[PATCH v2 0/1] sstate: do not keep intermediate sstate files

[Uladzimir Bely <ubely@ilbers.de>]

Sstate is quite demanding for disk space. And it often causes failures
in CI, related to 'out-of-space'.

This patchset minimizes space usage by intermediate state files by
removing them:
- after sstate-cache populated: with separate task in task queue
- after sstate-cache unpacked: by direct call of this task

Some results shown below for three different cases:

- sstate disabled;
- sstate enabled;
- sstate enabled + cleanup patch.

bullseye-arm64 cross build with full IMAGE_INSTALL list:

$ sudo du -sh build-*
5,7G    build-nosstate
12G     build-sstate
7,6G    build-sstate-cleanup

bullseye-arm64 cross build with empty IMAGE_INSTALL list:

$ sudo du -sh build-*
2,5G    build-nosstate
5,3G    build-sstate
3,4G    build-sstate-cleanup

bullseye-amd64 native build with empty IMAGE_INSTALL list:

$ sudo du -sh build-*
3,2G    build-nosstate
6,4G    build-sstate
4,2G    build-sstate-cleanup


Changes since v1:
- patchset renamed from "sstate: compress rootfs sstate files";
- sstate intermediate files compression replaced by removing;
- dpkg intermediate files are also handled.

Uladzimir Bely (1):
  sstate: do not keep intermediate sstate files

 meta/classes/dpkg-base.bbclass                      | 7 +++++++
 meta/classes/rootfs.bbclass                         | 7 +++++++
 meta/recipes-core/isar-bootstrap/isar-bootstrap.inc | 7 +++++++
 3 files changed, 21 insertions(+)

-- 
2.20.1