Public bug reported:
A default ubuntu container created using "lxc-create -n ubuntu -t
ubuntu" results in 386M space used on /var/lib/lxc/ubuntu/rootfs. A big
part of that space is used by cached debs on
/var/lib/lxc/ubuntu/rootfs/var/cache/apt/archives/ . Running "apt-get
clean" inside the container's rootfs reduced space usage to 242M.
The wasted space becomes even more apparent if the backing store
supports compression (e.g. zfsonlinux with gzip compression enabled). In
this case the original used space (after compression) was 196M, and was
reduced to 95M after the cached package files are removed, over 50% disk
space saving.
Suggestion: Modify lxc-ubuntu template to run "apt-get clean" inside the
container's rootfs as part of container creation process.
# lsb_release -rd
Description: Ubuntu 12.04.1 LTS
Release: 12.04
# apt-cache policy lxc
lxc:
Installed: 0.7.5-3ubuntu62
Candidate: 0.7.5-3ubuntu62
Version table:
*** 0.7.5-3ubuntu62 0
500 http://archive.ubuntu.com/ubuntu/ precise-updates/universe amd64
Packages
100 /var/lib/dpkg/status
0.7.5-3ubuntu52 0
500 http://archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages
Expected result:
"lxc-create -t ubuntu" result in a container which uses disk space efficiently
Actual result:
"lxc-create -t ubuntu" result in a container which uses more disk space than it
should
** Affects: lxc (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1037626
Title:
lxc-create wastes disk space by keeping installation debs
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