bc77ba73fe
Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Boris Protopopov <bprotopopov@hotmail.com> Approved by: Richard Lowe <richlowe@richlowe.net>a Ported by: Boris Protopopov <bprotopopov@actifio.com> Signed-off-by: Boris Protopopov <bprotopopov@actifio.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> OpenZFS-issue: https://www.illumos.org/issues/6513 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/8df0bcf0 If a ZFS object contains a hole at level one, and then a data block is created at level 0 underneath that l1 block, l0 holes will be created. However, these l0 holes do not have the birth time property set; as a result, incremental sends will not send those holes. Fix is to modify the dbuf_read code to fill in birth time data.
237 lines
7.2 KiB
C
237 lines
7.2 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, 2016 by Delphix. All rights reserved.
|
|
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _SYS_ARC_H
|
|
#define _SYS_ARC_H
|
|
|
|
#include <sys/zfs_context.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <sys/zio.h>
|
|
#include <sys/dmu.h>
|
|
#include <sys/spa.h>
|
|
#include <sys/refcount.h>
|
|
|
|
/*
|
|
* Used by arc_flush() to inform arc_evict_state() that it should evict
|
|
* all available buffers from the arc state being passed in.
|
|
*/
|
|
#define ARC_EVICT_ALL -1ULL
|
|
|
|
typedef struct arc_buf_hdr arc_buf_hdr_t;
|
|
typedef struct arc_buf arc_buf_t;
|
|
typedef struct arc_prune arc_prune_t;
|
|
typedef void arc_done_func_t(zio_t *zio, arc_buf_t *buf, void *private);
|
|
typedef void arc_prune_func_t(int64_t bytes, void *private);
|
|
typedef int arc_evict_func_t(void *private);
|
|
|
|
/* Shared module parameters */
|
|
extern int zfs_arc_average_blocksize;
|
|
|
|
/* generic arc_done_func_t's which you can use */
|
|
arc_done_func_t arc_bcopy_func;
|
|
arc_done_func_t arc_getbuf_func;
|
|
|
|
/* generic arc_prune_func_t wrapper for callbacks */
|
|
struct arc_prune {
|
|
arc_prune_func_t *p_pfunc;
|
|
void *p_private;
|
|
uint64_t p_adjust;
|
|
list_node_t p_node;
|
|
refcount_t p_refcnt;
|
|
};
|
|
|
|
typedef enum arc_strategy {
|
|
ARC_STRATEGY_META_ONLY = 0, /* Evict only meta data buffers */
|
|
ARC_STRATEGY_META_BALANCED = 1, /* Evict data buffers if needed */
|
|
} arc_strategy_t;
|
|
|
|
typedef enum arc_flags
|
|
{
|
|
/*
|
|
* Public flags that can be passed into the ARC by external consumers.
|
|
*/
|
|
ARC_FLAG_NONE = 1 << 0, /* No flags set */
|
|
ARC_FLAG_WAIT = 1 << 1, /* perform sync I/O */
|
|
ARC_FLAG_NOWAIT = 1 << 2, /* perform async I/O */
|
|
ARC_FLAG_PREFETCH = 1 << 3, /* I/O is a prefetch */
|
|
ARC_FLAG_CACHED = 1 << 4, /* I/O was in cache */
|
|
ARC_FLAG_L2CACHE = 1 << 5, /* cache in L2ARC */
|
|
ARC_FLAG_L2COMPRESS = 1 << 6, /* compress in L2ARC */
|
|
ARC_FLAG_PREDICTIVE_PREFETCH = 1 << 7, /* I/O from zfetch */
|
|
|
|
/*
|
|
* Private ARC flags. These flags are private ARC only flags that
|
|
* will show up in b_flags in the arc_hdr_buf_t. These flags should
|
|
* only be set by ARC code.
|
|
*/
|
|
ARC_FLAG_IN_HASH_TABLE = 1 << 8, /* buffer is hashed */
|
|
ARC_FLAG_IO_IN_PROGRESS = 1 << 9, /* I/O in progress */
|
|
ARC_FLAG_IO_ERROR = 1 << 10, /* I/O failed for buf */
|
|
ARC_FLAG_FREED_IN_READ = 1 << 11, /* freed during read */
|
|
ARC_FLAG_BUF_AVAILABLE = 1 << 12, /* block not in use */
|
|
ARC_FLAG_INDIRECT = 1 << 13, /* indirect block */
|
|
/* Indicates that block was read with ASYNC priority. */
|
|
ARC_FLAG_PRIO_ASYNC_READ = 1 << 14,
|
|
ARC_FLAG_L2_WRITING = 1 << 15, /* write in progress */
|
|
ARC_FLAG_L2_EVICTED = 1 << 16, /* evicted during I/O */
|
|
ARC_FLAG_L2_WRITE_HEAD = 1 << 17, /* head of write list */
|
|
/* indicates that the buffer contains metadata (otherwise, data) */
|
|
ARC_FLAG_BUFC_METADATA = 1 << 18,
|
|
|
|
/* Flags specifying whether optional hdr struct fields are defined */
|
|
ARC_FLAG_HAS_L1HDR = 1 << 19,
|
|
ARC_FLAG_HAS_L2HDR = 1 << 20,
|
|
|
|
} arc_flags_t;
|
|
|
|
struct arc_buf {
|
|
arc_buf_hdr_t *b_hdr;
|
|
arc_buf_t *b_next;
|
|
kmutex_t b_evict_lock;
|
|
void *b_data;
|
|
arc_evict_func_t *b_efunc;
|
|
void *b_private;
|
|
};
|
|
|
|
typedef enum arc_buf_contents {
|
|
ARC_BUFC_DATA, /* buffer contains data */
|
|
ARC_BUFC_METADATA, /* buffer contains metadata */
|
|
ARC_BUFC_NUMTYPES
|
|
} arc_buf_contents_t;
|
|
|
|
/*
|
|
* The following breakdows of arc_size exist for kstat only.
