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.
25 #ifndef _SYS_DSL_SCAN_H
26 #define _SYS_DSL_SCAN_H
28 #include <sys/zfs_context.h>
31 #include <sys/bplist.h>
44 * All members of this structure must be uint64_t, for byteswap
47 typedef struct dsl_scan_phys {
48 uint64_t scn_func; /* pool_scan_func_t */
49 uint64_t scn_state; /* dsl_scan_state_t */
50 uint64_t scn_queue_obj;
53 uint64_t scn_cur_min_txg;
54 uint64_t scn_cur_max_txg;
55 uint64_t scn_start_time;
56 uint64_t scn_end_time;
57 uint64_t scn_to_examine; /* total bytes to be scanned */
58 uint64_t scn_examined; /* bytes scanned so far */
59 uint64_t scn_to_process;
60 uint64_t scn_processed;
61 uint64_t scn_errors; /* scan I/O error count */
62 uint64_t scn_ddt_class_max;
63 ddt_bookmark_t scn_ddt_bookmark;
64 zbookmark_t scn_bookmark;
65 uint64_t scn_flags; /* dsl_scan_flags_t */
68 #define SCAN_PHYS_NUMINTS (sizeof (dsl_scan_phys_t) / sizeof (uint64_t))
70 typedef enum dsl_scan_flags {
71 DSF_VISIT_DS_AGAIN = 1<<0,
74 typedef struct dsl_scan {
75 struct dsl_pool *scn_dp;
77 boolean_t scn_pausing;
78 uint64_t scn_restart_txg;
79 uint64_t scn_sync_start_time;
82 /* for debugging / information */
83 uint64_t scn_visited_this_txg;
85 dsl_scan_phys_t scn_phys;
88 int dsl_scan_init(struct dsl_pool *dp, uint64_t txg);
89 void dsl_scan_fini(struct dsl_pool *dp);
90 void dsl_scan_sync(struct dsl_pool *, dmu_tx_t *);
91 int dsl_scan_cancel(struct dsl_pool *);
92 int dsl_scan(struct dsl_pool *, pool_scan_func_t);
93 void dsl_resilver_restart(struct dsl_pool *, uint64_t txg);
94 boolean_t dsl_scan_resilvering(struct dsl_pool *dp);
95 boolean_t dsl_dataset_unstable(struct dsl_dataset *ds);
96 void dsl_scan_ddt_entry(dsl_scan_t *scn, enum zio_checksum checksum,
97 ddt_entry_t *dde, dmu_tx_t *tx);
98 void dsl_scan_ds_destroyed(struct dsl_dataset *ds, struct dmu_tx *tx);
99 void dsl_scan_ds_snapshotted(struct dsl_dataset *ds, struct dmu_tx *tx);
100 void dsl_scan_ds_clone_swapped(struct dsl_dataset *ds1, struct dsl_dataset *ds2,
102 boolean_t dsl_scan_active(dsl_scan_t *scn);
108 #endif /* _SYS_DSL_SCAN_H */