Linux Administration Cookbook

Listing filesystems with df

As well as knowing which of your disks is mounted where, you might also want to know which filesystem is being used atop the chunk of space; this is done with the -T flag:

$ df -TFilesystem                      Type     1K-blocks   Used Available Use% Mounted on/dev/mapper/VolGroup00-LogVol00 xfs       39269648 849924  38419724   3% /devtmpfs                        devtmpfs    239968      0    239968   0% /devtmpfs                           tmpfs       249712      0    249712   0% /dev/shmtmpfs                           tmpfs       249712   4572    245140   2% /runtmpfs                           tmpfs       249712      0    249712   0% /sys/fs/cgroup/dev/sda2                       xfs        1038336  64076    974260   7% /boottmpfs                           tmpfs        49944      0     49944   0% /run/user/1000

Here, we can easily see that our slash-root mount point (/) and boot mount point are formatted as XFS.

CentOS and Red Hat prefer to use XFS at present, but it's not uncommon ...