// SPDX-License-Identifier: GPL-2.0-or-later
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/* -*- 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, 2008 Oracle. All rights reserved.
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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/sysctl.h>
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#include <linux/spinlock.h>
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#include <linux/debugfs.h>
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#include <linux/export.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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#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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static int stringify_lockname(const char *lockname, int locklen, char *buf,
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int len);
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void dlm_print_one_lock_resource(struct dlm_lock_resource *res)
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{
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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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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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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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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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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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kref_read(&lock->lock_refs),
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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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spin_unlock(&lock->spinlock);
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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 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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stringify_lockname(res->lockname.name, res->lockname.len,
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buf, sizeof(buf));
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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, kref_read(&res->refs),
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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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printk(" granted queue:\n");
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list_for_each_entry(lock, &res->granted, list) {
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__dlm_print_lock(lock);
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}
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printk(" converting queue:\n");
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list_for_each_entry(lock, &res->converting, list) {
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__dlm_print_lock(lock);
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}
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printk(" blocked queue:\n");
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list_for_each_entry(lock, &res->blocked, list) {
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__dlm_print_lock(lock);
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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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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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/* 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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static int stringify_lockname(const char *lockname, int locklen, char *buf,
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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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#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 += scnprintf(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 += scnprintf(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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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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while ((i = find_next_bit(nodemap, maxnodes, i + 1)) < maxnodes)
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out += scnprintf(buf + out, len - out, "%d ", i);
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return out;
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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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char *mle_type;
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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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out += stringify_lockname(mle->mname, mle->mnamelen, buf + out, len - out);
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out += scnprintf(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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kref_read(&mle->mle_refs));
