manuals: add rm_work disk space data

(From yocto-docs rev: 8121a02cde6b0149aef441926c5b8e89cb9854df)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/documentation/dev-manual/disk-space.rst b/documentation/dev-manual/disk-space.rst
index 3a5d2b7297..c63591cc7a 100644
--- a/documentation/dev-manual/disk-space.rst
+++ b/documentation/dev-manual/disk-space.rst
@@ -17,6 +17,12 @@ building a recipe once the recipe is built. For more information on
 "rm_work", see the :ref:`ref-classes-rm-work` class in the
 Yocto Project Reference Manual.
 
+When you inherit this class and build a ``core-image-sato`` image for a
+``qemux86-64`` machine from an Ubuntu 22.04 x86-64 system, you end up with a
+final disk usage of 22 Gbytes instead of &MIN_DISK_SPACE; Gbytes. However,
+&MIN_DISK_SPACE_RM_WORK; Gbytes of initial free disk space are still needed to
+create temporary files before they can be deleted.
+
 Purging Duplicate Shared State Cache Files
 ==========================================