Public bug reported:
The initramfs hook in the initramfs-tools-ubuntu-core package includes
the following:
# Extra stuff we need
mkdir -p "$DESTDIR/etc/system-image/"
cp /etc/system-image/archive-master.tar.xz "$DESTDIR/etc/system-image/"
cp /etc/system-image/archive-master.tar.xz.asc "$DESTDIR/etc/system-image/"
copy_exec /bin/chown
copy_exec /bin/tar
copy_exec /usr/bin/gpg
copy_exec /usr/bin/system-image-upgrader
copy_exec /usr/bin/unxz
The i-t-u-c package does not depend on any of the packages providing
these files; which means that installing i-t-u-c without installing,
e.g., the package that provides /etc/system-image/archive-master.tar.xz
, can break initramfs upgrades for the system.
It's also not clear to me why the upgrade is being done from the
initramfs. My understanding was that Stéphane had proposed that the
update should be done from the running system using a namespace-specific
rw remount of the rootfs (preventing processes other than the upgrader
from writing to the disk). This would enable the update to be applied
with only a single reboot. With the proposed script, another reboot is
still required in order to fully apply the update because the update may
change the running kernel. (Which means that the current script is
buggy, because it doesn't reboot at the end - it just leaves the system
mounted rw and boots into it.)
** Affects: initramfs-tools-ubuntu-core (Ubuntu)
Importance: Undecided
Assignee: James Hunt (jamesodhunt)
Status: New
** Changed in: initramfs-tools-ubuntu-core (Ubuntu)
Assignee: (unassigned) => James Hunt (jamesodhunt)
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https://bugs.launchpad.net/bugs/1376111
Title:
initramfs-tools-ubuntu-core: hook assumes system-image is installed,
without dependency
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