Bug#475430: backup_initramfs not documented on update-initramfs.conf.5.gz
The configuration file allows to disable the update action from update-
Actually it does more...
Default is yes for running the latest initramfs-tools hooks in
the newest Linux image. Setting it to all updates any known
initramfs. It is possible to set it to no for remote servers or
boxes where conservative manners needs to be applied. This dis-
ables the update_initramfs -u call.
...like the backup_initramfs which is not documented on this man page.
By the way, today I saw upon apt-get upgrade:
Processing triggers for initramfs-tools ...
update-initramfs: /boot/initrd.img-2.6.22-3-686 has been altered.
update-initramfs: Cannot update. Override with -t option.
Maybe emit a big warning:
Run "update-initramfs -k all -u -t" or else .... might happen next boot!
(Or maybe even make running that the default in update-initramfs.conf ?)