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Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

zfs-hold.8 (3120B)

    

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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 June 30, 2019
  33. .Dt ZFS-HOLD 8
  34. .Os
  35. .
  36. .Sh NAME
  37. .Nm zfs-hold
  38. .Nd hold ZFS snapshots to prevent their removal
  39. .Sh SYNOPSIS
  40. .Nm zfs
  41. .Cm hold
  42. .Op Fl r
  43. .Ar tag Ar snapshot Ns …
  44. .Nm zfs
  45. .Cm holds
  46. .Op Fl rHp
  47. .Ar snapshot Ns …
  48. .Nm zfs
  49. .Cm release
  50. .Op Fl r
  51. .Ar tag Ar snapshot Ns …
  52. .
  53. .Sh DESCRIPTION
  54. .Bl -tag -width ""
  55. .It Xo
  56. .Nm zfs
  57. .Cm hold
  58. .Op Fl r
  59. .Ar tag Ar snapshot Ns …
  60. .Xc
  61. Adds a single reference, named with the
  62. .Ar tag
  63. argument, to the specified snapshots.
  64. Each snapshot has its own tag namespace, and tags must be unique within that
  65. space.
  66. .Pp
  67. If a hold exists on a snapshot, attempts to destroy that snapshot by using the
  68. .Nm zfs Cm destroy
  69. command return
  70. .Sy EBUSY .
  71. .Bl -tag -width "-r"
  72. .It Fl r
  73. Specifies that a hold with the given tag is applied recursively to the snapshots
  74. of all descendent file systems.
  75. .El
  76. .It Xo
  77. .Nm zfs
  78. .Cm holds
  79. .Op Fl rHp
  80. .Ar snapshot Ns …
  81. .Xc
  82. Lists all existing user references for the given snapshot or snapshots.
  83. .Bl -tag -width "-r"
  84. .It Fl r
  85. Lists the holds that are set on the named descendent snapshots, in addition to
  86. listing the holds on the named snapshot.
  87. .It Fl H
  88. Do not print headers, use tab-delimited output.
  89. .It Fl p
  90. Prints holds timestamps as unix epoch timestamps.
  91. .El
  92. .It Xo
  93. .Nm zfs
  94. .Cm release
  95. .Op Fl r
  96. .Ar tag Ar snapshot Ns …
  97. .Xc
  98. Removes a single reference, named with the
  99. .Ar tag
  100. argument, from the specified snapshot or snapshots.
  101. The tag must already exist for each snapshot.
  102. If a hold exists on a snapshot, attempts to destroy that snapshot by using the
  103. .Nm zfs Cm destroy
  104. command return
  105. .Sy EBUSY .
  106. .Bl -tag -width "-r"
  107. .It Fl r
  108. Recursively releases a hold with the given tag on the snapshots of all
  109. descendent file systems.
  110. .El
  111. .El
  112. .
  113. .Sh SEE ALSO
  114. .Xr zfs-destroy 8