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@@ -266,3 +244,792 @@ const char *dlm_errname(enum dlm_status err)
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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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+
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+/* NOTE: This function converts a lockname into a string. It uses knowledge
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+ * of the format of the lockname that should be outside the purview of the dlm.
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+ * We are adding only to make dlm debugging slightly easier.
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+ *
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+ * For more on lockname formats, please refer to dlmglue.c and ocfs2_lockid.h.
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+ */
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+int stringify_lockname(const char *lockname, int locklen, char *buf, int len)
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+{
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+ int out = 0;
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+ __be64 inode_blkno_be;
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+
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+#define OCFS2_DENTRY_LOCK_INO_START 18
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+ if (*lockname == 'N') {
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+ memcpy((__be64 *)&inode_blkno_be,
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+ (char *)&lockname[OCFS2_DENTRY_LOCK_INO_START],
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+ sizeof(__be64));
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+ out += snprintf(buf + out, len - out, "%.*s%08x",
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+ OCFS2_DENTRY_LOCK_INO_START - 1, lockname,
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+ (unsigned int)be64_to_cpu(inode_blkno_be));
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+ } else
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+ out += snprintf(buf + out, len - out, "%.*s",
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+ locklen, lockname);
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+ return out;
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+}
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+
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+static int stringify_nodemap(unsigned long *nodemap, int maxnodes,
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+ char *buf, int len)
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+{
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+ int out = 0;
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+ int i = -1;
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+
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+ while ((i = find_next_bit(nodemap, maxnodes, i + 1)) < maxnodes)
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+ out += snprintf(buf + out, len - out, "%d ", i);
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+
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+ return out;
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+}
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+
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+static int dump_mle(struct dlm_master_list_entry *mle, char *buf, int len)
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+{
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+ int out = 0;
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+ unsigned int namelen;
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+ const char *name;
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+ char *mle_type;
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+
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+ if (mle->type != DLM_MLE_MASTER) {
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+ namelen = mle->u.name.len;
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+ name = mle->u.name.name;
