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* On base system upgrade, move extra packages to base.
* Packages to watch out for (new versions often cause upgrade issues):
- systemd
- qemu-system-x86
- linux-image-amd64 & btrfs-progs
- g++
If some of them are very recent (and thus likely to still have issues)
in unstable, consider using testing. See Debian Changelog for release
dates.
Check the current source (unstable/testing) and update if necessary.
* Examining init changes:
- Get the latest initramfs-tools-core and udev packages.
- Extract /usr/share/initramfs-tools/{scripts,init} into new directory.
- Compare:
diff -urw <old> <new>
We currently only use init plus udev in scripts/init-{top,bottom} (but
the latter may use functions form other files).
* Grep for 'bug' and @@ in init and bootstrap scripts, see if any bugs have
been fixed and corresponding workarounds can be removed.
For some may make sense to do a round of cleanups after successful bootstrap
not to conflate failures.
* Upgrade to latest debootstrap and debian-archive-keyring from unstable
(or testing). Other required host packages:
uuid-runtime (uuidgen)
systemd-container (systemd-nspawn)
* Note: as of latest attempt, bootstrap over https was still broken.
* Bootstrap:
./bootstrap 2>&1 | tee bootstrap-X.Y.log
NOTE: tee does not play well with bash prompt (used for troubleshooting).
NOTE: if during boostrap you need to but unable to delete an intermediate
btrfs submodules, then it most likely has nested submodules (see nspawn()
in bootstrap).
NOTE: to kill nspawn container, press Ctrl-]]].
Save the log for later comparison (might have to redo a from-stage-1
bootstrap to get the complete log).
* Compare sizes to previous version for any abnormalities (if a lot larger,
check if GCC executables are stripped).
* After deployment, test VM upload/removal scripts (there are often issues
after upgrading to new btrfs-progs).
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