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out += scnprintf(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 += scnprintf(buf + out, len - out, "\n");
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out += scnprintf(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 += scnprintf(buf + out, len - out, "\n");
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out += scnprintf(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 += scnprintf(buf + out, len - out, "\n");
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out += scnprintf(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 += scnprintf(buf + out, len - out, "\n");
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out += scnprintf(buf + out, len - out, "\n");
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return out;
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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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buf = (char *) get_zeroed_page(GFP_ATOMIC);
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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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#ifdef CONFIG_DEBUG_FS
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static struct dentry *dlm_debugfs_root;
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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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/* begin - utils funcs */
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static int debug_release(struct inode *inode, struct file *file)
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{
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free_page((unsigned long)file->private_data);
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return 0;
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}
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static ssize_t debug_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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return simple_read_from_buffer(buf, nbytes, ppos, file->private_data,
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i_size_read(file->f_mapping->host));
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}
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/* end - util funcs */
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/* begin - purge list funcs */
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static int debug_purgelist_print(struct dlm_ctxt *dlm, char *buf, int len)
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{
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struct dlm_lock_resource *res;
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int out = 0;
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unsigned long total = 0;
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out += scnprintf(buf + out, len - out,
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"Dumping Purgelist for Domain: %s\n", dlm->name);
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spin_lock(&dlm->spinlock);
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list_for_each_entry(res, &dlm->purge_list, purge) {
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++total;
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if (len - out < 100)
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continue;
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spin_lock(&res->spinlock);
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out += stringify_lockname(res->lockname.name,
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res->lockname.len,
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buf + out, len - out);
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out += scnprintf(buf + out, len - out, "\t%ld\n",
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(jiffies - res->last_used)/HZ);
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spin_unlock(&res->spinlock);
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}
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spin_unlock(&dlm->spinlock);
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out += scnprintf(buf + out, len - out, "Total on list: %lu\n", total);
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return out;
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}
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static int debug_purgelist_open(struct inode *inode, struct file *file)
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{
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struct dlm_ctxt *dlm = inode->i_private;
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char *buf = NULL;
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buf = (char *) get_zeroed_page(GFP_NOFS);
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if (!buf)
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goto bail;
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i_size_write(inode, debug_purgelist_print(dlm, buf, PAGE_SIZE - 1));
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file->private_data = buf;
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return 0;
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bail:
