By default, the content of the partition is filled by the filesystem
without leaving any unused free space. The --extra-space flag adds
extra space to the filesystem size, not to the partition.
Unused free space after the filesystem can be useful for some cases,
such as encrypting a partition at runtime.
With --extra-partition-space 32M, we ensure that the last 32M of the
partition is unused: this space does not contain filesystem data and
can store the LUKS2 header.
The implementation sets a difference between the partition and
filesystem size:
- With --fixed-size, the extra part space is removed from the
filesystem size.
- Otherwise (with or without --size flag), the extra part space is
added to the partition size.
(From OE-Core rev: 22fd1702aedf40257aa53963b62b5ef1bbd2818a)
Signed-off-by: Pierre-Loup GOSSE <pierre-loup.gosse@smile.fr>
CC: Alexander Kanavin <alex.kanavin@gmail.com>
CC: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
21d98bd960