1*3f9d6ad7SLin Ling /* 2*3f9d6ad7SLin Ling * CDDL HEADER START 3*3f9d6ad7SLin Ling * 4*3f9d6ad7SLin Ling * The contents of this file are subject to the terms of the 5*3f9d6ad7SLin Ling * Common Development and Distribution License (the "License"). 6*3f9d6ad7SLin Ling * You may not use this file except in compliance with the License. 7*3f9d6ad7SLin Ling * 8*3f9d6ad7SLin Ling * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*3f9d6ad7SLin Ling * or http://www.opensolaris.org/os/licensing. 10*3f9d6ad7SLin Ling * See the License for the specific language governing permissions 11*3f9d6ad7SLin Ling * and limitations under the License. 12*3f9d6ad7SLin Ling * 13*3f9d6ad7SLin Ling * When distributing Covered Code, include this CDDL HEADER in each 14*3f9d6ad7SLin Ling * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*3f9d6ad7SLin Ling * If applicable, add the following below this CDDL HEADER, with the 16*3f9d6ad7SLin Ling * fields enclosed by brackets "[]" replaced with your own identifying 17*3f9d6ad7SLin Ling * information: Portions Copyright [yyyy] [name of copyright owner] 18*3f9d6ad7SLin Ling * 19*3f9d6ad7SLin Ling * CDDL HEADER END 20*3f9d6ad7SLin Ling */ 21*3f9d6ad7SLin Ling /* 22*3f9d6ad7SLin Ling * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 23*3f9d6ad7SLin Ling */ 24*3f9d6ad7SLin Ling 25*3f9d6ad7SLin Ling #ifndef _SYS_DSL_SCAN_H 26*3f9d6ad7SLin Ling #define _SYS_DSL_SCAN_H 27*3f9d6ad7SLin Ling 28*3f9d6ad7SLin Ling #include <sys/zfs_context.h> 29*3f9d6ad7SLin Ling #include <sys/zio.h> 30*3f9d6ad7SLin Ling #include <sys/ddt.h> 31*3f9d6ad7SLin Ling #include <sys/bplist.h> 32*3f9d6ad7SLin Ling 33*3f9d6ad7SLin Ling #ifdef __cplusplus 34*3f9d6ad7SLin Ling extern "C" { 35*3f9d6ad7SLin Ling #endif 36*3f9d6ad7SLin Ling 37*3f9d6ad7SLin Ling struct objset; 38*3f9d6ad7SLin Ling struct dsl_dir; 39*3f9d6ad7SLin Ling struct dsl_dataset; 40*3f9d6ad7SLin Ling struct dsl_pool; 41*3f9d6ad7SLin Ling struct dmu_tx; 42*3f9d6ad7SLin Ling 43*3f9d6ad7SLin Ling /* 44*3f9d6ad7SLin Ling * All members of this structure must be uint64_t, for byteswap 45*3f9d6ad7SLin Ling * purposes. 46*3f9d6ad7SLin Ling */ 47*3f9d6ad7SLin Ling typedef struct dsl_scan_phys { 48*3f9d6ad7SLin Ling uint64_t scn_func; /* pool_scan_func_t */ 49*3f9d6ad7SLin Ling uint64_t scn_state; /* dsl_scan_state_t */ 50*3f9d6ad7SLin Ling uint64_t scn_queue_obj; 51*3f9d6ad7SLin Ling uint64_t scn_min_txg; 52*3f9d6ad7SLin Ling uint64_t scn_max_txg; 53*3f9d6ad7SLin Ling uint64_t scn_cur_min_txg; 54*3f9d6ad7SLin Ling uint64_t scn_cur_max_txg; 55*3f9d6ad7SLin Ling uint64_t scn_start_time; 56*3f9d6ad7SLin Ling uint64_t scn_end_time; 57*3f9d6ad7SLin