I've followed instructions here exactly: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/recognize-expanded-volume-linux.html
for "Example: Extending the file system of NVMe EBS volumes" trying to grow a disk from 10 GB to 20 GB.
When I get to step 6, sudo xfs_growfs -d /, I get xfs_growfs: / is not a mounted XFS filesystem
Tried rebooting instance but that didn't help.
lsblk yields:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
nvme0n1 259:0 0 20G 0 disk
├─nvme0n1p1 259:1 0 19.9G 0 part /
├─nvme0n1p14 259:2 0 3M 0 part
└─nvme0n1p15 259:3 0 124M 0 part /boot/efi
df -h outputs:
Filesystem Size Used Avail Use% Mounted on
udev 224M 0 224M 0% /dev
tmpfs 47M 2.2M 45M 5% /run
/dev/nvme0n1p1 20G 9.1G 9.6G 49% /
tmpfs 233M 0 233M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 233M 0 233M 0% /sys/fs/cgroup
/dev/nvme0n1p15 124M 262K 124M 1% /boot/efi
tmpfs 47M 0 47M 0% /run/user/1000
Notice the available space on the /dev/nvme0n1p1 device says 49% but according to the Used/Avail columns it should be more like 99%.
Best Answer
Got this error when using it on a file system that wasn't XFS.
Had to use this instead (for ext4 volumes).