mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-17 01:51:00 +03:00
893a6d62c1
On large systems, the memory used by loaded metaslabs can become a concern. While range trees are a fairly efficient data structure, on heavily fragmented pools they can still consume a significant amount of memory. This problem is amplified when we fail to unload metaslabs that we aren't using. Currently, we only unload a metaslab during metaslab_sync_done; in order for that function to be called on a given metaslab in a given txg, we have to have dirtied that metaslab in that txg. If the dirtying was the result of an allocation, we wouldn't be unloading it (since it wouldn't be 8 txgs since it was selected), so in effect we only unload a metaslab during txgs where it's being freed from. We move the unload logic from sync_done to a new function, and call that function on all metaslabs in a given vdev during vdev_sync_done(). Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Paul Dagnelie <pcd@delphix.com> Closes #8837
132 lines
4.7 KiB
C
132 lines
4.7 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) 2011, 2018 by Delphix. All rights reserved.
|
|
* Copyright (c) 2017, Intel Corporation.
|
|
*/
|
|
|
|
#ifndef _SYS_METASLAB_H
|
|
#define _SYS_METASLAB_H
|
|
|
|
#include <sys/spa.h>
|
|
#include <sys/space_map.h>
|
|
#include <sys/txg.h>
|
|
#include <sys/zio.h>
|
|
#include <sys/avl.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
typedef struct metaslab_ops {
|
|
uint64_t (*msop_alloc)(metaslab_t *, uint64_t);
|
|
} metaslab_ops_t;
|
|
|
|
|
|
extern metaslab_ops_t *zfs_metaslab_ops;
|
|
|
|
int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t,
|
|
metaslab_t **);
|
|
void metaslab_fini(metaslab_t *);
|
|
|
|
int metaslab_load(metaslab_t *);
|
|
void metaslab_potentially_unload(metaslab_t *, uint64_t);
|
|
void metaslab_unload(metaslab_t *);
|
|
|
|
uint64_t metaslab_allocated_space(metaslab_t *);
|
|
|
|
void metaslab_sync(metaslab_t *, uint64_t);
|
|
void metaslab_sync_done(metaslab_t *, uint64_t);
|
|
void metaslab_sync_reassess(metaslab_group_t *);
|
|
uint64_t metaslab_block_maxsize(metaslab_t *);
|
|
|
|
/*
|
|
* metaslab alloc flags
|
|
*/
|
|
#define METASLAB_HINTBP_FAVOR 0x0
|
|
#define METASLAB_HINTBP_AVOID 0x1
|
|
#define METASLAB_GANG_HEADER 0x2
|
|
#define METASLAB_GANG_CHILD 0x4
|
|
#define METASLAB_ASYNC_ALLOC 0x8
|
|
#define METASLAB_DONT_THROTTLE 0x10
|
|
#define METASLAB_MUST_RESERVE 0x20
|
|
#define METASLAB_FASTWRITE 0x40
|
|
|
|
int metaslab_alloc(spa_t *, metaslab_class_t *, uint64_t,
|
|
blkptr_t *, int, uint64_t, blkptr_t *, int, zio_alloc_list_t *, zio_t *,
|
|
int);
|
|
int metaslab_alloc_dva(spa_t *, metaslab_class_t *, uint64_t,
|
|
dva_t *, int, dva_t *, uint64_t, int, zio_alloc_list_t *, int);
|
|
void metaslab_free(spa_t *, const blkptr_t *, uint64_t, boolean_t);
|
|
void metaslab_free_concrete(vdev_t *, uint64_t, uint64_t, boolean_t);
|
|
void metaslab_free_dva(spa_t *, const dva_t *, boolean_t);
|
|
void metaslab_free_impl_cb(uint64_t, vdev_t *, uint64_t, uint64_t, void *);
|
|
void metaslab_unalloc_dva(spa_t *, const dva_t *, uint64_t);
|
|
int metaslab_claim(spa_t *, const blkptr_t *, uint64_t);
|
|
int metaslab_claim_impl(vdev_t *, uint64_t, uint64_t, uint64_t);
|
|
void metaslab_check_free(spa_t *, const blkptr_t *);
|
|
void metaslab_fastwrite_mark(spa_t *, const blkptr_t *);
|
|
void metaslab_fastwrite_unmark(spa_t *, const blkptr_t *);
|
|
|
|
void metaslab_alloc_trace_init(void);
|
|
void metaslab_alloc_trace_fini(void);
|
|
void metaslab_trace_init(zio_alloc_list_t *);
|
|
void metaslab_trace_fini(zio_alloc_list_t *);
|
|
|
|
metaslab_class_t *metaslab_class_create(spa_t *, metaslab_ops_t *);
|
|
void metaslab_class_destroy(metaslab_class_t *);
|
|
int metaslab_class_validate(metaslab_class_t *);
|
|
void metaslab_class_histogram_verify(metaslab_class_t *);
|
|
uint64_t metaslab_class_fragmentation(metaslab_class_t *);
|
|
uint64_t metaslab_class_expandable_space(metaslab_class_t *);
|
|
boolean_t metaslab_class_throttle_reserve(metaslab_class_t *, int, int,
|
|
zio_t *, int);
|
|
void metaslab_class_throttle_unreserve(metaslab_class_t *, int, int, zio_t *);
|
|
|
|
uint64_t metaslab_class_get_alloc(metaslab_class_t *);
|
|
uint64_t metaslab_class_get_space(metaslab_class_t *);
|
|
uint64_t metaslab_class_get_dspace(metaslab_class_t *);
|
|
uint64_t metaslab_class_get_deferred(metaslab_class_t *);
|
|
|
|
metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *, int);
|
|
void metaslab_group_destroy(metaslab_group_t *);
|
|
void metaslab_group_activate(metaslab_group_t *);
|
|
void metaslab_group_passivate(metaslab_group_t *);
|
|
boolean_t metaslab_group_initialized(metaslab_group_t *);
|
|
uint64_t metaslab_group_get_space(metaslab_group_t *);
|
|
void metaslab_group_histogram_verify(metaslab_group_t *);
|
|
uint64_t metaslab_group_fragmentation(metaslab_group_t *);
|
|
void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *);
|
|
void metaslab_group_alloc_decrement(spa_t *, uint64_t, void *, int, int,
|
|
boolean_t);
|
|
void metaslab_group_alloc_verify(spa_t *, const blkptr_t *, void *, int);
|
|
void metaslab_recalculate_weight_and_sort(metaslab_t *);
|
|
void metaslab_disable(metaslab_t *);
|
|
void metaslab_enable(metaslab_t *, boolean_t);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_METASLAB_H */
|