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>

*** 18,28 ****
   *
   * CDDL HEADER END
   */
  /*
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
!  * Copyright (c) 2011 by Delphix. All rights reserved.
   * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
   */
  
  #ifndef _SYS_SPA_H
  #define _SYS_SPA_H
--- 18,28 ----
   *
   * CDDL HEADER END
   */
  /*
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
!  * Copyright (c) 2012 by Delphix. All rights reserved.
   * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
   */
  
  #ifndef _SYS_SPA_H
  #define _SYS_SPA_H
*** 92,102 ****
  #define SPA_BLOCKSIZES          (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)
  
  /*
   * Size of block to hold the configuration data (a packed nvlist)
   */
! #define SPA_CONFIG_BLOCKSIZE    (1 << 14)
  
  /*
   * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
   * The ASIZE encoding should be at least 64 times larger (6 more bits)
   * to support up to 4-way RAID-Z mirror mode with worst-case gang block
--- 92,102 ----
  #define SPA_BLOCKSIZES          (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)
  
  /*
   * Size of block to hold the configuration data (a packed nvlist)
   */
! #define SPA_CONFIG_BLOCKSIZE    (1ULL << 14)
  
  /*
   * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
   * The ASIZE encoding should be at least 64 times larger (6 more bits)
   * to support up to 4-way RAID-Z mirror mode with worst-case gang block
*** 260,270 ****
  #define BP_GET_ASIZE(bp)        \
          (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
                  DVA_GET_ASIZE(&(bp)->blk_dva[2]))
  
  #define BP_GET_UCSIZE(bp) \
!         ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \
          BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp))
  
  #define BP_GET_NDVAS(bp)        \
          (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
          !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
--- 260,270 ----
  #define BP_GET_ASIZE(bp)        \
          (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
                  DVA_GET_ASIZE(&(bp)->blk_dva[2]))
  
  #define BP_GET_UCSIZE(bp) \
!         ((BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp))) ? \
          BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp))
  
  #define BP_GET_NDVAS(bp)        \
          (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
          !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
*** 401,412 ****
  }
  
  #include <sys/dmu.h>
  
  #define BP_GET_BUFC_TYPE(bp)                                            \
!         (((BP_GET_LEVEL(bp) > 0) || (dmu_ot[BP_GET_TYPE(bp)].ot_metadata)) ? \
!         ARC_BUFC_METADATA : ARC_BUFC_DATA);
  
  typedef enum spa_import_type {
          SPA_IMPORT_EXISTING,
          SPA_IMPORT_ASSEMBLE
  } spa_import_type_t;
--- 401,412 ----
  }
  
  #include <sys/dmu.h>
  
  #define BP_GET_BUFC_TYPE(bp)                                            \
!         (((BP_GET_LEVEL(bp) > 0) || (DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))) ? \
!         ARC_BUFC_METADATA : ARC_BUFC_DATA)
  
  typedef enum spa_import_type {
          SPA_IMPORT_EXISTING,
          SPA_IMPORT_ASSEMBLE
  } spa_import_type_t;
*** 413,424 ****
  
  /* state manipulation functions */
  extern int spa_open(const char *pool, spa_t **, void *tag);
  extern int spa_open_rewind(const char *pool, spa_t **, void *tag,
      nvlist_t *policy, nvlist_t **config);
! extern int spa_get_stats(const char *pool, nvlist_t **config,
!     char *altroot, size_t buflen);
  extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
      const char *history_str, nvlist_t *zplprops);
  extern int spa_import_rootpool(char *devpath, char *devid);
  extern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props,
      uint64_t flags);
--- 413,424 ----
  
  /* state manipulation functions */
  extern int spa_open(const char *pool, spa_t **, void *tag);
  extern int spa_open_rewind(const char *pool, spa_t **, void *tag,
      nvlist_t *policy, nvlist_t **config);
! extern int spa_get_stats(const char *pool, nvlist_t **config, char *altroot,
!     size_t buflen);
  extern int spa_create(const char *pool, nvlist_t *config, nvlist_t *props,
      const char *history_str, nvlist_t *zplprops);
  extern int spa_import_rootpool(char *devpath, char *devid);
  extern int spa_import(const char *pool, nvlist_t *config, nvlist_t *props,
      uint64_t flags);
*** 571,580 ****
--- 571,581 ----
  extern void spa_claim_notify(zio_t *zio);
  
  /* Accessor functions */
  extern boolean_t spa_shutting_down(spa_t *spa);
  extern struct dsl_pool *spa_get_dsl(spa_t *spa);
+ extern boolean_t spa_is_initializing(spa_t *spa);
  extern blkptr_t *spa_get_rootblkptr(spa_t *spa);
  extern void spa_set_rootblkptr(spa_t *spa, const blkptr_t *bp);
  extern void spa_altroot(spa_t *, char *, size_t);
  extern int spa_sync_pass(spa_t *spa);
  extern char *spa_name(spa_t *spa);
*** 602,611 ****
--- 603,614 ----
  extern uint64_t spa_bootfs(spa_t *spa);
  extern uint64_t spa_delegation(spa_t *spa);
  extern objset_t *spa_meta_objset(spa_t *spa);
  
  /* Miscellaneous support routines */
+ extern void spa_activate_mos_feature(spa_t *spa, const char *feature);
+ extern void spa_deactivate_mos_feature(spa_t *spa, const char *feature);
  extern int spa_rename(const char *oldname, const char *newname);
  extern spa_t *spa_by_guid(uint64_t pool_guid, uint64_t device_guid);
  extern boolean_t spa_guid_exists(uint64_t pool_guid, uint64_t device_guid);
  extern char *spa_strdup(const char *);
  extern void spa_strfree(char *);