findmnt

Overview

findmnt lists or searches mounted filesystems in table or tree form. Clearer than parsing mount output and convenient in scripts (-J, -n, -o).

Syntax

findmnt [options] [device|mountpoint]

Common Options

Option	Description
(none)	Tree of mounts
-t types	Filter FS types
-S source	Match source device
-T path	Filesystem containing path
-D	df-like size columns
-o list	Columns
-n	No header
-r	Raw
-J	JSON
-f	First only
--verify	Check fstab (newer)

Examples with Explanations

findmnt
findmnt -D
findmnt -t ext4,xfs,nfs
findmnt -T /var/log
findmnt /
findmnt -S /dev/sdb1
findmnt -o TARGET,SOURCE,FSTYPE,OPTIONS /mnt/data
findmnt -J | jq -r '.filesystems[].target'
findmnt --verify

Busy mount debugging

findmnt /mnt/data
sudo lsof +f -- /mnt/data | head

Related Commands

• mount / umount
  
• lsblk -f / df -h
  
• blkid