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2619 asynchronous destruction of ZFS file systems
2747 SPA versioning with zfs feature flags
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <gwilson@delphix.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>
Approved by: Dan McDonald <danmcd@nexenta.com>


   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2011 by Delphix. All rights reserved.
  24  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  25  */
  26 
  27 #ifndef _SYS_SPA_IMPL_H
  28 #define _SYS_SPA_IMPL_H
  29 
  30 #include <sys/spa.h>
  31 #include <sys/vdev.h>
  32 #include <sys/metaslab.h>
  33 #include <sys/dmu.h>
  34 #include <sys/dsl_pool.h>
  35 #include <sys/uberblock_impl.h>
  36 #include <sys/zfs_context.h>
  37 #include <sys/avl.h>
  38 #include <sys/refcount.h>
  39 #include <sys/bplist.h>
  40 #include <sys/bpobj.h>
  41 
  42 #ifdef  __cplusplus
  43 extern "C" {


 110 struct spa {
 111         /*
 112          * Fields protected by spa_namespace_lock.
 113          */
 114         char            spa_name[MAXNAMELEN];   /* pool name */
 115         char            *spa_comment;           /* comment */
 116         avl_node_t      spa_avl;                /* node in spa_namespace_avl */
 117         nvlist_t        *spa_config;            /* last synced config */
 118         nvlist_t        *spa_config_syncing;    /* currently syncing config */
 119         nvlist_t        *spa_config_splitting;  /* config for splitting */
 120         nvlist_t        *spa_load_info;         /* info and errors from load */
 121         uint64_t        spa_config_txg;         /* txg of last config change */
 122         int             spa_sync_pass;          /* iterate-to-convergence */
 123         pool_state_t    spa_state;              /* pool state */
 124         int             spa_inject_ref;         /* injection references */
 125         uint8_t         spa_sync_on;            /* sync threads are running */
 126         spa_load_state_t spa_load_state;        /* current load operation */
 127         uint64_t        spa_import_flags;       /* import specific flags */
 128         taskq_t         *spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES];
 129         dsl_pool_t      *spa_dsl_pool;

 130         metaslab_class_t *spa_normal_class;     /* normal data class */
 131         metaslab_class_t *spa_log_class;        /* intent log data class */
 132         uint64_t        spa_first_txg;          /* first txg after spa_open() */
 133         uint64_t        spa_final_txg;          /* txg of export/destroy */
 134         uint64_t        spa_freeze_txg;         /* freeze pool at this txg */
 135         uint64_t        spa_load_max_txg;       /* best initial ub_txg */
 136         uint64_t        spa_claim_max_txg;      /* highest claimed birth txg */
 137         timespec_t      spa_loaded_ts;          /* 1st successful open time */
 138         objset_t        *spa_meta_objset;       /* copy of dp->dp_meta_objset */
 139         txg_list_t      spa_vdev_txg_list;      /* per-txg dirty vdev list */
 140         vdev_t          *spa_root_vdev;         /* top-level vdev container */
 141         uint64_t        spa_config_guid;        /* config pool guid */
 142         uint64_t        spa_load_guid;          /* spa_load initialized guid */
 143         list_t          spa_config_dirty_list;  /* vdevs with dirty config */
 144         list_t          spa_state_dirty_list;   /* vdevs with dirty state */
 145         spa_aux_vdev_t  spa_spares;             /* hot spares */
 146         spa_aux_vdev_t  spa_l2cache;            /* L2ARC cache devices */

 147         uint64_t        spa_config_object;      /* MOS object for pool config */
 148         uint64_t        spa_config_generation;  /* config generation number */
 149         uint64_t        spa_syncing_txg;        /* txg currently syncing */
 150         bpobj_t         spa_deferred_bpobj;     /* deferred-free bplist */
 151         bplist_t        spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */
 152         uberblock_t     spa_ubsync;             /* last synced uberblock */
 153         uberblock_t     spa_uberblock;          /* current uberblock */
 154         boolean_t       spa_extreme_rewind;     /* rewind past deferred frees */
 155         uint64_t        spa_last_io;            /* lbolt of last non-scan I/O */
 156         kmutex_t        spa_scrub_lock;         /* resilver/scrub lock */
 157         uint64_t        spa_scrub_inflight;     /* in-flight scrub I/Os */
 158         kcondvar_t      spa_scrub_io_cv;        /* scrub I/O completion */
 159         uint8_t         spa_scrub_active;       /* active or suspended? */
 160         uint8_t         spa_scrub_type;         /* type of scrub we're doing */
 161         uint8_t         spa_scrub_finished;     /* indicator to rotate logs */
 162         uint8_t         spa_scrub_started;      /* started since last boot */
 163         uint8_t         spa_scrub_reopen;       /* scrub doing vdev_reopen */
 164         uint64_t        spa_scan_pass_start;    /* start time per pass/reboot */
 165         uint64_t        spa_scan_pass_exam;     /* examined bytes per pass */
 166         kmutex_t        spa_async_lock;         /* protect async state */


