diff options
Diffstat (limited to 'include/sys/vdev_raidz.h')
| -rw-r--r-- | include/sys/vdev_raidz.h | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/include/sys/vdev_raidz.h b/include/sys/vdev_raidz.h deleted file mode 100644 index df8c2aed4045..000000000000 --- a/include/sys/vdev_raidz.h +++ /dev/null @@ -1,183 +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) 2016 Gvozden Neskovic <neskovic@compeng.uni-frankfurt.de>. - */ - -#ifndef _SYS_VDEV_RAIDZ_H -#define _SYS_VDEV_RAIDZ_H - -#include <sys/types.h> -#include <sys/zfs_rlock.h> - -#ifdef __cplusplus -extern "C" { -#endif - -struct zio; -struct raidz_col; -struct raidz_row; -struct raidz_map; -struct vdev_raidz; -struct uberblock; -#if !defined(_KERNEL) -struct kernel_param {}; -#endif - -/* - * vdev_raidz interface - */ -struct raidz_map *vdev_raidz_map_alloc(struct zio *, uint64_t, uint64_t, - uint64_t); -struct raidz_map *vdev_raidz_map_alloc_expanded(struct zio *, - uint64_t, uint64_t, uint64_t, uint64_t, uint64_t, uint64_t, boolean_t); -void vdev_raidz_map_free(struct raidz_map *); -void vdev_raidz_free(struct vdev_raidz *); -void vdev_raidz_generate_parity_row(struct raidz_map *, struct raidz_row *); -void vdev_raidz_generate_parity(struct raidz_map *); -void vdev_raidz_reconstruct(struct raidz_map *, const int *, int); -void vdev_raidz_child_done(zio_t *); -void vdev_raidz_io_done(zio_t *); -void vdev_raidz_checksum_error(zio_t *, struct raidz_col *, abd_t *); -struct raidz_row *vdev_raidz_row_alloc(int, zio_t *); -void vdev_raidz_reflow_copy_scratch(spa_t *); -void raidz_dtl_reassessed(vdev_t *); -boolean_t vdev_sit_out_reads(vdev_t *, zio_flag_t); -void vdev_raidz_sit_child(vdev_t *, uint64_t); -void vdev_raidz_unsit_child(vdev_t *); - -extern const zio_vsd_ops_t vdev_raidz_vsd_ops; - -/* - * vdev_raidz_math interface - */ -/* Required, but not used, by ZFS_MODULE_PARAM_CALL */ -extern uint32_t zfs_vdev_raidz_impl; -void vdev_raidz_math_init(void); -void vdev_raidz_math_fini(void); -const struct raidz_impl_ops *vdev_raidz_math_get_ops(void); -int vdev_raidz_math_generate(struct raidz_map *, struct raidz_row *); -int vdev_raidz_math_reconstruct(struct raidz_map *, struct raidz_row *, - const int *, const int *, const int); -int vdev_raidz_impl_set(const char *); -int vdev_raidz_impl_get(char *buffer, size_t size); - -typedef struct vdev_raidz_expand { - uint64_t vre_vdev_id; - - kmutex_t vre_lock; - kcondvar_t vre_cv; - - /* - * How much i/o is outstanding (issued and not completed). - */ - uint64_t vre_outstanding_bytes; - - /* - * Next offset to issue i/o for. - */ - uint64_t vre_offset; - - /* - * Lowest offset of a failed expansion i/o. The expansion will retry - * from here. Once the expansion thread notices the failure and exits, - * vre_failed_offset is reset back to UINT64_MAX, and - * vre_waiting_for_resilver will be set. - */ - uint64_t vre_failed_offset; - boolean_t vre_waiting_for_resilver; - - /* - * Offset that is completing each txg - */ - uint64_t vre_offset_pertxg[TXG_SIZE]; - - /* - * Bytes copied in each txg. - */ - uint64_t vre_bytes_copied_pertxg[TXG_SIZE]; - - /* - * The rangelock prevents normal read/write zio's from happening while - * there are expansion (reflow) i/os in progress to the same offsets. - */ - zfs_rangelock_t vre_rangelock; - - /* - * These fields are stored on-disk in the vdev_top_zap: - */ - dsl_scan_state_t vre_state; - uint64_t vre_start_time; - uint64_t vre_end_time; - uint64_t vre_bytes_copied; -} vdev_raidz_expand_t; - -typedef struct vdev_raidz { - /* - * Number of child vdevs when this raidz vdev was created (i.e. before - * any raidz expansions). - */ - int vd_original_width; - - /* - * The current number of child vdevs, which may be more than the - * original width if an expansion is in progress or has completed. - */ - int vd_physical_width; - - int vd_nparity; - - /* - * Tree of reflow_node_t's. The lock protects the avl tree only. - * The reflow_node_t's describe completed expansions, and are used - * to determine the logical width given a block's birth time. - */ - avl_tree_t vd_expand_txgs; - kmutex_t vd_expand_lock; - - /* - * If this vdev is being expanded, spa_raidz_expand is set to this - */ - vdev_raidz_expand_t vn_vre; -} vdev_raidz_t; - -extern int vdev_raidz_attach_check(vdev_t *); -extern void vdev_raidz_attach_sync(void *, dmu_tx_t *); -extern void spa_start_raidz_expansion_thread(spa_t *); -extern int spa_raidz_expand_get_stats(spa_t *, pool_raidz_expand_stat_t *); -extern int vdev_raidz_load(vdev_t *); - -/* RAIDZ scratch area pause points (for testing) */ -#define RAIDZ_EXPAND_PAUSE_NONE 0 -#define RAIDZ_EXPAND_PAUSE_PRE_SCRATCH_1 1 -#define RAIDZ_EXPAND_PAUSE_PRE_SCRATCH_2 2 -#define RAIDZ_EXPAND_PAUSE_PRE_SCRATCH_3 3 -#define RAIDZ_EXPAND_PAUSE_SCRATCH_VALID 4 -#define RAIDZ_EXPAND_PAUSE_SCRATCH_REFLOWED 5 -#define RAIDZ_EXPAND_PAUSE_SCRATCH_POST_REFLOW_1 6 -#define RAIDZ_EXPAND_PAUSE_SCRATCH_POST_REFLOW_2 7 - -#ifdef __cplusplus -} -#endif - -#endif /* _SYS_VDEV_RAIDZ_H */ |