Resizing XFS on ProxMox KVM

In this example we'll expand a partition sdb1 mounted on the /opt directory.

on the proxmox side

The first thing to do is expand the disk using the proxmox UI, for that you'll need to turn off the kvm instance, expand the disk and turn it on again.

on the linux side

now with the os running you can

umount /opt
parted /dev/sdb
resizepart sdb1 100%
xfs_repair /dev/sdb1
mount /opt
xfs_growfs /dev/sdb1

that's it!

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