OpenZFS 8491 - uberblock on-disk padding to reserve space for smoothly merging zpool...

[zfs] / include / sys / spa_impl.h

diff --git a/include/sys/spa_impl.h b/include/sys/spa_impl.h
index 0bb6dccdc2f9d22767f2761da1f5ed13afffa901..06de244218f3ecd1665e063d62e5746a41ecee32 100644 (file)
--- a/include/sys/spa_impl.h
+++ b/include/sys/spa_impl.h
@@ -23,6 +23,9 @@
  * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
+ * Copyright 2013 Saso Kiselkov. All rights reserved.
+ * Copyright (c) 2016 Actifio, Inc. All rights reserved.
+ * Copyright (c) 2017 Datto Inc.
  */
 
 #ifndef _SYS_SPA_IMPL_H
@@ -115,11 +118,18 @@ typedef struct spa_taskqs {
        taskq_t **stqs_taskq;
 } spa_taskqs_t;
 
+typedef enum spa_all_vdev_zap_action {
+       AVZ_ACTION_NONE = 0,
+       AVZ_ACTION_DESTROY,     /* Destroy all per-vdev ZAPs and the AVZ. */
+       AVZ_ACTION_REBUILD,     /* Populate the new AVZ, see spa_avz_rebuild */
+       AVZ_ACTION_INITIALIZE
+} spa_avz_action_t;
+
 struct spa {
        /*
         * Fields protected by spa_namespace_lock.
         */
-       char            spa_name[MAXNAMELEN];   /* pool name */
+       char            spa_name[ZFS_MAX_DATASET_NAME_LEN];     /* pool name */
        char            *spa_comment;           /* comment */
        avl_node_t      spa_avl;                /* node in spa_namespace_avl */
        nvlist_t        *spa_config;            /* last synced config */
@@ -157,6 +167,8 @@ struct spa {
        uint64_t        spa_last_synced_guid;   /* last synced guid */
        list_t          spa_config_dirty_list;  /* vdevs with dirty config */
        list_t          spa_state_dirty_list;   /* vdevs with dirty state */
+       kmutex_t        spa_alloc_lock;
+       avl_tree_t      spa_alloc_tree;
        spa_aux_vdev_t  spa_spares;             /* hot spares */
        spa_aux_vdev_t  spa_l2cache;            /* L2ARC cache devices */
        nvlist_t        *spa_label_features;    /* Features for reading MOS */
@@ -165,6 +177,10 @@ struct spa {
        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 */
+       zio_cksum_salt_t spa_cksum_salt;        /* secret salt for cksum */
+       /* checksum context templates */
+       kmutex_t        spa_cksum_tmpls_lock;
+       void            *spa_cksum_tmpls[ZIO_CHECKSUM_FUNCTIONS];
        uberblock_t     spa_ubsync;             /* last synced uberblock */
        uberblock_t     spa_uberblock;          /* current uberblock */
        boolean_t       spa_extreme_rewind;     /* rewind past deferred frees */
@@ -178,6 +194,8 @@ struct spa {
        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_scrub_pause; /* scrub pause time */
+       uint64_t        spa_scan_pass_scrub_spent_paused; /* total paused */
        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 */
@@ -225,6 +243,7 @@ struct spa {
        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_dspace;       /* Cache get_dedup_dspace() */
        uint64_t        spa_dedup_ditto;        /* dedup ditto threshold */
        uint64_t        spa_dedup_checksum;     /* default dedup checksum */
        uint64_t        spa_dspace;             /* dspace in normal class */
@@ -250,9 +269,14 @@ struct spa {
        uint64_t        spa_deadman_calls;      /* number of deadman calls */
        hrtime_t        spa_sync_starttime;     /* starting time of spa_sync */
        uint64_t        spa_deadman_synctime;   /* deadman expiration timer */
+       uint64_t        spa_all_vdev_zaps;      /* ZAP of per-vd ZAP obj #s */
+       spa_avz_action_t        spa_avz_action; /* destroy/rebuild AVZ? */
        uint64_t        spa_errata;             /* errata issues detected */
        spa_stats_t     spa_stats;              /* assorted spa statistics */
        hrtime_t        spa_ccw_fail_time;      /* Conf cache write fail time */
+       taskq_t         *spa_zvol_taskq;        /* Taskq for minor management */
+       uint64_t        spa_multihost;          /* multihost aware (mmp) */
+       mmp_thread_t    spa_mmp;                /* multihost mmp thread */
 
        /*
         * spa_refcount & spa_config_lock must be the last elements
@@ -262,6 +286,8 @@ struct spa {
         */
        spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */
        refcount_t      spa_refcount;           /* number of opens */
+
+       taskq_t         *spa_upgrade_taskq;     /* taskq for upgrade jobs */
 };
 
 extern char *spa_config_path;