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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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#ifndef _SYS_SPA_IMPL_H
+#define _SYS_SPA_IMPL_H
+
+#include <sys/spa.h>
+#include <sys/vdev.h>
+#include <sys/metaslab.h>
+#include <sys/dmu.h>
+#include <sys/dsl_pool.h>
+#include <sys/uberblock_impl.h>
+#include <sys/zfs_context.h>
+#include <sys/avl.h>
+#include <sys/refcount.h>
+#include <sys/bplist.h>
+#include <sys/bpobj.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct spa_error_entry {
+ zbookmark_t se_bookmark;
+ char *se_name;
+ avl_node_t se_avl;
+} spa_error_entry_t;
+
+typedef struct spa_history_phys {
+ uint64_t sh_pool_create_len; /* ending offset of zpool create */
+ uint64_t sh_phys_max_off; /* physical EOF */
+ uint64_t sh_bof; /* logical BOF */
+ uint64_t sh_eof; /* logical EOF */
+ uint64_t sh_records_lost; /* num of records overwritten */
+} spa_history_phys_t;
+
+struct spa_aux_vdev {
+ uint64_t sav_object; /* MOS object for device list */
+ nvlist_t *sav_config; /* cached device config */
+ vdev_t **sav_vdevs; /* devices */
+ int sav_count; /* number devices */
+ boolean_t sav_sync; /* sync the device list */
+ nvlist_t **sav_pending; /* pending device additions */
+ uint_t sav_npending; /* # pending devices */
+};
+
+typedef struct spa_config_lock {
+ kmutex_t scl_lock;
+ kthread_t *scl_writer;
+ int scl_write_wanted;
+ kcondvar_t scl_cv;
+ refcount_t scl_count;
+} spa_config_lock_t;
+
+typedef struct spa_config_dirent {
+ list_node_t scd_link;
+ char *scd_path;
+} spa_config_dirent_t;
+
+enum zio_taskq_type {
+ ZIO_TASKQ_ISSUE = 0,
+ ZIO_TASKQ_ISSUE_HIGH,
+ ZIO_TASKQ_INTERRUPT,
+ ZIO_TASKQ_INTERRUPT_HIGH,
+ ZIO_TASKQ_TYPES
+};
+
+/*
+ * State machine for the zpool-pooname process. The states transitions
+ * are done as follows:
+ *
+ * From To Routine
+ * PROC_NONE -> PROC_CREATED spa_activate()
+ * PROC_CREATED -> PROC_ACTIVE spa_thread()
+ * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate()
+ * PROC_DEACTIVATE -> PROC_GONE spa_thread()
+ * PROC_GONE -> PROC_NONE spa_deactivate()
+ */
+typedef enum spa_proc_state {
+ SPA_PROC_NONE, /* spa_proc = &p0, no process created */
+ SPA_PROC_CREATED, /* spa_activate() has proc, is waiting */
+ SPA_PROC_ACTIVE, /* taskqs created, spa_proc set */
+ SPA_PROC_DEACTIVATE, /* spa_deactivate() requests process exit */
+ SPA_PROC_GONE /* spa_thread() is exiting, spa_proc = &p0 */
+} spa_proc_state_t;
+
+struct spa {
+ /*
+ * Fields protected by spa_namespace_lock.
+ */
+ char spa_name[MAXNAMELEN]; /* pool name */
+ avl_node_t spa_avl; /* node in spa_namespace_avl */
+ nvlist_t *spa_config; /* last synced config */
+ nvlist_t *spa_config_syncing; /* currently syncing config */
+ nvlist_t *spa_config_splitting; /* config for splitting */
+ nvlist_t *spa_load_info; /* info and errors from load */
+ uint64_t spa_config_txg; /* txg of last config change */
+ int spa_sync_pass; /* iterate-to-convergence */
+ pool_state_t spa_state; /* pool state */
+ int spa_inject_ref; /* injection references */
+ uint8_t spa_sync_on; /* sync threads are running */
+ spa_load_state_t spa_load_state; /* current load operation */
+ uint64_t spa_import_flags; /* import specific flags */
+ taskq_t *spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES];
+ dsl_pool_t *spa_dsl_pool;
+ metaslab_class_t *spa_normal_class; /* normal data class */
+ metaslab_class_t *spa_log_class; /* intent log data class */
+ uint64_t spa_first_txg; /* first txg after spa_open() */
+ uint64_t spa_final_txg; /* txg of export/destroy */
+ uint64_t spa_freeze_txg; /* freeze pool at this txg */
+ uint64_t spa_load_max_txg; /* best initial ub_txg */
+ uint64_t spa_claim_max_txg; /* highest claimed birth txg */
+ timespec_t spa_loaded_ts; /* 1st successful open time */
+ objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */
+ txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */
+ vdev_t *spa_root_vdev; /* top-level vdev container */
+ uint64_t spa_load_guid; /* initial guid for spa_load */
+ list_t spa_config_dirty_list; /* vdevs with dirty config */
+ list_t spa_state_dirty_list; /* vdevs with dirty state */
+ spa_aux_vdev_t spa_spares; /* hot spares */
+ spa_aux_vdev_t spa_l2cache; /* L2ARC cache devices */
+ uint64_t spa_config_object; /* MOS object for pool config */
+ uint64_t spa_config_generation; /* config generation number */
+ uint64_t spa_syncing_txg; /* txg currently syncing */