 203         boolean_t       spa_debug;              /* debug enabled? */
 204         boolean_t       spa_is_root;            /* pool is root */
 205         int             spa_minref;             /* num refs when first opened */
 206         int             spa_mode;               /* FREAD | FWRITE */
 207         spa_log_state_t spa_log_state;          /* log state */
 208         uint64_t        spa_autoexpand;         /* lun expansion on/off */
 209         ddt_t           *spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */
 210         uint64_t        spa_ddt_stat_object;    /* DDT statistics */
 211         uint64_t        spa_dedup_ditto;        /* dedup ditto threshold */
 212         uint64_t        spa_dedup_checksum;     /* default dedup checksum */
 213         uint64_t        spa_dspace;             /* dspace in normal class */
 214         kmutex_t        spa_vdev_top_lock;      /* dueling offline/remove */
 215         kmutex_t        spa_proc_lock;          /* protects spa_proc* */
 216         kcondvar_t      spa_proc_cv;            /* spa_proc_state transitions */
 217         spa_proc_state_t spa_proc_state;        /* see definition */
 218         struct proc     *spa_proc;              /* "zpool-poolname" process */
 219         uint64_t        spa_did;                /* if procp != p0, did of t1 */
 220         boolean_t       spa_autoreplace;        /* autoreplace set in open */
 221         int             spa_vdev_locks;         /* locks grabbed */
 222         uint64_t        spa_creation_version;   /* version at pool creation */
 223         uint64_t        spa_prev_software_version;



 224         /*
 225          * spa_refcnt & spa_config_lock must be the last elements
 226          * because refcount_t changes size based on compilation options.
 227          * In order for the MDB module to function correctly, the other
 228          * fields must remain in the same location.
 229          */
 230         spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
 231         refcount_t      spa_refcount;           /* number of opens */
 232 };
 233 
 234 extern const char *spa_config_path;
 235 
 236 #ifdef  __cplusplus
 237 }
 238 #endif
 239 
 240 #endif  /* _SYS_SPA_IMPL_H */


   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2012 by Delphix. All rights reserved.
  24  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  25  */
  26 
  27 #ifndef _SYS_SPA_IMPL_H
  28 #define _SYS_SPA_IMPL_H
  29 
  30 #include <sys/spa.h>
  31 #include <sys/vdev.h>
  32 #include <sys/metaslab.h>
  33 #include <sys/dmu.h>
  34 #include <sys/dsl_pool.h>
  35 #include <sys/uberblock_impl.h>
  36 #include <sys/zfs_context.h>
  37 #include <sys/avl.h>
  38 #include <sys/refcount.h>
  39 #include <sys/bplist.h>
  40 #include <sys/bpobj.h>
  41 
  42 #ifdef  __cplusplus
  43 extern "C" {


