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I am running a RHEL 7 server with a license from my university. I am running it on a bare metal server in a local place on my university. I originally installed RHEL 7 with LVM on my hard drive (there is a 2TB HDD in the system). I started noticing that I was greeted with this message on login after a while.

mktemp: failed to create file via template ‘/tmp/.colorlsXXX’: No space left on device
-bash: $TMP: ambiguous redirect

If I would try updating the system, I would be greeted with a very similar message by yum. Upon evaluating the space left on my filesystem, the issue was apparent.

$ df -h
Filesystem             Size  Used Avail Use% Mounted on
/dev/mapper/rhel-root   50G   50G   20K 100% /
devtmpfs                12G     0   12G   0% /dev
tmpfs                   12G  4.0K   12G   1% /dev/shm
tmpfs                   12G  8.8M   12G   1% /run
tmpfs                   12G     0   12G   0% /sys/fs/cgroup
/dev/sda2              494M  170M  325M  35% /boot
/dev/sda1              200M  9.5M  191M   5% /boot/efi
/dev/mapper/rhel-home  1.8T  843G  958G  47% /home

The /dev/mapper/rhel-root part of my filesystem, where the root directory is located, is out of room and is causing issues with my system. Inside of LVM, is there a way I can resolve or fix this issue without reinstalling the operating system? Ideally, any other solution than reinstalling would be preferred. Thanks!

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Just extend the size of your logical volume.

lvextend -r -L +1G /dev/mapper/rhel-root
  • Not sure why I couldn't find this when searching, thanks. However, I have another issue when I run this command. $ sudo lvextend -r -L +25G /dev/mapper/rhel-root Couldn't create temporary archive name. Volume group "rhel" metadata archive failed. Any ideas what is going on now? – Justin W. Flory Nov 15 '15 at 14:00
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    Delete some space in /dev/mapper/rhel-root volume. LVM needs to write archives in /etc/lvm/backup, /etc/lvm/arvice... etc. – albertovar Nov 16 '15 at 7:34
  • I did this, but now it complains about something else. For example, if I try to add 1GB to /dev/mapper/rhel-root, I now get Insufficient free space: 256 extents needed, but only 16 available. I now have 49GB free in the volume… – Justin W. Flory Nov 17 '15 at 14:01
  • You have got only 16 extents free... you are ran out of space in "rhel" volumen group. Check it out: vgs rhe – albertovar Nov 17 '15 at 14:05

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