- Save changes to /etc/apt/sources.list as a different file.
- When launching the dist upgrade process via systemd-run, use bind mounting to
ensure that the newly created sources file is treated as the original
/etc/apt/sources.list.
- If the process completes successfully, rename the new file to the original
sources.list. If the process terminates abruptly or machine reboots,
sources.list will remain unchanged. This will also the dist upgrade process to
be restarted (and hopefully continued).
Tests:
- On a fresh stable container, running dist-upgrade succeeds.
- While dist-upgrade is running, /etc/apt/sources.list is unmodified. After the
operation is successfully completed, /etc/apt/sources.list has been updates
successfully. If the operation fails, /etc/apt/sources.list remains unmodified.
- During the run the following are run:
- apt update
- package holds
- debconf selections
- full-upgrade
- autoremove
- unattended-upgrades
- restarting freedombox service
- waiting 10 minutes
- apt update
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
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