One day I was unable to install updates because all the free space disappeared from my rootfs. AFAIK I shouldn’t have too much large stuff stored on this file system, so I decided to figure out what was going on.
Listing installed voidlinux packages ordered by size
This should be an easy task, but it took a while for me to figure out how to actually do it:
xbps-query --regex -p installed_size -s '.*' | sort -k2 -h
Using this, I found that the arm cross gcc toolchain was installed, but since I use Docker for devenv isolation, I don’t actually need it anymore.
Purging old kernels
As ncdu pointed out, I have several versions of the Linux kernel installed
(headers and modules). voidlinux keeps them for safety. There is no
automated way for xbps to take care of these, but there is a tool
named vkpurge:
sudo vkpurge rm all
(This won’t delete the current version.)
I used this tool, but it left out most of the files from the 4.19.x Linux
kernel series. Using xlocate, I confirmed those were orphaned, so I
removed them using direct commands.
With all this, I managed to free up 11 GB of disk space! A lot of unneeded
stuff was hanging around under /usr/lib/modules and /usr/src.