Shrink ext4 partition

We want a 10G partition therefore we need to resize the filesystem to a smaller size to something like 9G.


# e2fsck -f /dev/sda2
# resize2fs /dev/sda2 9G

Delete the partition and create a new one with 10 G size.


# cfdisk /dev/sda

Run resize2fs without size parameter


# resize2fs /dev/sda2

Done

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Shrink ext4 partition