[poky] Sharing sstate

[Gary Thomas]

I'd really like to be able to share sstate effectively.  One problem I have with
it is the size - for a build of my system (something similar to core-image-sato
on BeagleBoard), the sstate cache for a build-from-scratch is nearly 5GB!  Not
exactly simple to share across sites.

It seems to me that maybe I don't need to share everything.  For example, the
webkit-gtk package:

$ ls -l sstate-cache/*webkit-gtk*
-rw-rw-r-- 1 gary gary 331221793 Sep 23 16:21 
sstate-cache/sstate-webkit-gtk-armv7a-vfp-neon-amltd-linux-gnueabi-1.5.1+svnr90727-r0-armv7a-vfp-neon-2-4a04fc210c0a565767a2ad9bb11d8322_deploy-ipk.tgz
-rw-rw-r-- 1 gary gary     12740 Sep 23 16:21 
sstate-cache/sstate-webkit-gtk-armv7a-vfp-neon-amltd-linux-gnueabi-1.5.1+svnr90727-r0-armv7a-vfp-neon-2-4a04fc210c0a565767a2ad9bb11d8322_deploy-ipk.tgz.siginfo
-rw-r--r-- 1 gary gary 326376172 Sep 23 16:15 
sstate-cache/sstate-webkit-gtk-armv7a-vfp-neon-amltd-linux-gnueabi-1.5.1+svnr90727-r0-armv7a-vfp-neon-2-67b4ac238844551dd48eed3255ea33d0_populate-sysroot.tgz
-rw-r--r-- 1 gary gary     21652 Sep 23 16:15 
sstate-cache/sstate-webkit-gtk-armv7a-vfp-neon-amltd-linux-gnueabi-1.5.1+svnr90727-r0-armv7a-vfp-neon-2-67b4ac238844551dd48eed3255ea33d0_populate-sysroot.tgz.siginfo
-rw-r--r-- 1 gary gary 665832323 Sep 23 16:19 
sstate-cache/sstate-webkit-gtk-armv7a-vfp-neon-amltd-linux-gnueabi-1.5.1+svnr90727-r0-armv7a-vfp-neon-2-726c31c08826bf24e6db77fdf5f4408b_package.tgz
-rw-r--r-- 1 gary gary     98746 Sep 23 16:19 
sstate-cache/sstate-webkit-gtk-armv7a-vfp-neon-amltd-linux-gnueabi-1.5.1+svnr90727-r0-armv7a-vfp-neon-2-726c31c08826bf24e6db77fdf5f4408b_package.tgz.siginfo
-rw-rw-r-- 1 gary gary      3117 Sep 23 15:38 
sstate-cache/sstate-webkit-gtk-armv7a-vfp-neon-amltd-linux-gnueabi-1.5.1+svnr90727-r0-armv7a-vfp-neon-2-f9267d59a61b218bd6ab76ed55f12e8e_populate-lic.tgz
-rw-rw-r-- 1 gary gary      8359 Sep 23 15:38 
sstate-cache/sstate-webkit-gtk-armv7a-vfp-neon-amltd-linux-gnueabi-1.5.1+svnr90727-r0-armv7a-vfp-neon-2-f9267d59a61b218bd6ab76ed55f12e8e_populate-lic.tgz.siginfo

Would it be possible to only share part of this, maybe the "package" file?
It seems to me that this could make the needed (shared) cache much smaller...

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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