+ bpobj_t spa_deferred_bpobj; /* deferred-free bplist */
+ bplist_t spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */
+ uberblock_t spa_ubsync; /* last synced uberblock */
+ uberblock_t spa_uberblock; /* current uberblock */
+ boolean_t spa_extreme_rewind; /* rewind past deferred frees */
+ uint64_t spa_last_io; /* lbolt of last non-scan I/O */
+ kmutex_t spa_scrub_lock; /* resilver/scrub lock */
+ uint64_t spa_scrub_inflight; /* in-flight scrub I/Os */
+ kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */
+ uint8_t spa_scrub_active; /* active or suspended? */
+ uint8_t spa_scrub_type; /* type of scrub we're doing */
+ uint8_t spa_scrub_finished; /* indicator to rotate logs */
+ uint8_t spa_scrub_started; /* started since last boot */
+ uint8_t spa_scrub_reopen; /* scrub doing vdev_reopen */
+ uint64_t spa_scan_pass_start; /* start time per pass/reboot */
+ uint64_t spa_scan_pass_exam; /* examined bytes per pass */
+ kmutex_t spa_async_lock; /* protect async state */
+ kthread_t *spa_async_thread; /* thread doing async task */
+ int spa_async_suspended; /* async tasks suspended */
+ kcondvar_t spa_async_cv; /* wait for thread_exit() */
+ uint16_t spa_async_tasks; /* async task mask */
+ char *spa_root; /* alternate root directory */
+ uint64_t spa_ena; /* spa-wide ereport ENA */
+ int spa_last_open_failed; /* error if last open failed */
+ uint64_t spa_last_ubsync_txg; /* "best" uberblock txg */
+ uint64_t spa_last_ubsync_txg_ts; /* timestamp from that ub */
+ uint64_t spa_load_txg; /* ub txg that loaded */
+ uint64_t spa_load_txg_ts; /* timestamp from that ub */
+ uint64_t spa_load_meta_errors; /* verify metadata err count */
+ uint64_t spa_load_data_errors; /* verify data err count */
+ uint64_t spa_verify_min_txg; /* start txg of verify scrub */
+ kmutex_t spa_errlog_lock; /* error log lock */
+ uint64_t spa_errlog_last; /* last error log object */
+ uint64_t spa_errlog_scrub; /* scrub error log object */
+ kmutex_t spa_errlist_lock; /* error list/ereport lock */
+ avl_tree_t spa_errlist_last; /* last error list */
+ avl_tree_t spa_errlist_scrub; /* scrub error list */
+ uint64_t spa_deflate; /* should we deflate? */
+ uint64_t spa_history; /* history object */
+ kmutex_t spa_history_lock; /* history lock */
+ vdev_t *spa_pending_vdev; /* pending vdev additions */
+ kmutex_t spa_props_lock; /* property lock */
+ uint64_t spa_pool_props_object; /* object for properties */
+ uint64_t spa_bootfs; /* default boot filesystem */
+ uint64_t spa_failmode; /* failure mode for the pool */
+ uint64_t spa_delegation; /* delegation on/off */
+ list_t spa_config_list; /* previous cache file(s) */
+ zio_t *spa_async_zio_root; /* root of all async I/O */
+ zio_t *spa_suspend_zio_root; /* root of all suspended I/O */
+ kmutex_t spa_suspend_lock; /* protects suspend_zio_root */
+ kcondvar_t spa_suspend_cv; /* notification of resume */
+ uint8_t spa_suspended; /* pool is suspended */
+ uint8_t spa_claiming; /* pool is doing zil_claim() */
+ boolean_t spa_is_root; /* pool is root */
+ int spa_minref; /* num refs when first opened */
+ int spa_mode; /* FREAD | FWRITE */
+ spa_log_state_t spa_log_state; /* log state */
+ uint64_t spa_autoexpand; /* lun expansion on/off */
+ ddt_t *spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */
+ uint64_t spa_ddt_stat_object; /* DDT statistics */
+ uint64_t spa_dedup_ditto; /* dedup ditto threshold */
+ uint64_t spa_dedup_checksum; /* default dedup checksum */
+ uint64_t spa_dspace; /* dspace in normal class */
+ kmutex_t spa_vdev_top_lock; /* dueling offline/remove */
+ kmutex_t spa_proc_lock; /* protects spa_proc* */
+ kcondvar_t spa_proc_cv; /* spa_proc_state transitions */
+ spa_proc_state_t spa_proc_state; /* see definition */
+ struct proc *spa_proc; /* "zpool-poolname" process */
+ uint64_t spa_did; /* if procp != p0, did of t1 */
+ boolean_t spa_autoreplace; /* autoreplace set in open */
+ int spa_vdev_locks; /* locks grabbed */
+ uint64_t spa_creation_version; /* version at pool creation */
+ uint64_t spa_prev_software_version;
+ /*
+ * spa_refcnt & spa_config_lock must be the last elements
+ * because refcount_t changes size based on compilation options.
+ * In order for the MDB module to function correctly, the other
+ * fields must remain in the same location.
+ */
+ spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
+ refcount_t spa_refcount; /* number of opens */
+};
+
+extern const char *spa_config_path;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_SPA_IMPL_H */