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Diffstat (limited to 'include/sys/dsl_scan.h')
| -rw-r--r-- | include/sys/dsl_scan.h | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/include/sys/dsl_scan.h b/include/sys/dsl_scan.h deleted file mode 100644 index 44cca14794e0..000000000000 --- a/include/sys/dsl_scan.h +++ /dev/null @@ -1,229 +0,0 @@ -// SPDX-License-Identifier: CDDL-1.0 -/* - * 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 https://opensource.org/licenses/CDDL-1.0. - * 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) 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2012, 2017 by Delphix. All rights reserved. - * Copyright (c) 2017, 2019, Datto Inc. All rights reserved. - */ - -#ifndef _SYS_DSL_SCAN_H -#define _SYS_DSL_SCAN_H - -#include <sys/zfs_context.h> -#include <sys/zio.h> -#include <sys/zap.h> -#include <sys/ddt.h> -#include <sys/bplist.h> - -#ifdef __cplusplus -extern "C" { -#endif - -struct objset; -struct dsl_dir; -struct dsl_dataset; -struct dsl_pool; -struct dmu_tx; - -extern int zfs_scan_suspend_progress; - -/* - * All members of this structure must be uint64_t, for byteswap - * purposes. - */ -typedef struct dsl_scan_phys { - uint64_t scn_func; /* pool_scan_func_t */ - uint64_t scn_state; /* dsl_scan_state_t */ - uint64_t scn_queue_obj; - uint64_t scn_min_txg; - uint64_t scn_max_txg; - uint64_t scn_cur_min_txg; - uint64_t scn_cur_max_txg; - uint64_t scn_start_time; - uint64_t scn_end_time; - uint64_t scn_to_examine; /* total bytes to be scanned */ - uint64_t scn_examined; /* bytes scanned so far */ - uint64_t scn_skipped; /* bytes skipped by scanner */ - uint64_t scn_processed; - uint64_t scn_errors; /* scan I/O error count */ - uint64_t scn_ddt_class_max; - ddt_bookmark_t scn_ddt_bookmark; - zbookmark_phys_t scn_bookmark; - uint64_t scn_flags; /* dsl_scan_flags_t */ -} dsl_scan_phys_t; - -#define SCAN_PHYS_NUMINTS (sizeof (dsl_scan_phys_t) / sizeof (uint64_t)) - -typedef enum dsl_scan_flags { - DSF_VISIT_DS_AGAIN = 1<<0, - DSF_SCRUB_PAUSED = 1<<1, -} dsl_scan_flags_t; - -#define DSL_SCAN_FLAGS_MASK (DSF_VISIT_DS_AGAIN) - -typedef struct dsl_errorscrub_phys { - uint64_t dep_func; /* pool_scan_func_t */ - uint64_t dep_state; /* dsl_scan_state_t */ - uint64_t dep_cursor; /* serialized zap cursor for tracing progress */ - uint64_t dep_start_time; /* error scrub start time, unix timestamp */ - uint64_t dep_end_time; /* error scrub end time, unix timestamp */ - uint64_t dep_to_examine; /* total error blocks to be scrubbed */ - uint64_t dep_examined; /* blocks scrubbed so far */ - uint64_t dep_errors; /* error scrub I/O error count */ - uint64_t dep_paused_flags; /* flag for paused */ -} dsl_errorscrub_phys_t; - -#define ERRORSCRUB_PHYS_NUMINTS (sizeof (dsl_errorscrub_phys_t) \ - / sizeof (uint64_t)) - -/* - * Every pool will have one dsl_scan_t and this structure will contain - * in-memory information about the scan and a pointer to the on-disk - * representation (i.e. dsl_scan_phys_t). Most of the state of the scan - * is contained on-disk to allow the scan to resume in the event of a reboot - * or panic. This structure maintains information about the behavior of a - * running scan, some caching information, and how it should traverse the pool. - * - * The following members of this structure direct the behavior of the scan: - * - * scn_suspending - a scan that cannot be completed in a single txg or - * has exceeded its allotted time will need to suspend. - * When this flag is set the scanner will stop traversing - * the pool and write out the current state to disk. - * - * scn_restart_txg - directs the scanner to either restart or start a - * a scan at the specified txg value. - * - * scn_done_txg - when a scan completes its traversal it will set - * the completion txg to the next txg. This is necessary - * to ensure that any blocks that were freed during - * the scan but have not yet been processed (i.e deferred - * frees) are accounted for. - * - * This structure also maintains information about deferred frees which are - * a special kind of traversal. Deferred free can exist in either a bptree or - * a bpobj structure. The scn_is_bptree flag will indicate the type of - * deferred free that is in progress. If the deferred free is part of an - * asynchronous destroy then the scn_async_destroying flag will be set. - */ -typedef struct dsl_scan { - struct dsl_pool *scn_dp; - uint64_t scn_restart_txg; - uint64_t scn_done_txg; - uint64_t scn_sync_start_time; - uint64_t scn_issued_before_pass; - - /* for freeing blocks */ - boolean_t scn_is_bptree; - boolean_t scn_async_destroying; - boolean_t scn_async_stalled; - uint64_t scn_async_block_min_time_ms; - - /* flags and stats for controlling scan state */ - boolean_t scn_is_sorted; /* doing sequential scan */ - boolean_t scn_clearing; /* scan is issuing sequential extents */ - boolean_t scn_checkpointing; /* scan is issuing all queued extents */ - boolean_t scn_suspending; /* scan is suspending until next txg */ - uint64_t scn_last_checkpoint; /* time of last checkpoint */ - - /* members for thread synchronization */ - zio_t *scn_zio_root; /* root zio for waiting on IO */ - taskq_t *scn_taskq; /* task queue for issuing extents */ - - /* for controlling scan prefetch, protected by spa_scrub_lock */ - boolean_t scn_prefetch_stop; /* prefetch should stop */ - zbookmark_phys_t scn_prefetch_bookmark; /* prefetch start bookmark */ - avl_tree_t scn_prefetch_queue; /* priority queue of prefetch IOs */ - uint64_t scn_maxinflight_bytes; /* max bytes in flight for pool */ - - /* per txg statistics */ - uint64_t scn_visited_this_txg; /* total bps visited this txg */ - uint64_t scn_dedup_frees_this_txg; /* dedup bps freed this txg */ - uint64_t scn_holes_this_txg; - uint64_t scn_lt_min_this_txg; - uint64_t scn_gt_max_this_txg; - uint64_t scn_ddt_contained_this_txg; - uint64_t scn_objsets_visited_this_txg; - uint64_t scn_avg_seg_size_this_txg; - uint64_t scn_segs_this_txg; - uint64_t scn_avg_zio_size_this_txg; - uint64_t scn_zios_this_txg; - - /* zap cursor for tracing error scrub progress */ - zap_cursor_t errorscrub_cursor; - /* members needed for syncing scan status to disk */ - dsl_scan_phys_t scn_phys; /* on disk representation of scan */ - dsl_scan_phys_t scn_phys_cached; - avl_tree_t scn_queue; /* queue of datasets to scan */ - kmutex_t scn_queue_lock; /* serializes scn_queue inserts */ - uint64_t scn_queues_pending; /* outstanding data to issue */ - /* members needed for syncing error scrub status to disk */ - dsl_errorscrub_phys_t errorscrub_phys; -} dsl_scan_t; - -typedef struct { - pool_scan_func_t func; - uint64_t txgstart; - uint64_t txgend; -} setup_sync_arg_t; - -typedef struct dsl_scan_io_queue dsl_scan_io_queue_t; - -void scan_init(void); -void scan_fini(void); -int dsl_scan_init(struct dsl_pool *dp, uint64_t txg); -int dsl_scan_setup_check(void *, dmu_tx_t *); -void dsl_scan_setup_sync(void *, dmu_tx_t *); -void dsl_scan_fini(struct dsl_pool *dp); -void dsl_scan_sync(struct dsl_pool *, dmu_tx_t *); -int dsl_scan_cancel(struct dsl_pool *); -int dsl_scan(struct dsl_pool *, pool_scan_func_t, uint64_t starttxg, - uint64_t txgend); -void dsl_scan_assess_vdev(struct dsl_pool *dp, vdev_t *vd); -boolean_t dsl_scan_scrubbing(const struct dsl_pool *dp); -boolean_t dsl_errorscrubbing(const struct dsl_pool *dp); -boolean_t dsl_errorscrub_active(dsl_scan_t *scn); -void dsl_scan_restart_resilver(struct dsl_pool *, uint64_t txg); -int dsl_scrub_set_pause_resume(const struct dsl_pool *dp, - pool_scrub_cmd_t cmd); -void dsl_errorscrub_sync(struct dsl_pool *, dmu_tx_t *); -boolean_t dsl_scan_resilvering(struct dsl_pool *dp); -boolean_t dsl_scan_resilver_scheduled(struct dsl_pool *dp); -boolean_t dsl_dataset_unstable(struct dsl_dataset *ds); -void dsl_scan_ddt_entry(dsl_scan_t *scn, enum zio_checksum checksum, - ddt_t *ddt, ddt_lightweight_entry_t *ddlwe, dmu_tx_t *tx); -void dsl_scan_ds_destroyed(struct dsl_dataset *ds, struct dmu_tx *tx); -void dsl_scan_ds_snapshotted(struct dsl_dataset *ds, struct dmu_tx *tx); -void dsl_scan_ds_clone_swapped(struct dsl_dataset *ds1, struct dsl_dataset *ds2, - struct dmu_tx *tx); -boolean_t dsl_scan_active(dsl_scan_t *scn); -boolean_t dsl_scan_is_paused_scrub(const dsl_scan_t *scn); -boolean_t dsl_errorscrub_is_paused(const dsl_scan_t *scn); -void dsl_scan_freed(spa_t *spa, const blkptr_t *bp); -void dsl_scan_io_queue_destroy(dsl_scan_io_queue_t *queue); -void dsl_scan_io_queue_vdev_xfer(vdev_t *svd, vdev_t *tvd); - -#ifdef __cplusplus -} -#endif - -#endif /* _SYS_DSL_SCAN_H */ |