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+ } else {
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+ namelen = mle->u.res->lockname.len;
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+ name = mle->u.res->lockname.name;
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+ }
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+
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+ if (mle->type == DLM_MLE_BLOCK)
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+ mle_type = "BLK";
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+ else if (mle->type == DLM_MLE_MASTER)
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+ mle_type = "MAS";
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+ else
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+ mle_type = "MIG";
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+
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+ out += stringify_lockname(name, namelen, buf + out, len - out);
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+ out += snprintf(buf + out, len - out,
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+ "\t%3s\tmas=%3u\tnew=%3u\tevt=%1d\tuse=%1d\tref=%3d\n",
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+ mle_type, mle->master, mle->new_master,
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+ !list_empty(&mle->hb_events),
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+ !!mle->inuse,
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+ atomic_read(&mle->mle_refs.refcount));
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+
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+ out += snprintf(buf + out, len - out, "Maybe=");
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+ out += stringify_nodemap(mle->maybe_map, O2NM_MAX_NODES,
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+ buf + out, len - out);
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+ out += snprintf(buf + out, len - out, "\n");
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+
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+ out += snprintf(buf + out, len - out, "Vote=");
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+ out += stringify_nodemap(mle->vote_map, O2NM_MAX_NODES,
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+ buf + out, len - out);
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+ out += snprintf(buf + out, len - out, "\n");
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+
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+ out += snprintf(buf + out, len - out, "Response=");
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+ out += stringify_nodemap(mle->response_map, O2NM_MAX_NODES,
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+ buf + out, len - out);
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+ out += snprintf(buf + out, len - out, "\n");
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+
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+ out += snprintf(buf + out, len - out, "Node=");
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+ out += stringify_nodemap(mle->node_map, O2NM_MAX_NODES,
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+ buf + out, len - out);
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+ out += snprintf(buf + out, len - out, "\n");
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+
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+ out += snprintf(buf + out, len - out, "\n");
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+
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+ return out;
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+}
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+
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+void dlm_print_one_mle(struct dlm_master_list_entry *mle)
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+{
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+ char *buf;
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+
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+ buf = (char *) get_zeroed_page(GFP_NOFS);
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+ if (buf) {
