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/*
* 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 http://www.opensolaris.org/os/licensing.
* 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) 2018, Intel Corporation.
* Copyright (c) 2020 by Lawrence Livermore National Security, LLC.
*/
#ifndef _SYS_VDEV_REBUILD_H
#define _SYS_VDEV_REBUILD_H
#include <sys/spa.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Number of entries in the physical vdev_rebuild_phys structure. This
* state is stored per top-level as VDEV_ZAP_TOP_VDEV_REBUILD_PHYS.
*/
#define REBUILD_PHYS_ENTRIES 12
/*
* On-disk rebuild configuration and state. When adding new fields they
* must be added to the end of the structure.
*/
typedef struct vdev_rebuild_phys {
uint64_t vrp_rebuild_state; /* vdev_rebuild_state_t */
uint64_t vrp_last_offset; /* last rebuilt offset */
uint64_t vrp_min_txg; /* minimum missing txg */
uint64_t vrp_max_txg; /* maximum missing txg */
uint64_t vrp_start_time; /* start time */
uint64_t vrp_end_time; /* end time */
uint64_t vrp_scan_time_ms; /* total run time in ms */
uint64_t vrp_bytes_scanned; /* alloc bytes scanned */
uint64_t vrp_bytes_issued; /* read bytes rebuilt */
uint64_t vrp_bytes_rebuilt; /* rebuilt bytes */
uint64_t vrp_bytes_est; /* total bytes to scan */
uint64_t vrp_errors; /* errors during rebuild */
} vdev_rebuild_phys_t;
/*
* The vdev_rebuild_t describes the current state and how a top-level vdev
* should be rebuilt. The core elements are the top-vdev, the metaslab being
* rebuilt, range tree containing the allocated extents and the on-disk state.
*/
typedef struct vdev_rebuild {
vdev_t *vr_top_vdev; /* top-level vdev to rebuild */
metaslab_t *vr_scan_msp; /* scanning disabled metaslab */
range_tree_t *vr_scan_tree; /* scan ranges (in metaslab) */
kmutex_t vr_io_lock; /* inflight IO lock */
kcondvar_t vr_io_cv; /* inflight IO cv */
/* In-core state and progress */
uint64_t vr_scan_offset[TXG_SIZE];
uint64_t vr_prev_scan_time_ms; /* any previous scan time */
uint64_t vr_bytes_inflight_max; /* maximum bytes inflight */
uint64_t vr_bytes_inflight; /* current bytes inflight */
/* Per-rebuild pass statistics for calculating bandwidth */
uint64_t vr_pass_start_time;
uint64_t vr_pass_bytes_scanned;
uint64_t vr_pass_bytes_issued;
/* On-disk state updated by vdev_rebuild_zap_update_sync() */
vdev_rebuild_phys_t vr_rebuild_phys;
} vdev_rebuild_t;
boolean_t vdev_rebuild_active(vdev_t *);
int vdev_rebuild_load(vdev_t *);
void vdev_rebuild(vdev_t *);
void vdev_rebuild_stop_wait(vdev_t *);
void vdev_rebuild_stop_all(spa_t *);
void vdev_rebuild_restart(spa_t *);
void vdev_rebuild_clear_sync(void *, dmu_tx_t *);
int vdev_rebuild_get_stats(vdev_t *, vdev_rebuild_stat_t *);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_VDEV_REBUILD_H */
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