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(From yocto-docs rev: 8121a02cde6b0149aef441926c5b8e89cb9854df) Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
46 lines
1.7 KiB
ReStructuredText
46 lines
1.7 KiB
ReStructuredText
.. SPDX-License-Identifier: CC-BY-SA-2.0-UK
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Conserving Disk Space
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*********************
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Conserving Disk Space During Builds
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===================================
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To help conserve disk space during builds, you can add the following
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statement to your project's ``local.conf`` configuration file found in
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the :term:`Build Directory`::
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INHERIT += "rm_work"
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Adding this statement deletes the work directory used for
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building a recipe once the recipe is built. For more information on
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"rm_work", see the :ref:`ref-classes-rm-work` class in the
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Yocto Project Reference Manual.
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When you inherit this class and build a ``core-image-sato`` image for a
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``qemux86-64`` machine from an Ubuntu 22.04 x86-64 system, you end up with a
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final disk usage of 22 Gbytes instead of &MIN_DISK_SPACE; Gbytes. However,
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&MIN_DISK_SPACE_RM_WORK; Gbytes of initial free disk space are still needed to
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create temporary files before they can be deleted.
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Purging Duplicate Shared State Cache Files
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==========================================
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After multiple build iterations, the Shared State (sstate) cache can contain
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duplicate cache files for a given package, while only the most recent one
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is likely to be reusable. The following command purges all but the
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newest sstate cache file for each package::
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sstate-cache-management.sh --remove-duplicated --cache-dir=build/sstate-cache
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This command will ask you to confirm the deletions it identifies.
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.. note::
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The duplicated sstate cache files of one package must have the same
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architecture, which means that sstate cache files with multiple
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architectures are not considered as duplicate.
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Run ``sstate-cache-management.sh`` for more details about this script.
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