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+ dump_mle(mle, buf, PAGE_SIZE - 1);
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+ free_page((unsigned long)buf);
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+ }
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+}
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+
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+#ifdef CONFIG_DEBUG_FS
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+
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+static struct dentry *dlm_debugfs_root = NULL;
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+
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+#define DLM_DEBUGFS_DIR "o2dlm"
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+#define DLM_DEBUGFS_DLM_STATE "dlm_state"
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+#define DLM_DEBUGFS_LOCKING_STATE "locking_state"
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+#define DLM_DEBUGFS_MLE_STATE "mle_state"
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+#define DLM_DEBUGFS_PURGE_LIST "purge_list"
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+
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+/* begin - utils funcs */
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+static void dlm_debug_free(struct kref *kref)
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+{
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+ struct dlm_debug_ctxt *dc;
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+
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+ dc = container_of(kref, struct dlm_debug_ctxt, debug_refcnt);
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+
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+ kfree(dc);
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+}
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+
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+void dlm_debug_put(struct dlm_debug_ctxt *dc)
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+{
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+ if (dc)
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+ kref_put(&dc->debug_refcnt, dlm_debug_free);
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+}
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+
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+static void dlm_debug_get(struct dlm_debug_ctxt *dc)
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+{
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+ kref_get(&dc->debug_refcnt);
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+}
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+
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+static struct debug_buffer *debug_buffer_allocate(void)
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+{
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+ struct debug_buffer *db = NULL;
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+
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+ db = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL);
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+ if (!db)
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+ goto bail;
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+
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+ db->len = PAGE_SIZE;
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+ db->buf = kmalloc(db->len, GFP_KERNEL);
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+ if (!db->buf)
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+ goto bail;
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+
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+ return db;
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+bail:
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+ kfree(db);
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+ return NULL;
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+}
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+
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+static ssize_t debug_buffer_read(struct file *file, char __user *buf,
