kernel/fs/zfs/sys/vdev_indirect_births.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * This file and its contents are supplied under the terms of the
   5  * Common Development and Distribution License ("CDDL"), version 1.0.
   6  * You may only use this file in accordance with the terms of version
   7  * 1.0 of the CDDL.
   8  *
   9  * A full copy of the text of the CDDL should have accompanied this
  10  * source.  A copy of the CDDL is also available via the Internet at
  11  * http://www.illumos.org/license/CDDL.
  12  *
  13  * CDDL HEADER END
  14  */
  15
  16 /*
  17  * Copyright (c) 2015 by Delphix. All rights reserved.
  18  */
  19
  20 #ifndef _SYS_VDEV_INDIRECT_BIRTHS_H
  21 #define _SYS_VDEV_INDIRECT_BIRTHS_H
  22
  23 #include <sys/dmu.h>
  24 #include <sys/spa.h>
  25
  26 #ifdef  __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 typedef struct vdev_indirect_birth_entry_phys {
  31         uint64_t vibe_offset;
  32         uint64_t vibe_phys_birth_txg;
  33 } vdev_indirect_birth_entry_phys_t;
  34
  35 typedef struct vdev_indirect_birth_phys {
  36         uint64_t        vib_count; /* count of v_i_b_entry_phys_t's */
  37 } vdev_indirect_birth_phys_t;
  38
  39 typedef struct vdev_indirect_births {
  40         uint64_t        vib_object;
  41
  42         /*
  43          * Each entry indicates that everything up to but not including
  44          * vibe_offset was copied in vibe_phys_birth_txg. Entries are sorted
  45          * by increasing phys_birth, and also by increasing offset. See
  46          * vdev_indirect_births_physbirth for usage.
  47          */
  48         vdev_indirect_birth_entry_phys_t *vib_entries;
  49
  50         objset_t        *vib_objset;
  51
  52         dmu_buf_t       *vib_dbuf;
  53         vdev_indirect_birth_phys_t      *vib_phys;
  54 } vdev_indirect_births_t;
  55
  56 extern vdev_indirect_births_t *vdev_indirect_births_open(objset_t *os,
  57     uint64_t object);
  58 extern void vdev_indirect_births_close(vdev_indirect_births_t *vib);
  59 extern boolean_t vdev_indirect_births_is_open(vdev_indirect_births_t *vib);
  60 extern uint64_t vdev_indirect_births_alloc(objset_t *os, dmu_tx_t *tx);
  61 extern void vdev_indirect_births_free(objset_t *os, uint64_t object,
  62     dmu_tx_t *tx);
  63
  64 extern uint64_t vdev_indirect_births_count(vdev_indirect_births_t *vib);
  65 extern uint64_t vdev_indirect_births_object(vdev_indirect_births_t *vib);
  66
  67 extern void vdev_indirect_births_add_entry(vdev_indirect_births_t *vib,
  68     uint64_t offset, uint64_t txg, dmu_tx_t *tx);
  69
  70 extern uint64_t vdev_indirect_births_physbirth(vdev_indirect_births_t *vib,
  71     uint64_t offset, uint64_t asize);
  72
  73 extern uint64_t vdev_indirect_births_last_entry_txg(
  74     vdev_indirect_births_t *vib);
  75
  76 #ifdef  __cplusplus
  77 }
  78 #endif
  79
  80 #endif  /* _SYS_VDEV_INDIRECT_BIRTHS_H */