 110 struct spa {
 111         /*
 112          * Fields protected by spa_namespace_lock.
 113          */
 114         char            spa_name[MAXNAMELEN];   /* pool name */
 115         char            *spa_comment;           /* comment */
 116         avl_node_t      spa_avl;                /* node in spa_namespace_avl */
 117         nvlist_t        *spa_config;            /* last synced config */
 118         nvlist_t        *spa_config_syncing;    /* currently syncing config */
 119         nvlist_t        *spa_config_splitting;  /* config for splitting */
 120         nvlist_t        *spa_load_info;         /* info and errors from load */
 121         uint64_t        spa_config_txg;         /* txg of last config change */
 122         int             spa_sync_pass;          /* iterate-to-convergence */
 123         pool_state_t    spa_state;              /* pool state */
 124         int             spa_inject_ref;         /* injection references */
 125         uint8_t         spa_sync_on;            /* sync threads are running */
 126         spa_load_state_t spa_load_state;        /* current load operation */
 127         uint64_t        spa_import_flags;       /* import specific flags */
 128         taskq_t         *spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES];
 129         dsl_pool_t      *spa_dsl_pool;
 130         boolean_t       spa_is_initializing;    /* true while opening pool */
 131         metaslab_class_t *spa_normal_class;     /* normal data class */
 132         metaslab_class_t *spa_log_class;        /* intent log data class */
 133         uint64_t        spa_first_txg;          /* first txg after spa_open() */
 134         uint64_t        spa_final_txg;          /* txg of export/destroy */
 135         uint64_t        spa_freeze_txg;         /* freeze pool at this txg */
 136         uint64_t        spa_load_max_txg;       /* best initial ub_txg */
 137         uint64_t        spa_claim_max_txg;      /* highest claimed birth txg */
 138         timespec_t      spa_loaded_ts;          /* 1st successful open time */
 139         objset_t        *spa_meta_objset;       /* copy of dp->dp_meta_objset */
 140         txg_list_t      spa_vdev_txg_list;      /* per-txg dirty vdev list */
 141         vdev_t          *spa_root_vdev;         /* top-level vdev container */
 142         uint64_t        spa_config_guid;        /* config pool guid */
 143         uint64_t        spa_load_guid;          /* spa_load initialized guid */
 144         list_t          spa_config_dirty_list;  /* vdevs with dirty config */
 145         list_t          spa_state_dirty_list;   /* vdevs with dirty state */
 146         spa_aux_vdev_t  spa_spares;             /* hot spares */
 147         spa_aux_vdev_t  spa_l2cache;            /* L2ARC cache devices */
 148         nvlist_t        *spa_label_features;    /* Features for reading MOS */
 149         uint64_t        spa_config_object;      /* MOS object for pool config */
 150         uint64_t        spa_config_generation;  /* config generation number */
 151         uint64_t        spa_syncing_txg;        /* txg currently syncing */
 152         bpobj_t         spa_deferred_bpobj;     /* deferred-free bplist */
 153         bplist_t        spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */
 154         uberblock_t     spa_ubsync;             /* last synced uberblock */
 155         uberblock_t     spa_uberblock;          /* current uberblock */
 156         boolean_t       spa_extreme_rewind;     /* rewind past deferred frees */
 157         uint64_t        spa_last_io;            /* lbolt of last non-scan I/O */
 158         kmutex_t        spa_scrub_lock;         /* resilver/scrub lock */
 159         uint64_t        spa_scrub_inflight;     /* in-flight scrub I/Os */
 160         kcondvar_t      spa_scrub_io_cv;        /* scrub I/O completion */
 161         uint8_t         spa_scrub_active;       /* active or suspended? */
 162         uint8_t         spa_scrub_type;         /* type of scrub we're doing */
 163         uint8_t         spa_scrub_finished;     /* indicator to rotate logs */
 164         uint8_t         spa_scrub_started;      /* started since last boot */
 165         uint8_t         spa_scrub_reopen;       /* scrub doing vdev_reopen */
 166         uint64_t        spa_scan_pass_start;    /* start time per pass/reboot */
 167         uint64_t        spa_scan_pass_exam;     /* examined bytes per pass */
 168         kmutex_t        spa_async_lock;         /* protect async state */


 205         boolean_t       spa_debug;              /* debug enabled? */
 206         boolean_t       spa_is_root;            /* pool is root */
 207         int             spa_minref;             /* num refs when first opened */
 208         int             spa_mode;               /* FREAD | FWRITE */
 209         spa_log_state_t spa_log_state;          /* log state */
 210         uint64_t        spa_autoexpand;         /* lun expansion on/off */
 211         ddt_t           *spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */
 212         uint64_t        spa_ddt_stat_object;    /* DDT statistics */
 213         uint64_t        spa_dedup_ditto;        /* dedup ditto threshold */
 214         uint64_t        spa_dedup_checksum;     /* default dedup checksum */
 215         uint64_t        spa_dspace;             /* dspace in normal class */
 216         kmutex_t        spa_vdev_top_lock;      /* dueling offline/remove */
 217         kmutex_t        spa_proc_lock;          /* protects spa_proc* */
 218         kcondvar_t      spa_proc_cv;            /* spa_proc_state transitions */
 219         spa_proc_state_t spa_proc_state;        /* see definition */
 220         struct proc     *spa_proc;              /* "zpool-poolname" process */
 221         uint64_t        spa_did;                /* if procp != p0, did of t1 */
 222         boolean_t       spa_autoreplace;        /* autoreplace set in open */
 223         int             spa_vdev_locks;         /* locks grabbed */
 224         uint64_t        spa_creation_version;   /* version at pool creation */
 225         uint64_t        spa_prev_software_version; /* See ub_software_version */
 226         uint64_t        spa_feat_for_write_obj; /* required to write to pool */
 227         uint64_t        spa_feat_for_read_obj;  /* required to read from pool */
 228         uint64_t        spa_feat_desc_obj;      /* Feature descriptions */
 229         /*
 230          * spa_refcnt & spa_config_lock must be the last elements
 231          * because refcount_t changes size based on compilation options.
 232          * In order for the MDB module to function correctly, the other
 233          * fields must remain in the same location.
 234          */
 235         spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
 236         refcount_t      spa_refcount;           /* number of opens */
 237 };
 238 
 239 extern const char *spa_config_path;
 240 
 241 #ifdef  __cplusplus
 242 }
 243 #endif
 244 
 245 #endif  /* _SYS_SPA_IMPL_H */