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+ size_t nbytes, loff_t *ppos)
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+{
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+ struct debug_buffer *db = file->private_data;
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+
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+ return simple_read_from_buffer(buf, nbytes, ppos, db->buf, db->len);
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+}
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+
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+static loff_t debug_buffer_llseek(struct file *file, loff_t off, int whence)
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+{
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+ struct debug_buffer *db = file->private_data;
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+ loff_t new = -1;
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+
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+ switch (whence) {
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+ case 0:
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+ new = off;
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+ break;
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+ case 1:
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+ new = file->f_pos + off;
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+ break;
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+ }
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|
|
+
|
|
|
+ if (new < 0 || new > db->len)
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ return (file->f_pos = new);
|
|
|
+}
|
|
|
+
|
|
|
+static int debug_buffer_release(struct inode *inode, struct file *file)
|
|
|
+{
|
|
|
+ struct debug_buffer *db = (struct debug_buffer *)file->private_data;
|
|
|
+
|
|
|
+ if (db)
|
|
|
+ kfree(db->buf);
|
|
|
+ kfree(db);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+/* end - util funcs */
|
|
|
+
|
|
|
+/* begin - purge list funcs */
|
|
|
+static int debug_purgelist_print(struct dlm_ctxt *dlm, struct debug_buffer *db)
|
|
|
+{
|
|
|
+ struct dlm_lock_resource *res;
|
|
|
+ int out = 0;
|
|
|
+ unsigned long total = 0;
|
|
|
+
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Dumping Purgelist for Domain: %s\n", dlm->name);
|
|
|
+
|
|
|
+ spin_lock(&dlm->spinlock);
|
|
|
+ list_for_each_entry(res, &dlm->purge_list, purge) {
|
|
|
+ ++total;
|
|
|
+ if (db->len - out < 100)
|
|
|
+ continue;
|
|
|
+ spin_lock(&res->spinlock);
|
|
|
+ out += stringify_lockname(res->lockname.name,
|
|
|
+ res->lockname.len,
|
|
|
+ db->buf + out, db->len - out);
|
|
|
+ out += snprintf(db->buf + out, db->len - out, "\t%ld\n",
|
|
|
+ (jiffies - res->last_used)/HZ);
|
|
|
+ spin_unlock(&res->spinlock);
|
|
|
+ }
|
|
|
+ spin_unlock(&dlm->spinlock);
|
|
|
+
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Total on list: %ld\n", total);
|
|
|
+
|
|
|
+ return out;
|
|
|
+}
|
|
|
+
|
|
|
+static int debug_purgelist_open(struct inode *inode, struct file *file)
|
|
|
+{
|
|
|
+ struct dlm_ctxt *dlm = inode->i_private;
|
|
|
+ struct debug_buffer *db;
|
|
|
+
|
|
|
+ db = debug_buffer_allocate();
|
|
|
+ if (!db)
|
|
|
+ goto bail;
|
|
|
+
|
|
|
+ db->len = debug_purgelist_print(dlm, db);
|
|
|
+
|
|
|
+ file->private_data = db;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+bail:
|
|
|
+ return -ENOMEM;
|
|
|
+}
|
|
|
+
|
|
|
+static struct file_operations debug_purgelist_fops = {
|
|
|
+ .open = debug_purgelist_open,
|
|
|
+ .release = debug_buffer_release,
|
|
|
+ .read = debug_buffer_read,
|
|
|
+ .llseek = debug_buffer_llseek,
|
|
|
+};
|
|
|
+/* end - purge list funcs */
|
|
|
+
|
|
|
+/* begin - debug mle funcs */
|
|
|
+static int debug_mle_print(struct dlm_ctxt *dlm, struct debug_buffer *db)
|
|
|
+{
|
|
|
+ struct dlm_master_list_entry *mle;
|
|
|
+ int out = 0;
|
|
|
+ unsigned long total = 0;
|
|
|
+
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Dumping MLEs for Domain: %s\n", dlm->name);
|
|
|
+
|
|
|
+ spin_lock(&dlm->master_lock);
|
|
|
+ list_for_each_entry(mle, &dlm->master_list, list) {