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return -ENOMEM;
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}
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static const struct file_operations debug_purgelist_fops = {
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.open = debug_purgelist_open,
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.release = debug_release,
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.read = debug_read,
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.llseek = generic_file_llseek,
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};
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/* end - purge list funcs */
|
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/* begin - debug mle funcs */
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static int debug_mle_print(struct dlm_ctxt *dlm, char *buf, int len)
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{
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struct dlm_master_list_entry *mle;
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struct hlist_head *bucket;
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int i, out = 0;
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unsigned long total = 0, longest = 0, bucket_count = 0;
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out += scnprintf(buf + out, len - out,
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"Dumping MLEs for Domain: %s\n", dlm->name);
|
|
spin_lock(&dlm->master_lock);
|
for (i = 0; i < DLM_HASH_BUCKETS; i++) {
|
bucket = dlm_master_hash(dlm, i);
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hlist_for_each_entry(mle, bucket, master_hash_node) {
|
++total;
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++bucket_count;
|
if (len - out < 200)
|
continue;
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out += dump_mle(mle, buf + out, len - out);
|
}
|
longest = max(longest, bucket_count);
|
bucket_count = 0;
|
}
|
spin_unlock(&dlm->master_lock);
|
|
out += scnprintf(buf + out, len - out,
|
"Total: %lu, Longest: %lu\n", total, longest);
|
return out;
|
}
|
|
static int debug_mle_open(struct inode *inode, struct file *file)
|
{
|
struct dlm_ctxt *dlm = inode->i_private;
|
char *buf = NULL;
|
|
buf = (char *) get_zeroed_page(GFP_NOFS);
|
if (!buf)
|
goto bail;
|
|
i_size_write(inode, debug_mle_print(dlm, buf, PAGE_SIZE - 1));
|
|
file->private_data = buf;
|
|
return 0;
|
bail:
|
return -ENOMEM;
|
}
|
|
static const struct file_operations debug_mle_fops = {
|
.open = debug_mle_open,
|
.release = debug_release,
|
.read = debug_read,
|
.llseek = generic_file_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 = scnprintf(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,
|
kref_read(&lock->lock_refs));
|
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 += scnprintf(buf + out, len - out, "NAME:");
|
out += stringify_lockname(res->lockname.name, res->lockname.len,
|
buf + out, len - out);
|
out += scnprintf(buf + out, len - out, "\n");
|
|
#define DEBUG_LRES_VERSION 1
|
out += scnprintf(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),
|
kref_read(&res->refs));
|
|
/* refmap */
|
out += scnprintf(buf + out, len - out, "RMAP:");
|
out += stringify_nodemap(res->refmap, O2NM_MAX_NODES,
|
buf + out, len - out);
|
out += scnprintf(buf + out, len - out, "\n");
|
|
/* lvb */
|
out += scnprintf(buf + out, len - out, "LVBX:");
|
for (i = 0; i < DLM_LVB_LEN; i++)
|
out += scnprintf(buf + out, len - out,
|
"%02x", (unsigned char)res->lvb[i]);
|
out += scnprintf(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 += scnprintf(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 *oldres = dl->dl_res;
|
struct dlm_lock_resource *res = NULL;
|
struct list_head *track_list;
|
|
spin_lock(&dlm->track_lock);
|
if (oldres)
|
track_list = &oldres->tracking;
|
else {
|
track_list = &dlm->tracking_list;
|
if (list_empty(track_list)) {
|
dl = NULL;
|
spin_unlock(&dlm->track_lock);
|
goto bail;
|
}
|
}
|
|
list_for_each_entry(res, track_list, tracking) {
|
if (&res->tracking == &dlm->tracking_list)
|
res = NULL;
|
else
|
dlm_lockres_get(res);
|
break;
|
}
|
spin_unlock(&dlm->track_lock);
|
|
if (oldres)
|
dlm_lockres_put(oldres);
|
|
dl->dl_res = res;
|
|
if (res) {
|
spin_lock(&res->spinlock);
|
dump_lockres(res, dl->dl_buf, dl->dl_len - 1);
|
spin_unlock(&res->spinlock);
|
} else
|
dl = NULL;
|
|
bail:
|
/* passed to seq_show */
|
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 const 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;
|
struct debug_lockres *dl;
|
void *buf;
|
|
buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
|
if (!buf)
|
goto bail;
|
|
dl = __seq_open_private(file, &debug_lockres_ops, sizeof(*dl));
|
if (!dl)
|
goto bailfree;
|
|
dl->dl_len = PAGE_SIZE;
|
dl->dl_buf = buf;
|
|
dlm_grab(dlm);
|
dl->dl_ctxt = dlm;
|
|
return 0;
|
|
bailfree:
|
kfree(buf);
|
bail:
|
mlog_errno(-ENOMEM);
|
return -ENOMEM;
|
}
|
|
static int debug_lockres_release(struct inode *inode, struct file *file)
|
{
|
struct seq_file *seq = 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 const 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, char *buf, int len)
