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zfs-promote.8 (3316B)

    

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  21. .\" Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved.
  22. .\" Copyright 2011 Joshua M. Clulow <josh@sysmgr.org>
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  32. .Dd March 16, 2022
  33. .Dt ZFS-PROMOTE 8
  34. .Os
  35. .
  36. .Sh NAME
  37. .Nm zfs-promote
  38. .Nd promote clone dataset to no longer depend on origin snapshot
  39. .Sh SYNOPSIS
  40. .Nm zfs
  41. .Cm promote
  42. .Ar clone
  43. .
  44. .Sh DESCRIPTION
  45. The
  46. .Nm zfs Cm promote
  47. command makes it possible to destroy the dataset that the clone was created
  48. from.
  49. The clone parent-child dependency relationship is reversed, so that the origin
  50. dataset becomes a clone of the specified dataset.
  51. .Pp
  52. The snapshot that was cloned, and any snapshots previous to this snapshot, are
  53. now owned by the promoted clone.
  54. The space they use moves from the origin dataset to the promoted clone, so
  55. enough space must be available to accommodate these snapshots.
  56. No new space is consumed by this operation, but the space accounting is
  57. adjusted.
  58. The promoted clone must not have any conflicting snapshot names of its own.
  59. The
  60. .Nm zfs Cm rename
  61. subcommand can be used to rename any conflicting snapshots.
  62. .
  63. .Sh EXAMPLES
  64. .\" These are, respectively, examples 10 from zfs.8
  65. .\" Make sure to update them bidirectionally
  66. .Ss Example 1 : No Promoting a ZFS Clone
  67. The following commands illustrate how to test out changes to a file system, and
  68. then replace the original file system with the changed one, using clones, clone
  69. promotion, and renaming:
  70. .Bd -literal -compact -offset Ds
  71. .No # Nm zfs Cm create Ar pool/project/production
  72.   populate /pool/project/production with data
  73. .No # Nm zfs Cm snapshot Ar pool/project/production Ns @ Ns Ar today
  74. .No # Nm zfs Cm clone Ar pool/project/production@today pool/project/beta
  75.   make changes to /pool/project/beta and test them
  76. .No # Nm zfs Cm promote Ar pool/project/beta
  77. .No # Nm zfs Cm rename Ar pool/project/production pool/project/legacy
  78. .No # Nm zfs Cm rename Ar pool/project/beta pool/project/production
  79.   once the legacy version is no longer needed, it can be destroyed
  80. .No # Nm zfs Cm destroy Ar pool/project/legacy
  81. .Ed
  82. .
  83. .Sh SEE ALSO
  84. .Xr zfs-clone 8 ,
  85. .Xr zfs-rename 8