Ling uint64_t scn_to_examine; /* total bytes to be scanned */ 58*3f9d6ad7SLin Ling uint64_t scn_examined; /* bytes scanned so far */ 59*3f9d6ad7SLin Ling uint64_t scn_to_process; 60*3f9d6ad7SLin Ling uint64_t scn_processed; 61*3f9d6ad7SLin Ling uint64_t scn_errors; /* scan I/O error count */ 62*3f9d6ad7SLin Ling uint64_t scn_ddt_class_max; 63*3f9d6ad7SLin Ling ddt_bookmark_t scn_ddt_bookmark; 64*3f9d6ad7SLin Ling zbookmark_t scn_bookmark; 65*3f9d6ad7SLin Ling uint64_t scn_flags; /* dsl_scan_flags_t */ 66*3f9d6ad7SLin Ling } dsl_scan_phys_t; 67*3f9d6ad7SLin Ling 68*3f9d6ad7SLin Ling #define SCAN_PHYS_NUMINTS (sizeof (dsl_scan_phys_t) / sizeof (uint64_t)) 69*3f9d6ad7SLin Ling 70*3f9d6ad7SLin Ling typedef enum dsl_scan_flags { 71*3f9d6ad7SLin Ling DSF_VISIT_DS_AGAIN = 1<<0, 72*3f9d6ad7SLin Ling } dsl_scan_flags_t; 73*3f9d6ad7SLin Ling 74*3f9d6ad7SLin Ling typedef struct dsl_scan { 75*3f9d6ad7SLin Ling struct dsl_pool *scn_dp; 76*3f9d6ad7SLin Ling 77*3f9d6ad7SLin Ling boolean_t scn_pausing; 78*3f9d6ad7SLin Ling uint64_t scn_restart_txg; 79*3f9d6ad7SLin Ling uint64_t scn_sync_start_time; 80*3f9d6ad7SLin Ling zio_t *scn_prefetch_zio_root; 81*3f9d6ad7SLin Ling 82*3f9d6ad7SLin Ling /* for debugging / information */ 83*3f9d6ad7SLin Ling uint64_t scn_visited_this_txg; 84*3f9d6ad7SLin Ling 85*3f9d6ad7SLin Ling dsl_scan_phys_t scn_phys; 86*3f9d6ad7SLin Ling } dsl_scan_t; 87*3f9d6ad7SLin Ling 88*3f9d6ad7SLin Ling int dsl_scan_init(struct dsl_pool *dp, uint64_t txg); 89*3f9d6ad7SLin Ling void dsl_scan_fini(struct dsl_pool *dp); 90*3f9d6ad7SLin Ling void dsl_scan_sync(struct dsl_pool *, dmu_tx_t *); 91*3f9d6ad7SLin Ling int dsl_scan_cancel(struct dsl_pool *); 92*3f9d6ad7SLin Ling int dsl_scan(struct dsl_pool *, pool_scan_func_t); 93*3f9d6ad7SLin Ling void dsl_resilver_restart(struct dsl_pool *, uint64_t txg); 94*3f9d6ad7SLin Ling boolean_t dsl_scan_resilvering(struct dsl_pool *dp); 95*3f9d6ad7SLin Ling boolean_t dsl_dataset_unstable(struct dsl_dataset *ds); 96*3f9d6ad7SLin Ling void dsl_scan_ddt_entry(dsl_scan_t *scn, enum zio_checksum checksum, 97*3f9d6ad7SLin Ling ddt_entry_t *dde, dmu_tx_t *tx); 98*3f9d6ad7SLin Ling void dsl_scan_ds_destroyed(struct dsl_dataset *ds, struct dmu_tx *tx); 99*3f9d6ad7SLin Ling void dsl_scan_ds_snapshotted(struct dsl_dataset *ds, struct dmu_tx *tx); 100*3f9d6ad7SLin Ling void dsl_scan_ds_clone_swapped(struct dsl_dataset *ds1, struct dsl_dataset *ds2, 101*3f9d6ad7SLin Ling struct dmu_tx *tx); 102*3f9d6ad7SLin Ling 103*3f9d6ad7SLin Ling #ifdef __cplusplus 104*3f9d6ad7SLin Ling } 105*3f9d6ad7SLin Ling #endif 106*3f9d6ad7SLin Ling 107*3f9d6ad7SLin Ling #endif /* _SYS_DSL_SCAN_H */ 108