mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-25 18:59:33 +03:00
3b36f8319d
Internally ZFS keeps a small log to facilitate debugging. By default the log is disabled, to enable it set zfs_dbgmsg_enable=1. The contents of the log can be accessed by reading the /proc/spl/kstat/zfs/dbgmsg file. Writing 0 to this proc file clears the log. $ echo 1 >/sys/module/zfs/parameters/zfs_dbgmsg_enable $ echo 0 >/proc/spl/kstat/zfs/dbgmsg $ zpool import tank $ cat /proc/spl/kstat/zfs/dbgmsg 1 0 0x01 -1 0 2492357525542 2525836565501 timestamp message 1441141408 spa=tank async request task=1 1441141408 txg 70 open pool version 5000; software version 5000/5; ... 1441141409 spa=tank async request task=32 1441141409 txg 72 import pool version 5000; software version 5000/5; ... 1441141414 command: lt-zpool import tank Note the zfs_dbgmsg() and dprintf() functions are both now mapped to the same log. As mentioned above the kernel debug log can be accessed though the /proc/spl/kstat/zfs/dbgmsg kstat. For user space consumers log messages are immediately written to stdout after applying the ZFS_DEBUG environment variable. $ ZFS_DEBUG=on ./cmd/ztest/ztest -V Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ned Bass <bass6@llnl.gov> Closes #3728
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
/*
|
|
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _SYS_ZFS_DEBUG_H
|
|
#define _SYS_ZFS_DEBUG_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifndef TRUE
|
|
#define TRUE 1
|
|
#endif
|
|
|
|
#ifndef FALSE
|
|
#define FALSE 0
|
|
#endif
|
|
|
|
extern int zfs_flags;
|
|
extern int zfs_recover;
|
|
extern int zfs_free_leak_on_eio;
|
|
|
|
#define ZFS_DEBUG_DPRINTF (1<<0)
|
|
#define ZFS_DEBUG_DBUF_VERIFY (1<<1)
|
|
#define ZFS_DEBUG_DNODE_VERIFY (1<<2)
|
|
#define ZFS_DEBUG_SNAPNAMES (1<<3)
|
|
#define ZFS_DEBUG_MODIFY (1<<4)
|
|
#define ZFS_DEBUG_SPA (1<<5)
|
|
#define ZFS_DEBUG_ZIO_FREE (1<<6)
|
|
#define ZFS_DEBUG_HISTOGRAM_VERIFY (1<<7)
|
|
|
|
extern void __dprintf(const char *file, const char *func,
|
|
int line, const char *fmt, ...);
|
|
#define dprintf(...) \
|
|
__dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
|
|
#define zfs_dbgmsg(...) \
|
|
__dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
|
|
|
|
extern void zfs_panic_recover(const char *fmt, ...);
|
|
|
|
typedef struct zfs_dbgmsg {
|
|
list_node_t zdm_node;
|
|
time_t zdm_timestamp;
|
|
int zdm_size;
|
|
char zdm_msg[1]; /* variable length allocation */
|
|
} zfs_dbgmsg_t;
|
|
|
|
extern void zfs_dbgmsg_init(void);
|
|
extern void zfs_dbgmsg_fini(void);
|
|
|
|
#ifndef _KERNEL
|
|
extern int dprintf_find_string(const char *string);
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_ZFS_DEBUG_H */
|