|
{
|
int out = 0;
|
struct dlm_reco_node_data *node;
|
char *state;
|
int cur_mles = 0, tot_mles = 0;
|
int i;
|
|
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 += scnprintf(buf + out, len - out,
|
"Domain: %s Key: 0x%08x Protocol: %d.%d\n",
|
dlm->name, dlm->key, dlm->dlm_locking_proto.pv_major,
|
dlm->dlm_locking_proto.pv_minor);
|
|
/* Thread Pid: xxx Node: xxx State: xxxxx */
|
out += scnprintf(buf + out, len - out,
|
"Thread Pid: %d Node: %d State: %s\n",
|
task_pid_nr(dlm->dlm_thread_task), dlm->node_num, state);
|
|
/* Number of Joins: xxx Joining Node: xxx */
|
out += scnprintf(buf + out, len - out,
|
"Number of Joins: %d Joining Node: %d\n",
|
dlm->num_joins, dlm->joining_node);
|
|
/* Domain Map: xx xx xx */
|
out += scnprintf(buf + out, len - out, "Domain Map: ");
|
out += stringify_nodemap(dlm->domain_map, O2NM_MAX_NODES,
|
buf + out, len - out);
|
out += scnprintf(buf + out, len - out, "\n");
|
|
/* Exit Domain Map: xx xx xx */
|
out += scnprintf(buf + out, len - out, "Exit Domain Map: ");
|
out += stringify_nodemap(dlm->exit_domain_map, O2NM_MAX_NODES,
|
buf + out, len - out);
|
out += scnprintf(buf + out, len - out, "\n");
|
|
/* Live Map: xx xx xx */
|
out += scnprintf(buf + out, len - out, "Live Map: ");
|
out += stringify_nodemap(dlm->live_nodes_map, O2NM_MAX_NODES,
|
buf + out, len - out);
|
out += scnprintf(buf + out, len - out, "\n");
|
|
/* Lock Resources: xxx (xxx) */
|
out += scnprintf(buf + out, len - out,
|
"Lock Resources: %d (%d)\n",
|
atomic_read(&dlm->res_cur_count),
|
atomic_read(&dlm->res_tot_count));
|
|
for (i = 0; i < DLM_MLE_NUM_TYPES; ++i)
|
tot_mles += atomic_read(&dlm->mle_tot_count[i]);
|
|
for (i = 0; i < DLM_MLE_NUM_TYPES; ++i)
|
cur_mles += atomic_read(&dlm->mle_cur_count[i]);
|
|
/* MLEs: xxx (xxx) */
|
out += scnprintf(buf + out, len - out,
|
"MLEs: %d (%d)\n", cur_mles, tot_mles);
|
|
/* Blocking: xxx (xxx) */
|
out += scnprintf(buf + out, len - out,
|
" Blocking: %d (%d)\n",
|
atomic_read(&dlm->mle_cur_count[DLM_MLE_BLOCK]),
|
atomic_read(&dlm->mle_tot_count[DLM_MLE_BLOCK]));
|
|
/* Mastery: xxx (xxx) */
|
out += scnprintf(buf + out, len - out,
|
" Mastery: %d (%d)\n",
|
atomic_read(&dlm->mle_cur_count[DLM_MLE_MASTER]),
|
atomic_read(&dlm->mle_tot_count[DLM_MLE_MASTER]));
|
|
/* Migration: xxx (xxx) */
|
out += scnprintf(buf + out, len - out,
|
" Migration: %d (%d)\n",
|
atomic_read(&dlm->mle_cur_count[DLM_MLE_MIGRATION]),
|
atomic_read(&dlm->mle_tot_count[DLM_MLE_MIGRATION]));
|
|
/* Lists: Dirty=Empty Purge=InUse PendingASTs=Empty ... */
|
out += scnprintf(buf + out, len - out,
|
"Lists: Dirty=%s Purge=%s PendingASTs=%s "
|
"PendingBASTs=%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"));
|
|
/* Purge Count: xxx Refs: xxx */
|
out += scnprintf(buf + out, len - out,
|
"Purge Count: %d Refs: %d\n", dlm->purge_count,
|
kref_read(&dlm->dlm_refs));
|
|
/* Dead Node: xxx */
|
out += scnprintf(buf + out, 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 += scnprintf(buf + out, len - out,
|
"Recovery Pid: %d Master: %d State: %s\n",
|
task_pid_nr(dlm->dlm_reco_thread_task),
|
dlm->reco.new_master, state);
|
|
/* Recovery Map: xx xx */
|
out += scnprintf(buf + out, len - out, "Recovery Map: ");
|
out += stringify_nodemap(dlm->recovery_map, O2NM_MAX_NODES,
|
buf + out, len - out);
|
out += scnprintf(buf + out, len - out, "\n");
|
|
/* Recovery Node State: */
|
out += scnprintf(buf + out, 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 += scnprintf(buf + out, 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;
|
char *buf = NULL;
|
|
buf = (char *) get_zeroed_page(GFP_NOFS);
|
if (!buf)
|
goto bail;
|
|
i_size_write(inode, debug_state_print(dlm, buf, PAGE_SIZE - 1));
|
|
file->private_data = buf;
|
|
return 0;
|
bail:
|
return -ENOMEM;
|
}
|
|
static const struct file_operations debug_state_fops = {
|
.open = debug_state_open,
|
.release = debug_release,
|
.read = debug_read,
|
.llseek = generic_file_llseek,
|
};
|
/* end - debug state funcs */
|
|
/* files in subroot */
|
void dlm_debug_init(struct dlm_ctxt *dlm)
|
{
|
/* for dumping dlm_ctxt */
|
debugfs_create_file(DLM_DEBUGFS_DLM_STATE, S_IFREG|S_IRUSR,
|
dlm->dlm_debugfs_subroot, dlm, &debug_state_fops);
|
|
/* for dumping lockres */
|
debugfs_create_file(DLM_DEBUGFS_LOCKING_STATE, S_IFREG|S_IRUSR,
|
dlm->dlm_debugfs_subroot, dlm, &debug_lockres_fops);
|
|
/* for dumping mles */
|
debugfs_create_file(DLM_DEBUGFS_MLE_STATE, S_IFREG|S_IRUSR,
|
dlm->dlm_debugfs_subroot, dlm, &debug_mle_fops);
|
|
/* for dumping lockres on the purge list */
|
debugfs_create_file(DLM_DEBUGFS_PURGE_LIST, S_IFREG|S_IRUSR,
|
dlm->dlm_debugfs_subroot, dlm,
|
&debug_purgelist_fops);
|
}
|
|
/* subroot - domain dir */
|
void dlm_create_debugfs_subroot(struct dlm_ctxt *dlm)
|
{
|
dlm->dlm_debugfs_subroot = debugfs_create_dir(dlm->name,
|
dlm_debugfs_root);
|
}
|
|
void dlm_destroy_debugfs_subroot(struct dlm_ctxt *dlm)
|
{
|
debugfs_remove_recursive(dlm->dlm_debugfs_subroot);
|
}
|
|
/* debugfs root */
|
void dlm_create_debugfs_root(void)
|
{
|
dlm_debugfs_root = debugfs_create_dir(DLM_DEBUGFS_DIR, NULL);
|
}
|
|
void dlm_destroy_debugfs_root(void)
|
{
|
debugfs_remove(dlm_debugfs_root);
|
}
|
#endif /* CONFIG_DEBUG_FS */
|