|
|
|
+ ++total;
|
|
|
+ if (db->len - out < 200)
|
|
|
+ continue;
|
|
|
+ out += dump_mle(mle, db->buf + out, db->len - out);
|
|
|
+ }
|
|
|
+ spin_unlock(&dlm->master_lock);
|
|
|
+
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Total on list: %ld\n", total);
|
|
|
+ return out;
|
|
|
+}
|
|
|
+
|
|
|
+static int debug_mle_open(struct inode *inode, struct file *file)
|
|
|
+{
|
|
|
+ struct dlm_ctxt *dlm = inode->i_private;
|
|
|
+ struct debug_buffer *db;
|
|
|
+
|
|
|
+ db = debug_buffer_allocate();
|
|
|
+ if (!db)
|
|
|
+ goto bail;
|
|
|
+
|
|
|
+ db->len = debug_mle_print(dlm, db);
|
|
|
+
|
|
|
+ file->private_data = db;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+bail:
|
|
|
+ return -ENOMEM;
|
|
|
+}
|
|
|
+
|
|
|
+static struct file_operations debug_mle_fops = {
|
|
|
+ .open = debug_mle_open,
|
|
|
+ .release = debug_buffer_release,
|
|
|
+ .read = debug_buffer_read,
|
|
|
+ .llseek = debug_buffer_llseek,
|
|
|
+};
|
|
|
+
|
|
|
+/* end - debug mle funcs */
|
|
|
+
|
|
|
+/* begin - debug lockres funcs */
|
|
|
+static int dump_lock(struct dlm_lock *lock, int list_type, char *buf, int len)
|
|
|
+{
|
|
|
+ int out;
|
|
|
+
|
|
|
+#define DEBUG_LOCK_VERSION 1
|
|
|
+ spin_lock(&lock->spinlock);
|
|
|
+ out = snprintf(buf, len, "LOCK:%d,%d,%d,%d,%d,%d:%lld,%d,%d,%d,%d,%d,"
|
|
|
+ "%d,%d,%d,%d\n",
|
|
|
+ DEBUG_LOCK_VERSION,
|
|
|
+ list_type, lock->ml.type, lock->ml.convert_type,
|
|
|
+ lock->ml.node,
|
|
|
+ dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
|
|
|
+ dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
|
|
|
+ !list_empty(&lock->ast_list),
|
|
|
+ !list_empty(&lock->bast_list),
|
|
|
+ lock->ast_pending, lock->bast_pending,
|
|
|
+ lock->convert_pending, lock->lock_pending,
|
|
|
+ lock->cancel_pending, lock->unlock_pending,
|
|
|
+ atomic_read(&lock->lock_refs.refcount));
|
|
|
+ spin_unlock(&lock->spinlock);
|
|
|
+
|
|
|
+ return out;
|
|
|
+}
|
|
|
+
|
|
|
+static int dump_lockres(struct dlm_lock_resource *res, char *buf, int len)
|
|
|
+{
|
|
|
+ struct dlm_lock *lock;
|
|
|
+ int i;
|
|
|
+ int out = 0;
|
|
|
+
|
|
|
+ out += snprintf(buf + out, len - out, "NAME:");
|
|
|
+ out += stringify_lockname(res->lockname.name, res->lockname.len,
|
|
|
+ buf + out, len - out);
|
|
|
+ out += snprintf(buf + out, len - out, "\n");
|
|
|
+
|
|
|
+#define DEBUG_LRES_VERSION 1
|
|
|
+ out += snprintf(buf + out, len - out,
|
|
|
+ "LRES:%d,%d,%d,%ld,%d,%d,%d,%d,%d,%d,%d\n",
|
|
|
+ DEBUG_LRES_VERSION,
|
|
|
+ res->owner, res->state, res->last_used,
|
|
|
+ !list_empty(&res->purge),
|
|
|
+ !list_empty(&res->dirty),
|
|
|
+ !list_empty(&res->recovering),
|
|
|
+ res->inflight_locks, res->migration_pending,
|
|
|
+ atomic_read(&res->asts_reserved),
|
|
|
+ atomic_read(&res->refs.refcount));
|
|
|
+
|
|
|
+ /* refmap */
|
|
|
+ out += snprintf(buf + out, len - out, "RMAP:");
|
|
|
+ out += stringify_nodemap(res->refmap, O2NM_MAX_NODES,
|
|
|
+ buf + out, len - out);
|
|
|
+ out += snprintf(buf + out, len - out, "\n");
|
|
|
+
|
|
|
+ /* lvb */
|
|
|
+ out += snprintf(buf + out, len - out, "LVBX:");
|
|
|
+ for (i = 0; i < DLM_LVB_LEN; i++)
|
|
|
+ out += snprintf(buf + out, len - out,
|
|
|
+ "%02x", (unsigned char)res->lvb[i]);
|
|
|
+ out += snprintf(buf + out, len - out, "\n");
|
|
|
+
|
|
|
+ /* granted */
|
|
|
+ list_for_each_entry(lock, &res->granted, list)
|
|
|
+ out += dump_lock(lock, 0, buf + out, len - out);
|
|
|
+
|
|
|
+ /* converting */
|
|
|
+ list_for_each_entry(lock, &res->converting, list)
|
|
|
+ out += dump_lock(lock, 1, buf + out, len - out);
|
|
|
+
|
|
|
+ /* blocked */
|
|
|
+ list_for_each_entry(lock, &res->blocked, list)
|
|
|
+ out += dump_lock(lock, 2, buf + out, len - out);
|
|
|
+
|
|
|
+ out += snprintf(buf + out, len - out, "\n");
|
|
|
+
|
|
|
+ return out;
|
|
|
+}
|
|
|
+
|
|
|
+static void *lockres_seq_start(struct seq_file *m, loff_t *pos)
|
|
|
+{
|
|
|
+ struct debug_lockres *dl = m->private;
|
|
|
+ struct dlm_ctxt *dlm = dl->dl_ctxt;
|
|
|
+ struct dlm_lock_resource *res = NULL;
|
|
|
+
|
|
|
+ spin_lock(&dlm->spinlock);
|
|
|
+
|
|
|
+ if (dl->dl_res) {
|
|
|
