| .. SPDX-License-Identifier: CC-BY-SA-2.0-UK |
| |
| Conserving Disk Space |
| ********************* |
| |
| Conserving Disk Space During Builds |
| =================================== |
| |
| To help conserve disk space during builds, you can add the following |
| statement to your project's ``local.conf`` configuration file found in |
| the :term:`Build Directory`:: |
| |
| INHERIT += "rm_work" |
| |
| Adding this statement deletes the work directory used for |
| 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 |
| ========================================== |
| |
| After multiple build iterations, the Shared State (sstate) cache can contain |
| duplicate cache files for a given package, while only the most recent one |
| is likely to be reusable. The following command purges all but the |
| newest sstate cache file for each package:: |
| |
| sstate-cache-management.sh --remove-duplicated --cache-dir=build/sstate-cache |
| |
| This command will ask you to confirm the deletions it identifies. |
| |
| .. note:: |
| |
| The duplicated sstate cache files of one package must have the same |
| architecture, which means that sstate cache files with multiple |
| architectures are not considered as duplicate. |
| |
| Run ``sstate-cache-management.sh`` for more details about this script. |
| |