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I have an Ubuntu Server installation 14.04 that I used the ubuntu default LVM partitioning by the installer (With the /home, /, /tmp... as separate partitions) and I never thought anything of it and installed a few apps and now, I went to apply updates and it tells me there is no disk space. The installer created a 350M / partition and it's full but I have a bunch of free space;

/dev/mapper/owncloud--vg-root  321041   310156   0        100%  /
none                           4        0        4        0%    /sys/fs/cgroup
udev                           1010156  4        1010152  1%    /dev
tmpfs                          204268   1028     203240   1%    /run
none                           5120     0        5120     0%    /run/lock
none                           1021320  0        1021320  0%    /run/shm
none                           102400   0        102400   0%    /run/user
/dev/mapper/owncloud--vg-usr   7420304  1651456  5368876  24%   /usr
/dev/mapper/owncloud--vg-var   2817056  488112   2166128  19%   /var
/dev/sda1                      240972   38065    190466   17%   /boot
/dev/mapper/owncloud--vg-tmp   368615   2188     342875   1%    /tmp
/dev/mapper/owncloud--vg-home  7891880  17972    7449972  1%    /home

I've been going through the forums for a while and have tried everything I've found to clean up space but nothing is working. I have no old kernels, tried cleaning up packages, removed lost+found, deleted a duplicate website folder I had. Everything seems to be working OK so I'm wondering if this is an issue or is this just the way Ubuntu should have partitioned the drive? Thanks,

steeldriver
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Ryan H
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1 Answers1

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It's pretty rare these days to find /usr split off into its own partition (or logical volume, as you've got). I used to do it that way myself, but I haven't had such a system for a while now. I've just checked a couple of systems I have and, subtracting out the space used by /usr, /var, and /home (when they're not separate filesystems), I've found disk space used in / alone in the 370-500MiB range.

Your /dev/mapper/owncloud--vg-root logical volume, by contrast, is just 313MiB in size. Thus, it's not really surprising that you're running out of space, and even if you delete some files, you'll probably be in the same boat again very soon. I recommend you either re-install with a larger /, and perhaps keep /usr and/or /var within that / (in which case it should be much larger -- say, 10-30GiB); or use system-config-lvm or the LVM command-line tools to resize your logical volumes and grow /. Given the space used on my systems, I'd make it at least 1GiB. There are several questions and answers on the latter topic on this site, such as:

A broader Web search turns up quite a few tutorials on this subject, too.

Community
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Rod Smith
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