|
|
*/
|
|
typedef enum arc_space_type {
|
|
ARC_SPACE_DATA,
|
|
ARC_SPACE_META,
|
|
ARC_SPACE_HDRS,
|
|
ARC_SPACE_L2HDRS,
|
|
ARC_SPACE_OTHER,
|
|
ARC_SPACE_NUMTYPES
|
|
} arc_space_type_t;
|
|
|
|
typedef enum arc_state_type {
|
|
ARC_STATE_ANON,
|
|
ARC_STATE_MRU,
|
|
ARC_STATE_MRU_GHOST,
|
|
ARC_STATE_MFU,
|
|
ARC_STATE_MFU_GHOST,
|
|
ARC_STATE_L2C_ONLY,
|
|
ARC_STATE_NUMTYPES
|
|
} arc_state_type_t;
|
|
|
|
typedef struct arc_buf_info {
|
|
arc_state_type_t abi_state_type;
|
|
arc_buf_contents_t abi_state_contents;
|
|
uint32_t abi_flags;
|
|
uint32_t abi_datacnt;
|
|
uint64_t abi_size;
|
|
uint64_t abi_spa;
|
|
uint64_t abi_access;
|
|
uint32_t abi_mru_hits;
|
|
uint32_t abi_mru_ghost_hits;
|
|
uint32_t abi_mfu_hits;
|
|
uint32_t abi_mfu_ghost_hits;
|
|
uint32_t abi_l2arc_hits;
|
|
uint32_t abi_holds;
|
|
uint64_t abi_l2arc_dattr;
|
|
uint64_t abi_l2arc_asize;
|
|
enum zio_compress abi_l2arc_compress;
|
|
} arc_buf_info_t;
|
|
|
|
void arc_space_consume(uint64_t space, arc_space_type_t type);
|
|
void arc_space_return(uint64_t space, arc_space_type_t type);
|
|
arc_buf_t *arc_buf_alloc(spa_t *spa, uint64_t size, void *tag,
|
|
arc_buf_contents_t type);
|
|
arc_buf_t *arc_loan_buf(spa_t *spa, uint64_t size);
|
|
void arc_return_buf(arc_buf_t *buf, void *tag);
|
|
void arc_loan_inuse_buf(arc_buf_t *buf, void *tag);
|
|
void arc_buf_add_ref(arc_buf_t *buf, void *tag);
|
|
boolean_t arc_buf_remove_ref(arc_buf_t *buf, void *tag);
|
|
void arc_buf_info(arc_buf_t *buf, arc_buf_info_t *abi, int state_index);
|
|
uint64_t arc_buf_size(arc_buf_t *buf);
|
|
void arc_release(arc_buf_t *buf, void *tag);
|
|
int arc_released(arc_buf_t *buf);
|
|
void arc_buf_sigsegv(int sig, siginfo_t *si, void *unused);
|
|
void arc_buf_freeze(arc_buf_t *buf);
|
|
void arc_buf_thaw(arc_buf_t *buf);
|
|
boolean_t arc_buf_eviction_needed(arc_buf_t *buf);
|
|
#ifdef ZFS_DEBUG
|
|
int arc_referenced(arc_buf_t *buf);
|
|
#endif
|
|
|
|
int arc_read(zio_t *pio, spa_t *spa, const blkptr_t *bp,
|
|
arc_done_func_t *done, void *private, zio_priority_t priority, int flags,
|
|
arc_flags_t *arc_flags, const zbookmark_phys_t *zb);
|
|
zio_t *arc_write(zio_t *pio, spa_t *spa, uint64_t txg,
|
|
blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, boolean_t l2arc_compress,
|
|
const zio_prop_t *zp,
|
|
arc_done_func_t *ready, arc_done_func_t *child_ready,
|
|
arc_done_func_t *physdone, arc_done_func_t *done,
|
|
void *private, zio_priority_t priority, int zio_flags,
|
|
const zbookmark_phys_t *zb);
|
|
|
|
arc_prune_t *arc_add_prune_callback(arc_prune_func_t *func, void *private);
|
|
void arc_remove_prune_callback(arc_prune_t *p);
|
|
void arc_freed(spa_t *spa, const blkptr_t *bp);
|
|
|
|
void arc_set_callback(arc_buf_t *buf, arc_evict_func_t *func, void *private);
|
|
boolean_t arc_clear_callback(arc_buf_t *buf);
|
|
|
|
void arc_flush(spa_t *spa, boolean_t retry);
|
|
void arc_tempreserve_clear(uint64_t reserve);
|
|
int arc_tempreserve_space(uint64_t reserve, uint64_t txg);
|
|
|
|
void arc_init(void);
|
|
void arc_fini(void);
|
|
|
|
/*
|
|
* Level 2 ARC
|
|
*/
|
|
|
|
void l2arc_add_vdev(spa_t *spa, vdev_t *vd);
|
|
void l2arc_remove_vdev(vdev_t *vd);
|
|
boolean_t l2arc_vdev_present(vdev_t *vd);
|
|
void l2arc_init(void);
|
|
void l2arc_fini(void);
|
|
void l2arc_start(void);
|
|
void l2arc_stop(void);
|
|
|
|
#ifndef _KERNEL
|
|
extern boolean_t arc_watch;
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_ARC_H */
|