+ list_for_each_entry(res, &dl->dl_res->tracking, tracking) {
|
|
|
+ if (dl->dl_res) {
|
|
|
+ dlm_lockres_put(dl->dl_res);
|
|
|
+ dl->dl_res = NULL;
|
|
|
+ }
|
|
|
+ if (&res->tracking == &dlm->tracking_list) {
|
|
|
+ mlog(0, "End of list found, %p\n", res);
|
|
|
+ dl = NULL;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ dlm_lockres_get(res);
|
|
|
+ dl->dl_res = res;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ if (!list_empty(&dlm->tracking_list)) {
|
|
|
+ list_for_each_entry(res, &dlm->tracking_list, tracking)
|
|
|
+ break;
|
|
|
+ dlm_lockres_get(res);
|
|
|
+ dl->dl_res = res;
|
|
|
+ } else
|
|
|
+ dl = NULL;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (dl) {
|
|
|
+ spin_lock(&dl->dl_res->spinlock);
|
|
|
+ dump_lockres(dl->dl_res, dl->dl_buf, dl->dl_len - 1);
|
|
|
+ spin_unlock(&dl->dl_res->spinlock);
|
|
|
+ }
|
|
|
+
|
|
|
+ spin_unlock(&dlm->spinlock);
|
|
|
+
|
|
|
+ return dl;
|
|
|
+}
|
|
|
+
|
|
|
+static void lockres_seq_stop(struct seq_file *m, void *v)
|
|
|
+{
|
|
|
+}
|
|
|
+
|
|
|
+static void *lockres_seq_next(struct seq_file *m, void *v, loff_t *pos)
|
|
|
+{
|
|
|
+ return NULL;
|
|
|
+}
|
|
|
+
|
|
|
+static int lockres_seq_show(struct seq_file *s, void *v)
|
|
|
+{
|
|
|
+ struct debug_lockres *dl = (struct debug_lockres *)v;
|
|
|
+
|
|
|
+ seq_printf(s, "%s", dl->dl_buf);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static struct seq_operations debug_lockres_ops = {
|
|
|
+ .start = lockres_seq_start,
|
|
|
+ .stop = lockres_seq_stop,
|
|
|
+ .next = lockres_seq_next,
|
|
|
+ .show = lockres_seq_show,
|
|
|
+};
|
|
|
+
|
|
|
+static int debug_lockres_open(struct inode *inode, struct file *file)
|
|
|
+{
|
|
|
+ struct dlm_ctxt *dlm = inode->i_private;
|
|
|
+ int ret = -ENOMEM;
|
|
|
+ struct seq_file *seq;
|
|
|
+ struct debug_lockres *dl = NULL;
|
|
|
+
|
|
|
+ dl = kzalloc(sizeof(struct debug_lockres), GFP_KERNEL);
|
|
|
+ if (!dl) {
|
|
|
+ mlog_errno(ret);
|
|
|
+ goto bail;
|
|
|
+ }
|
|
|
+
|
|
|
+ dl->dl_len = PAGE_SIZE;
|
|
|
+ dl->dl_buf = kmalloc(dl->dl_len, GFP_KERNEL);
|
|
|
+ if (!dl->dl_buf) {
|
|
|
+ mlog_errno(ret);
|
|
|
+ goto bail;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = seq_open(file, &debug_lockres_ops);
|
|
|
+ if (ret) {
|
|
|
+ mlog_errno(ret);
|
|
|
+ goto bail;
|
|
|
+ }
|
|
|
+
|
|
|
+ seq = (struct seq_file *) file->private_data;
|
|
|
+ seq->private = dl;
|
|
|
+
|
|
|
+ dlm_grab(dlm);
|
|
|
+ dl->dl_ctxt = dlm;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+bail:
|
|
|
+ if (dl)
|
|
|
+ kfree(dl->dl_buf);
|
|
|
+ kfree(dl);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int debug_lockres_release(struct inode *inode, struct file *file)
|
|
|
+{
|
|
|
+ struct seq_file *seq = (struct seq_file *)file->private_data;
|
|
|
+ struct debug_lockres *dl = (struct debug_lockres *)seq->private;
|
|
|
+
|
|
|
+ if (dl->dl_res)
|
|
|
+ dlm_lockres_put(dl->dl_res);
|
|
|
+ dlm_put(dl->dl_ctxt);
|
|
|
+ kfree(dl->dl_buf);
|
|
|
+ return seq_release_private(inode, file);
|
|
|
+}
|
|
|
+
|
|
|
+static struct file_operations debug_lockres_fops = {
|
|
|
+ .open = debug_lockres_open,
|
|
|
+ .release = debug_lockres_release,
|
|
|
+ .read = seq_read,
|
|
|
+ .llseek = seq_lseek,
|
|
|
+};
|
|
|
+/* end - debug lockres funcs */
|
|
|
+
|
|
|
+/* begin - debug state funcs */
|
|
|
+static int debug_state_print(struct dlm_ctxt *dlm, struct debug_buffer *db)
|
|
|
+{
|
|
|
+ int out = 0;
|
|
|
+ struct dlm_reco_node_data *node;
|
|
|
+ char *state;
|
|
|
+ int lres, rres, ures, tres;
|
|
|
+
|
|
|
+ lres = atomic_read(&dlm->local_resources);
|
|
|
+ rres = atomic_read(&dlm->remote_resources);
|
|
|
+ ures = atomic_read(&dlm->unknown_resources);
|
|
|
+ tres = lres + rres + ures;
|
|
|
+
|
|
|
+ spin_lock(&dlm->spinlock);
|
|
|
+
|
|
|
+ switch (dlm->dlm_state) {
|
|
|
+ case DLM_CTXT_NEW:
|
|
|
+ state = "NEW"; break;
|
|
|
+ case DLM_CTXT_JOINED:
|
|
|
+ state = "JOINED"; break;
|
|
|
+ case DLM_CTXT_IN_SHUTDOWN:
|
|
|
+ state = "SHUTDOWN"; break;
|
|
|
+ case DLM_CTXT_LEAVING:
|
|
|
+ state = "LEAVING"; break;
|
|
|
+ default:
|
|
|
