4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
22 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2013 by Delphix. All rights reserved.
26 #ifndef _SYS_DSL_SCAN_H
27 #define _SYS_DSL_SCAN_H
29 #include <sys/zfs_context.h>
32 #include <sys/bplist.h>
45 * All members of this structure must be uint64_t, for byteswap
48 typedef struct dsl_scan_phys
{
49 uint64_t scn_func
; /* pool_scan_func_t */
50 uint64_t scn_state
; /* dsl_scan_state_t */
51 uint64_t scn_queue_obj
;
54 uint64_t scn_cur_min_txg
;
55 uint64_t scn_cur_max_txg
;
56 uint64_t scn_start_time
;
57 uint64_t scn_end_time
;
58 uint64_t scn_to_examine
; /* total bytes to be scanned */
59 uint64_t scn_examined
; /* bytes scanned so far */
60 uint64_t scn_to_process
;
61 uint64_t scn_processed
;
62 uint64_t scn_errors
; /* scan I/O error count */
63 uint64_t scn_ddt_class_max
;
64 ddt_bookmark_t scn_ddt_bookmark
;
65 zbookmark_t scn_bookmark
;
66 uint64_t scn_flags
; /* dsl_scan_flags_t */
69 #define SCAN_PHYS_NUMINTS (sizeof (dsl_scan_phys_t) / sizeof (uint64_t))
71 typedef enum dsl_scan_flags
{
72 DSF_VISIT_DS_AGAIN
= 1<<0,
75 typedef struct dsl_scan
{
76 struct dsl_pool
*scn_dp
;
78 boolean_t scn_pausing
;
79 uint64_t scn_restart_txg
;
80 uint64_t scn_sync_start_time
;
83 /* for freeing blocks */
84 boolean_t scn_is_bptree
;
85 boolean_t scn_async_destroying
;
87 /* for debugging / information */
88 uint64_t scn_visited_this_txg
;
90 dsl_scan_phys_t scn_phys
;
93 int dsl_scan_init(struct dsl_pool
*dp
, uint64_t txg
);
94 void dsl_scan_fini(struct dsl_pool
*dp
);
95 void dsl_scan_sync(struct dsl_pool
*, dmu_tx_t
*);
96 int dsl_scan_cancel(struct dsl_pool
*);
97 int dsl_scan(struct dsl_pool
*, pool_scan_func_t
);
98 void dsl_resilver_restart(struct dsl_pool
*, uint64_t txg
);
99 boolean_t
dsl_scan_resilvering(struct dsl_pool
*dp
);
100 boolean_t
dsl_dataset_unstable(struct dsl_dataset
*ds
);
101 void dsl_scan_ddt_entry(dsl_scan_t
*scn
, enum zio_checksum checksum
,
102 ddt_entry_t
*dde
, dmu_tx_t
*tx
);
103 void dsl_scan_ds_destroyed(struct dsl_dataset
*ds
, struct dmu_tx
*tx
);
104 void dsl_scan_ds_snapshotted(struct dsl_dataset
*ds
, struct dmu_tx
*tx
);
105 void dsl_scan_ds_clone_swapped(struct dsl_dataset
*ds1
, struct dsl_dataset
*ds2
,
107 boolean_t
dsl_scan_active(dsl_scan_t
*scn
);
113 #endif /* _SYS_DSL_SCAN_H */