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ref-manual: add previous overlayfs-etc variables

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These were supported in releases prior to 4.1.

(From yocto-docs rev: 86f367fc9946904b5056fb86fb2cc339a0f96b0a)

Signed-off-by: Paul Eggleton <paul.eggleton@microsoft.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Paul Eggleton
2022-10-10 11:28:20 +13:00
committed by Richard Purdie
parent 4ce28144c5
commit d73883dfef
1 changed files with 38 additions and 0 deletions
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38
documentation/ref-manual/variables.rst
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@@ -5187,6 +5187,44 @@ system and gives an overview of their function and contents.
default by setting the variable in a custom distribution
configuration file.
:term:`OVERLAYFS_ETC_DEVICE`
When the :ref:`overlayfs-etc <ref-classes-overlayfs-etc>` class is
inherited, specifies the device to be mounted for the read/write
layer of ``/etc``. There is no default, so you must set this if you
wish to enable :ref:`overlayfs-etc <ref-classes-overlayfs-etc>`, for
example, assuming ``/dev/mmcblk0p2`` was the desired device::
OVERLAYFS_ETC_DEVICE = "/dev/mmcblk0p2"
:term:`OVERLAYFS_ETC_FSTYPE`
When the :ref:`overlayfs-etc <ref-classes-overlayfs-etc>` class is
inherited, specifies the file system type for the read/write
layer of ``/etc``. There is no default, so you must set this if you
wish to enable :ref:`overlayfs-etc <ref-classes-overlayfs-etc>`,
for example, assuming the file system is ext4::
OVERLAYFS_ETC_FSTYPE = "ext4"
:term:`OVERLAYFS_ETC_MOUNT_OPTIONS`
When the :ref:`overlayfs-etc <ref-classes-overlayfs-etc>` class is
inherited, specifies the mount options for the read-write layer.
The default value is "defaults".
:term:`OVERLAYFS_ETC_MOUNT_POINT`
When the :ref:`overlayfs-etc <ref-classes-overlayfs-etc>` class is
inherited, specifies the parent mount path for the filesystem layers.
There is no default, so you must set this if you wish to enable
:ref:`overlayfs-etc <ref-classes-overlayfs-etc>`, for example if
the desired path is "/data"::
OVERLAYFS_ETC_MOUNT_POINT = "/data"
:term:`OVERLAYFS_ETC_USE_ORIG_INIT_NAME`
When the :ref:`overlayfs-etc <ref-classes-overlayfs-etc>` class is
inherited, controls how the generated init will be named. For more
information, see the :ref:`overlayfs-etc <ref-classes-overlayfs-etc>`
class documentation. The default value is "1".
:term:`OVERRIDES`
A colon-separated list of overrides that currently apply. Overrides
are a BitBake mechanism that allows variables to be selectively