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Incremental rpm image generation

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Incremental rpm image generation, the rootfs would be totally removed and
re-created in the second generation by default, but with
INC_RPM_IMAGE_GEN = "1", the rpm based rootfs would be kept, and will do
update(remove/add some pkgs) on it.

NOTE: This is not suggested when you want to create a productive rootfs

For example:
  1) Add the follow config option to a conf file:
     INC_RPM_IMAGE_GEN = "1"

  2) bitbake core-image-sato
     modify a package
     bitbake core-image-sato

The rootfs would not be totally removed and re-created in the second
generation, it would be simply updated based on the "package".

Implatation:
1) Figure out the pkg which need to be removed or re-installed, then use
'rpm -e to remove the old one. Use the rpm's BUILDTIME to determine
which pkg has been rebuilt.

2) Figure out the pkg which is newly added, and use 'rpm -U' to install
it.

This only for the rpm based rootfs, the deb and ipk based rootfs would
be done later.

[YOCTO #1651]

(From OE-Core rev: 575ba3c9e153a1d8ac228a99a03ca2df5fbca151)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Robert Yang
2011-12-28 17:16:11 +08:00
committed by Richard Purdie
parent 489cde8eb0
commit 9d1823b2a0
3 changed files with 77 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta/classes/image.bbclass
+9 -2
View File
@@ -134,15 +134,22 @@ do_rootfs[umask] = 022
fakeroot do_rootfs () {
#set -x
rm -rf ${IMAGE_ROOTFS}
# When use the rpm incremental image generation, don't remove the rootfs
if [ "${INC_RPM_IMAGE_GEN}" != "1" -o "${IMAGE_PKGTYPE}" != "rpm" ]; then
rm -rf ${IMAGE_ROOTFS}
fi
rm -rf ${MULTILIB_TEMP_ROOTFS}
mkdir -p ${IMAGE_ROOTFS}
mkdir -p ${DEPLOY_DIR_IMAGE}
cp ${COREBASE}/meta/files/deploydir_readme.txt ${DEPLOY_DIR_IMAGE}/README_-_DO_NOT_DELETE_FILES_IN_THIS_DIRECTORY.txt
if [ "${USE_DEVFS}" != "1" ]; then
# If "${IMAGE_ROOTFS}/dev" exists, then the device had been made by
# the previous build
if [ "${USE_DEVFS}" != "1" -a ! -r "${IMAGE_ROOTFS}/dev" ]; then
for devtable in ${@get_devtable_list(d)}; do
# Always return ture since there maybe already one when use the
# incremental image generation
makedevs -r ${IMAGE_ROOTFS} -D $devtable
done
fi