+ state = "UNKNOWN"; break;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Domain: xxxxxxxxxx Key: 0xdfbac769 */
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Domain: %s Key: 0x%08x\n", dlm->name, dlm->key);
|
|
|
+
|
|
|
+ /* Thread Pid: xxx Node: xxx State: xxxxx */
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Thread Pid: %d Node: %d State: %s\n",
|
|
|
+ dlm->dlm_thread_task->pid, dlm->node_num, state);
|
|
|
+
|
|
|
+ /* Number of Joins: xxx Joining Node: xxx */
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Number of Joins: %d Joining Node: %d\n",
|
|
|
+ dlm->num_joins, dlm->joining_node);
|
|
|
+
|
|
|
+ /* Domain Map: xx xx xx */
|
|
|
+ out += snprintf(db->buf + out, db->len - out, "Domain Map: ");
|
|
|
+ out += stringify_nodemap(dlm->domain_map, O2NM_MAX_NODES,
|
|
|
+ db->buf + out, db->len - out);
|
|
|
+ out += snprintf(db->buf + out, db->len - out, "\n");
|
|
|
+
|
|
|
+ /* Live Map: xx xx xx */
|
|
|
+ out += snprintf(db->buf + out, db->len - out, "Live Map: ");
|
|
|
+ out += stringify_nodemap(dlm->live_nodes_map, O2NM_MAX_NODES,
|
|
|
+ db->buf + out, db->len - out);
|
|
|
+ out += snprintf(db->buf + out, db->len - out, "\n");
|
|
|
+
|
|
|
+ /* Mastered Resources Total: xxx Locally: xxx Remotely: ... */
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Mastered Resources Total: %d Locally: %d "
|
|
|
+ "Remotely: %d Unknown: %d\n",
|
|
|
+ tres, lres, rres, ures);
|
|
|
+
|
|
|
+ /* Lists: Dirty=Empty Purge=InUse PendingASTs=Empty ... */
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Lists: Dirty=%s Purge=%s PendingASTs=%s "
|
|
|
+ "PendingBASTs=%s Master=%s\n",
|
|
|
+ (list_empty(&dlm->dirty_list) ? "Empty" : "InUse"),
|
|
|
+ (list_empty(&dlm->purge_list) ? "Empty" : "InUse"),
|
|
|
+ (list_empty(&dlm->pending_asts) ? "Empty" : "InUse"),
|
|
|
+ (list_empty(&dlm->pending_basts) ? "Empty" : "InUse"),
|
|
|
+ (list_empty(&dlm->master_list) ? "Empty" : "InUse"));
|
|
|
+
|
|
|
+ /* Purge Count: xxx Refs: xxx */
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Purge Count: %d Refs: %d\n", dlm->purge_count,
|
|
|
+ atomic_read(&dlm->dlm_refs.refcount));
|
|
|
+
|
|
|
+ /* Dead Node: xxx */
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Dead Node: %d\n", dlm->reco.dead_node);
|
|
|
+
|
|
|
+ /* What about DLM_RECO_STATE_FINALIZE? */
|
|
|
+ if (dlm->reco.state == DLM_RECO_STATE_ACTIVE)
|
|
|
+ state = "ACTIVE";
|
|
|
+ else
|
|
|
+ state = "INACTIVE";
|
|
|
+
|
|
|
+ /* Recovery Pid: xxxx Master: xxx State: xxxx */
|
|
|
+ out += snprintf(db->buf + out, db->len - out,
|
|
|
+ "Recovery Pid: %d Master: %d State: %s\n",
|
|
|
+ dlm->dlm_reco_thread_task->pid,
|
|
|
+ dlm->reco.new_master, state);
|
|
|
+
|
|
|
+ /* Recovery Map: xx xx */
|
|
|
+ out += snprintf(db->buf + out, db->len - out, "Recovery Map: ");
|
|
|
+ out += stringify_nodemap(dlm->recovery_map, O2NM_MAX_NODES,
|
|
|
+ db->buf + out, db->len - out);
|
|
|
+ out += snprintf(db->buf + out, db->len - out, "\n");
|
|
|
+
|
|
|
+ /* Recovery Node State: */
|
|
|
+ out += snprintf(db->buf + out, db->len - out, "Recovery Node State:\n");
|
|
|
+ list_for_each_entry(node, &dlm->reco.node_data, list) {
|
|
|
+ switch (node->state) {
|
|
|
+ case DLM_RECO_NODE_DATA_INIT:
|
|
|
+ state = "INIT";
|
|
|
+ break;
|
|
|
+ case DLM_RECO_NODE_DATA_REQUESTING:
|
|
|
+ state = "REQUESTING";
|
|
|
+ break;
|
|
|
+ case DLM_RECO_NODE_DATA_DEAD:
|
|
|
+ state = "DEAD";
|
|
|
+ break;
|
|
|
+ case DLM_RECO_NODE_DATA_RECEIVING:
|
|
|
+ state = "RECEIVING";
|
|
|
+ break;
|
|
|
+ case DLM_RECO_NODE_DATA_REQUESTED:
|
|
|
+ state = "REQUESTED";
|
|
|
+ break;
|
|
|
+ case DLM_RECO_NODE_DATA_DONE:
|
|
|
+ state = "DONE";
|
|
|
+ break;
|
|
|
+ case DLM_RECO_NODE_DATA_FINALIZE_SENT:
|
|
|
+ state = "FINALIZE-SENT";
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ state = "BAD";
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ out += snprintf(db->buf + out, db->len - out, "\t%u - %s\n",
|
|
|
+ node->node_num, state);
|
|
|
+ }
|
|
|
+
|
|
|
+ spin_unlock(&dlm->spinlock);
|
|
|
+
|
|
|
+ return out;
|
|
|
+}
|
|
|
+
|
|
|
+static int debug_state_open(struct inode *inode, struct file *file)
|
|
|
+{
|
|
|
