4101 metaslab_debug should allow for fine-grained control
4102 space_maps should store more information about themselves
4103 space map object blocksize should be increased
4104 ::spa_space no longer works
4105 removing a mirrored log device results in a leaked object
4106 asynchronously load metaslab
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Sebastien Roy <seb@delphix.com>

          --- old/usr/src/common/zfs/zfeature_common.h
          +++ new/usr/src/common/zfs/zfeature_common.h

   1    1  /*
   2    2   * CDDL HEADER START
   3    3   *
   4    4   * The contents of this file are subject to the terms of the
   5    5   * Common Development and Distribution License (the "License").
   6    6   * You may not use this file except in compliance with the License.
   7    7   *
   8    8   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9    9   * or http://www.opensolaris.org/os/licensing.
  10   10   * See the License for the specific language governing permissions
  11   11   * and limitations under the License.
  12   12   *

  13   13   * When distributing Covered Code, include this CDDL HEADER in each
  14   14   * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15   15   * If applicable, add the following below this CDDL HEADER, with the
  16   16   * fields enclosed by brackets "[]" replaced with your own identifying
  17   17   * information: Portions Copyright [yyyy] [name of copyright owner]
  18   18   *
  19   19   * CDDL HEADER END
  20   20   */
  21   21  
  22   22  /*
  23      - * Copyright (c) 2012 by Delphix. All rights reserved.
       23 + * Copyright (c) 2013 by Delphix. All rights reserved.
  24   24   * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
  25   25   * Copyright (c) 2013, Joyent, Inc. All rights reserved.
  26   26   */
  27   27  
  28   28  #ifndef _ZFEATURE_COMMON_H
  29   29  #define _ZFEATURE_COMMON_H
  30   30  
  31   31  #include <sys/fs/zfs.h>
  32   32  #include <sys/inttypes.h>
  33   33  #include <sys/types.h>

  34   34  
  35   35  #ifdef  __cplusplus
  36   36  extern "C" {
  37   37  #endif
  38   38  
  39   39  struct zfeature_info;
  40   40  
  41   41  typedef struct zfeature_info {
  42   42          const char *fi_uname;   /* User-facing feature name */
  43   43          const char *fi_guid;    /* On-disk feature identifier */
  44   44          const char *fi_desc;    /* Feature description */
  45   45          boolean_t fi_can_readonly; /* Can open pool readonly w/o support? */
  46   46          boolean_t fi_mos;       /* Is the feature necessary to read the MOS? */
  47   47          struct zfeature_info **fi_depends; /* array; null terminated */
  48   48  } zfeature_info_t;

  49   49  
  50   50  typedef int (zfeature_func_t)(zfeature_info_t *fi, void *arg);
  51   51  
  52   52  #define ZFS_FEATURE_DEBUG
  53   53  
  54   54  enum spa_feature {
  55   55          SPA_FEATURE_ASYNC_DESTROY,
  56   56          SPA_FEATURE_EMPTY_BPOBJ,
  57   57          SPA_FEATURE_LZ4_COMPRESS,
  58   58          SPA_FEATURE_MULTI_VDEV_CRASH_DUMP,
       59 +        SPA_FEATURE_SPACEMAP_HISTOGRAM,
  59   60          SPA_FEATURES
  60   61  } spa_feature_t;
  61   62  
  62   63  extern zfeature_info_t spa_feature_table[SPA_FEATURES];
  63   64  
  64   65  extern boolean_t zfeature_is_valid_guid(const char *);
  65   66  
  66   67  extern boolean_t zfeature_is_supported(const char *);
  67   68  extern int zfeature_lookup_guid(const char *, zfeature_info_t **res);
  68   69  extern int zfeature_lookup_name(const char *, zfeature_info_t **res);
  69   70  
  70   71  extern void zpool_feature_init(void);
  71   72  
  72   73  #ifdef  __cplusplus
  73   74  }
  74   75  #endif
  75   76  
  76   77  #endif  /* _ZFEATURE_COMMON_H */
    

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