Disk space¶

It’s quite common to want to check the status of the various partitions/drives on your server to see how full they are. To do so run this command:

   df -h

This will produce output similar to the following:

   [root@mail ~]# df -h
   Filesystem            Size  Used Avail Use% Mounted on
   /dev/mapper/VolGroup-lv_root
                          19G  1.6G   16G   9% /
   tmpfs                 245M     0  245M   0% /dev/shm
   /dev/sda1             485M   47M  413M  11% /boot

In this basic example, we can see that the / partition only has 9% used.

For a more complex example that also covers using df to see various mountpoints, see below:

   [root@mail ~]# df -h
   Filesystem            Size  Used Avail Use% Mounted on
   /dev/mapper/VG-root   1.9T  1.7T   89G  95% /
   /dev/mapper/VG-var    431G  145G  264G  36% /var
   devtmpfs              7.8G  204K  7.8G   1% /dev
   tmpfs                 7.8G  4.0K  7.8G   1% /dev/shm
   /dev/md1              495M  126M  344M  27% /boot
   ku.example.com:9421   2.5T  487G  2.0T  20% /mnt/test
   tmpfs                 500M   86M  415M  18% /var/ngx_pagespeed_cache

In this example, we have a root partition that’s 95% full along with an additional /var partition that’s only 36% full. It’s got an external network mount of 2T that’s mounted on /mnt/test and a ramdisk/tmpfs mount of 500M mounted on /var/ngx_pagespeed_cache.

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Disk space¶