*** This bug is a duplicate of bug 1675079 ***
https://bugs.launchpad.net/bugs/1675079
** This bug is no longer a duplicate of bug 1357093
Kernels not autoremoving, causing out of space error on LVM or Encrypted
installation or on any installation, when /boot partition gets full
** This bug has been marked a duplicate of bug 1675079
16.04 LTS Partition /boot fills up with Kernel images, gets underwear in a
twist
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https://bugs.launchpad.net/bugs/1222690
Title:
small /boot partition for full system encryption becomes full after 7
updates and leads to failures
Status in linux package in Ubuntu:
Confirmed
Bug description:
During installation with full system encryption, the Ubuntu installer
creates an adequate /boot partition of around 100Mb.
However, after 10 updates to linux-image over the next few months,
along with the running of update-initramfs the /boot partition becomes
full. This causes further linux-image kernel updates to fail.
Additionally, there are (undiagnosed) edge cases where improper
handling of out-of-disk-space conditions in update-initramfs and/or
update-grub this leads to additional failures. (I fixed a computer
yesterday where /boot ran out of space, which caused grub to fail,
which ended with "No Operating System" being displayed by the EFI
BIOS. I previously fixed a system where a trivial upgrade failed on
account of historical kernels in /boot - not a system failure, but a
user interface disaster for Aunt Tilly.)
To prevent /boot from filling up, it would help if there was a limit
to the number of historic kernel versions maintained. Older kernel
versions are of interest to many developers, but having multiple
revisions of kernels that are not used is not helpful for regular
users.
A possible solution would be to "expire" automatically installed /boot
updates which are not in active use. A wilder approach would be to
move the large kernel files from /boot to some garbage collection
point in /var ... or maybe not. Allocating more space to be wasted in
/boot doesn't seem like a good idea.
The following workaround is published to remove all kernel versions
except the current one:
dpkg --get-selections | \
grep 'linux-image*' | \
awk '{print $1}' | \
egrep -v "linux-image-$(uname -r)|linux-image-generic" | \
while read n
do
apt-get -y remove $n
done
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