1 /* 2 * CDDL HEADER START 3 * 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. 7 * 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. 12 * 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] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright (c) 2012 by Delphix. All rights reserved. 24 */ 25 26 #ifndef _SYS_DSL_SCAN_H 27 #define _SYS_DSL_SCAN_H 28 29 #include <sys/zfs_context.h> 30 #include <sys/zio.h> 31 #include <sys/ddt.h> 32 #include <sys/bplist.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 struct objset; 39 struct dsl_dir; 40 struct dsl_dataset; 41 struct dsl_pool; 42 struct dmu_tx; 43 44 /* 45 * All members of this structure must be uint64_t, for byteswap 46 * purposes. 47 */ 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; 52 uint64_t scn_min_txg; 53 uint64_t scn_max_txg; 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 */ 67 } dsl_scan_phys_t; 68 69 #define SCAN_PHYS_NUMINTS (sizeof (dsl_scan_phys_t) / sizeof (uint64_t)) 70 71 typedef enum dsl_scan_flags { 72 DSF_VISIT_DS_AGAIN = 1<<0, 73 } dsl_scan_flags_t; 74 75 typedef struct dsl_scan { 76 struct dsl_pool *scn_dp; 77 78 boolean_t scn_pausing; 79 uint64_t scn_restart_txg; 80 uint64_t scn_sync_start_time; 81 zio_t *scn_zio_root; 82 83 /* for freeing blocks */ 84 boolean_t scn_is_bptree; 85 86 /* for debugging / information */ 87 uint64_t scn_visited_this_txg; 88 89 dsl_scan_phys_t scn_phys; 90 } dsl_scan_t; 91 92 int dsl_scan_init(struct dsl_pool *dp, uint64_t txg); 93 void dsl_scan_fini(struct dsl_pool *dp); 94 void dsl_scan_sync(struct dsl_pool *, dmu_tx_t *); 95 int dsl_scan_cancel(struct dsl_pool *); 96 int dsl_scan(struct dsl_pool *, pool_scan_func_t); 97 void dsl_resilver_restart(struct dsl_pool *, uint64_t txg); 98 boolean_t dsl_scan_resilvering(struct dsl_pool *dp); 99 boolean_t dsl_dataset_unstable(struct dsl_dataset *ds); 100 void dsl_scan_ddt_entry(dsl_scan_t *scn, enum zio_checksum checksum, 101 ddt_entry_t *dde, dmu_tx_t *tx); 102 void dsl_scan_ds_destroyed(struct dsl_dataset *ds, struct dmu_tx *tx); 103 void dsl_scan_ds_snapshotted(struct dsl_dataset *ds, struct dmu_tx *tx); 104 void dsl_scan_ds_clone_swapped(struct dsl_dataset *ds1, struct dsl_dataset *ds2, 105 struct dmu_tx *tx); 106 boolean_t dsl_scan_active(dsl_scan_t *scn); 107 108 #ifdef __cplusplus 109 } 110 #endif 111 112 #endif /* _SYS_DSL_SCAN_H */ 113