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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-unjail.8 (3651B)

    

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  21. .\" Copyright (c) 2009 Sun Microsystems, Inc. All Rights Reserved.
  22. .\" Copyright 2011 Joshua M. Clulow <josh@sysmgr.org>
  23. .\" Copyright (c) 2011, 2019 by Delphix. All rights reserved.
  24. .\" Copyright (c) 2011, Pawel Jakub Dawidek <pjd@FreeBSD.org>
  25. .\" Copyright (c) 2012, Glen Barber <gjb@FreeBSD.org>
  26. .\" Copyright (c) 2012, Bryan Drewery <bdrewery@FreeBSD.org>
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  28. .\" Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
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  30. .\" Copyright (c) 2014 by Adam Stevko. All rights reserved.
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  34. .\" Copyright (c) 2016 Nexenta Systems, Inc. All Rights Reserved.
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  39. .Dd May 27, 2021
  40. .Dt ZFS-JAIL 8
  41. .Os
  42. .
  43. .Sh NAME
  44. .Nm zfs-jail
  45. .Nd attach or detach ZFS filesystem from FreeBSD jail
  46. .Sh SYNOPSIS
  47. .Nm zfs Cm jail
  48. .Ar jailid Ns | Ns Ar jailname
  49. .Ar filesystem
  50. .Nm zfs Cm unjail
  51. .Ar jailid Ns | Ns Ar jailname
  52. .Ar filesystem
  53. .
  54. .Sh DESCRIPTION
  55. .Bl -tag -width ""
  56. .It Xo
  57. .Nm zfs
  58. .Cm jail
  59. .Ar jailid Ns | Ns Ar jailname
  60. .Ar filesystem
  61. .Xc
  62. Attach the specified
  63. .Ar filesystem
  64. to the jail identified by JID
  65. .Ar jailid
  66. or name
  67. .Ar jailname .
  68. From now on this file system tree can be managed from within a jail if the
  69. .Sy jailed
  70. property has been set.
  71. To use this functionality, the jail needs the
  72. .Sy allow.mount
  73. and
  74. .Sy allow.mount.zfs
  75. parameters set to
  76. .Sy 1
  77. and the
  78. .Sy enforce_statfs
  79. parameter set to a value lower than
  80. .Sy 2 .
  81. .Pp
  82. You cannot attach a jailed dataset's children to another jail.
  83. You can also not attach the root file system
  84. of the jail or any dataset which needs to be mounted before the zfs rc script
  85. is run inside the jail, as it would be attached unmounted until it is
  86. mounted from the rc script inside the jail.
  87. .Pp
  88. To allow management of the dataset from within a jail, the
  89. .Sy jailed
  90. property has to be set and the jail needs access to the
  91. .Pa /dev/zfs
  92. device.
  93. The
  94. .Sy quota
  95. property cannot be changed from within a jail.
  96. .Pp
  97. After a dataset is attached to a jail and the
  98. .Sy jailed
  99. property is set, a jailed file system cannot be mounted outside the jail,
  100. since the jail administrator might have set the mount point to an unacceptable
  101. value.
  102. .Pp
  103. See
  104. .Xr jail 8
  105. for more information on managing jails.
  106. Jails are a
  107. .Fx
  108. feature and are not relevant on other platforms.
  109. .It Xo
  110. .Nm zfs
  111. .Cm unjail
  112. .Ar jailid Ns | Ns Ar jailname
  113. .Ar filesystem
  114. .Xc
  115. Detaches the specified
  116. .Ar filesystem
  117. from the jail identified by JID
  118. .Ar jailid
  119. or name
  120. .Ar jailname .
  121. .El
  122. .Sh SEE ALSO
  123. .Xr zfsprops 7 ,
  124. .Xr jail 8