+ struct dlm_ctxt *dlm = inode->i_private;
|
|
|
+ struct debug_buffer *db = NULL;
|
|
|
+
|
|
|
+ db = debug_buffer_allocate();
|
|
|
+ if (!db)
|
|
|
+ goto bail;
|
|
|
+
|
|
|
+ db->len = debug_state_print(dlm, db);
|
|
|
+
|
|
|
+ file->private_data = db;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+bail:
|
|
|
+ return -ENOMEM;
|
|
|
+}
|
|
|
+
|
|
|
+static struct file_operations debug_state_fops = {
|
|
|
+ .open = debug_state_open,
|
|
|
+ .release = debug_buffer_release,
|
|
|
+ .read = debug_buffer_read,
|
|
|
+ .llseek = debug_buffer_llseek,
|
|
|
+};
|
|
|
+/* end - debug state funcs */
|
|
|
+
|
|
|
+/* files in subroot */
|
|
|
+int dlm_debug_init(struct dlm_ctxt *dlm)
|
|
|
+{
|
|
|
+ struct dlm_debug_ctxt *dc = dlm->dlm_debug_ctxt;
|
|
|
+
|
|
|
+ /* for dumping dlm_ctxt */
|
|
|
+ dc->debug_state_dentry = debugfs_create_file(DLM_DEBUGFS_DLM_STATE,
|
|
|
+ S_IFREG|S_IRUSR,
|
|
|
+ dlm->dlm_debugfs_subroot,
|
|
|
+ dlm, &debug_state_fops);
|
|
|
+ if (!dc->debug_state_dentry) {
|
|
|
+ mlog_errno(-ENOMEM);
|
|
|
+ goto bail;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* for dumping lockres */
|
|
|
+ dc->debug_lockres_dentry =
|
|
|
+ debugfs_create_file(DLM_DEBUGFS_LOCKING_STATE,
|
|
|
+ S_IFREG|S_IRUSR,
|
|
|
+ dlm->dlm_debugfs_subroot,
|
|
|
+ dlm, &debug_lockres_fops);
|
|
|
+ if (!dc->debug_lockres_dentry) {
|
|
|
+ mlog_errno(-ENOMEM);
|
|
|
+ goto bail;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* for dumping mles */
|
|
|
+ dc->debug_mle_dentry = debugfs_create_file(DLM_DEBUGFS_MLE_STATE,
|
|
|
+ S_IFREG|S_IRUSR,
|
|
|
+ dlm->dlm_debugfs_subroot,
|
|
|
+ dlm, &debug_mle_fops);
|
|
|
+ if (!dc->debug_mle_dentry) {
|
|
|
+ mlog_errno(-ENOMEM);
|
|
|
+ goto bail;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* for dumping lockres on the purge list */
|
|
|
+ dc->debug_purgelist_dentry =
|
|
|
+ debugfs_create_file(DLM_DEBUGFS_PURGE_LIST,
|
|
|
+ S_IFREG|S_IRUSR,
|
|
|
+ dlm->dlm_debugfs_subroot,
|
|
|
+ dlm, &debug_purgelist_fops);
|
|
|
+ if (!dc->debug_purgelist_dentry) {
|
|
|
+ mlog_errno(-ENOMEM);
|
|
|
+ goto bail;
|
|
|
+ }
|
|
|
+
|
|
|
+ dlm_debug_get(dc);
|
|
|
+ return 0;
|
|
|
+
|
|
|
+bail:
|
|
|
+ dlm_debug_shutdown(dlm);
|
|
|
+ return -ENOMEM;
|
|
|
+}
|
|
|
+
|
|
|
+void dlm_debug_shutdown(struct dlm_ctxt *dlm)
|
|
|
+{
|
|
|
+ struct dlm_debug_ctxt *dc = dlm->dlm_debug_ctxt;
|
|
|
+
|
|
|
+ if (dc) {
|
|
|
+ if (dc->debug_purgelist_dentry)
|
|
|
+ debugfs_remove(dc->debug_purgelist_dentry);
|
|
|
+ if (dc->debug_mle_dentry)
|
|
|
+ debugfs_remove(dc->debug_mle_dentry);
|
|
|
+ if (dc->debug_lockres_dentry)
|
|
|
+ debugfs_remove(dc->debug_lockres_dentry);
|
|
|
+ if (dc->debug_state_dentry)
|
|
|
+ debugfs_remove(dc->debug_state_dentry);
|
|
|
+ dlm_debug_put(dc);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/* subroot - domain dir */
|
|
|
+int dlm_create_debugfs_subroot(struct dlm_ctxt *dlm)
|
|
|
+{
|
|
|
+ dlm->dlm_debugfs_subroot = debugfs_create_dir(dlm->name,
|
|
|
+ dlm_debugfs_root);
|
|
|
+ if (!dlm->dlm_debugfs_subroot) {
|
|
|
+ mlog_errno(-ENOMEM);
|
|
|
+ goto bail;
|
|
|
+ }
|
|
|
+
|
|
|
+ dlm->dlm_debug_ctxt = kzalloc(sizeof(struct dlm_debug_ctxt),
|
|
|
+ GFP_KERNEL);
|
|
|
+ if (!dlm->dlm_debug_ctxt) {
|
|
|
+ mlog_errno(-ENOMEM);
|
|
|
+ goto bail;
|
|
|
+ }
|
|
|
+ kref_init(&dlm->dlm_debug_ctxt->debug_refcnt);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+bail:
|
|
|
+ dlm_destroy_debugfs_subroot(dlm);
|
|
|
+ return -ENOMEM;
|
|
|
+}
|
|
|
+
|
|
|
+void dlm_destroy_debugfs_subroot(struct dlm_ctxt *dlm)
|
|
|
+{
|
|
|
+ if (dlm->dlm_debugfs_subroot)
|
|
|
+ debugfs_remove(dlm->dlm_debugfs_subroot);
|
|
|
+}
|
|
|
+
|
|
|
+/* debugfs root */
|
|
|
+int dlm_create_debugfs_root(void)
|
|
|
+{
|
|
|
+ dlm_debugfs_root = debugfs_create_dir(DLM_DEBUGFS_DIR, NULL);
|
|
|
+ if (!dlm_debugfs_root) {
|
|
|
+ mlog_errno(-ENOMEM);
|
|
|
+ return -ENOMEM;
|
|
|
+ }
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+void dlm_destroy_debugfs_root(void)
|
|
|
+{
|
|
|
+ if (dlm_debugfs_root)
|
|
|
+ debugfs_remove(dlm_debugfs_root);
|
|
|
+}
|
|
|
+#endif /* CONFIG_DEBUG_FS */
|