mirror_zfs/include/sys/vdev_trim.h
Kevin Jin 65d10bd87c
Fix short-lived txg caused by autotrim
Current autotrim causes short-lived txg through:

1. calling txg_wait_synced() in metaslab_enable()
2. calling txg_wait_open() with should_quiesce = true

This patch addresses all the issues mentioned above.

A new cv, vdev_autotrim_kick_cv is added to kick autotrim activity.
It will be signaled once a txg is synced so that it does not change 
the original autotrim pace. Also because it is a cv, the wait is 
interruptible which speeds up the vdev_autotrim_stop_wait() call.

Finally, combining big zfs_txg_timeout, txg_wait_open() also causes
delay when exporting a pool.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: jxdking <lostking2008@hotmail.com>
Issue #8993
Closes #12194
2023-03-28 08:43:41 -07:00

56 lines
1.8 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
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* See the License for the specific language governing permissions
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*
* 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]
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*/
/*
* Copyright (c) 2019 Lawrence Livermore National Security, LLC.
*/
#ifndef _SYS_VDEV_TRIM_H
#define _SYS_VDEV_TRIM_H
#include <sys/spa.h>
#ifdef __cplusplus
extern "C" {
#endif
extern unsigned int zfs_trim_metaslab_skip;
extern void vdev_trim(vdev_t *vd, uint64_t rate, boolean_t partial,
boolean_t secure);
extern void vdev_trim_stop(vdev_t *vd, vdev_trim_state_t tgt, list_t *vd_list);
extern void vdev_trim_stop_all(vdev_t *vd, vdev_trim_state_t tgt_state);
extern void vdev_trim_stop_wait(spa_t *spa, list_t *vd_list);
extern void vdev_trim_restart(vdev_t *vd);
extern void vdev_autotrim(spa_t *spa);
extern void vdev_autotrim_kick(spa_t *spa);
extern void vdev_autotrim_stop_all(spa_t *spa);
extern void vdev_autotrim_stop_wait(vdev_t *vd);
extern void vdev_autotrim_restart(spa_t *spa);
extern int vdev_trim_simple(vdev_t *vd, uint64_t start, uint64_t size);
extern void vdev_trim_l2arc(spa_t *spa);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_VDEV_TRIM_H */