docs: add `bind-recursive` mount option
Follow-up to PR 4316 Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
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@ -394,7 +394,7 @@ volumes in a service:
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<td>
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<p>The Engine mounts binds and volumes <tt>read-write</tt> unless <tt>readonly</tt> option
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is given when mounting the bind or volume. Note that setting <tt>readonly</tt> for a
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bind-mount does not make its submounts <tt>readonly</tt> on the current Linux implementation. See also <tt>bind-nonrecursive</tt>.</p>
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bind-mount may not make its submounts <tt>readonly</tt> depending on the kernel version. See also <tt>bind-recursive</tt>.</p>
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<ul>
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<li><tt>true</tt> or <tt>1</tt> or no value: Mounts the bind or volume read-only.</li>
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<li><tt>false</tt> or <tt>0</tt>: Mounts the bind or volume read-write.</li>
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@ -432,17 +432,40 @@ The following options can only be used for bind mounts (`type=bind`):
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</td>
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</tr>
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<tr>
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<td><b>bind-nonrecursive</b></td>
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<td><b>bind-recursive</b></td>
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<td>
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By default, submounts are recursively bind-mounted as well. However, this behavior can be confusing when a
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bind mount is configured with <tt>readonly</tt> option, because submounts are not mounted as read-only.
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Set <tt>bind-nonrecursive</tt> to disable recursive bind-mount.<br />
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bind mount is configured with <tt>readonly</tt> option, because submounts may not be mounted as read-only,
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depending on the kernel version.
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Set <tt>bind-recursive</tt> to control the behavior of the recursive bind-mount.<br />
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<br />
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A value is one of:<br />
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<br />
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<ul>
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<li><<tt>enabled</tt>, <tt>true</tt> or <tt>1</tt>: Enables recursive bind-mount.
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Read-only mounts are made recursively read-only if kernel is v5.12 or later.
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Otherwise they are not made recursively read-only.</li>
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<li><<tt>disabled</tt>, <tt>false</tt> or <tt>0</tt>: Disables recursive bind-mount.</li>
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<li><<tt>writable</tt>: Enables recursive bind-mount.
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Read-only mounts are not made recursively read-only.</li>
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<li><<tt>readonly</tt>: Enables recursive bind-mount.
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Read-only mounts are made recursively read-only if kernel is v5.12 or later.
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Otherwise the Engine raises an error.</li>
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</ul>
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When the option is not specified, the default behavior correponds to setting <tt>enabled</tt>.
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</td>
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</tr>
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<tr>
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<td><b>bind-nonrecursive</b></td>
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<td>
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<tt>bind-nonrecursive</tt> is deprecated since Docker Engine v25.0.
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Use <tt>bind-recursive</tt>instead.<br />
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<br />
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A value is optional:<br />
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<br />
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<ul>
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<li><tt>true</tt> or <tt>1</tt>: Disables recursive bind-mount.</li>
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<li><tt>false</tt> or <tt>0</tt>: Default if you do not provide a value. Enables recursive bind-mount.</li>
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<li><tt>true</tt> or <tt>1</tt>: Equivalent to <tt>bind-recursive=disabled</tt>.</li>
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<li><tt>false</tt> or <tt>0</tt>: Equivalent to <tt>bind-recursive=enabled</tt>.</li>
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</ul>
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</td>
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</tr>
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@ -467,16 +467,20 @@ according to RFC4862.
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* `dst`, `destination`, `target`: mount destination spec.
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* `ro`, `readonly`: `true` or `false` (default).
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**Note**: setting `readonly` for a bind mount does not make its submounts
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read-only on the current Linux implementation. See also `bind-nonrecursive`.
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**Note**: setting `readonly` for a bind mount may not make its submounts
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read-only depending on the kernel version. See also `bind-recursive`.
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Options specific to `bind`:
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* `bind-propagation`: `shared`, `slave`, `private`, `rshared`, `rslave`, or `rprivate`(default). See also `mount(2)`.
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* `consistency`: `consistent`(default), `cached`, or `delegated`. Currently, only effective for Docker for Mac.
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* `bind-nonrecursive`: `true` or `false` (default). If set to `true`,
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submounts are not recursively bind-mounted. This option is useful for
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`readonly` bind mount.
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* `bind-recursive`: `enabled` (default), `disabled`, `writable`, or `readonly`:
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If set to `enabled`, submounts are recursively bind-mounted and attempted to be made recursively read-only.
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If set to `disabled`, submounts are not recursively bind-mounted.
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If set to `writable`, submounts are recursively bind-mounted but not made recursively read-only.
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If set to `readonly`, submounts are recursively bind-mounted and forcibly made recursively read-only.
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* `bind-nonrecursive` (Deprecated): `true` or `false` (default). Setting `true` equates to `bind-recursive=disabled`.
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Setting `false` equates to `bind-recursive=enabled`.
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Options specific to `volume`:
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