Resize Linux Partition
First resize the volume for LVM:
resize the lvm group
lvresize -L 10G /dev/mapper/vg0-var
to extend to the maximum (all available free space) lvextend -l +100%FREE /dev/mapper/vg0-var
Resize XFS Partition
grow to max size (note that you can only grow XFS partitions)
xfs_growfs /var
Resize ext3 partitionshrink/grow sda6 partition to 4G
resize2fs /dev/sda6 4G
expand partition to the fill the entire partition (run the e2fsck command, which basically defrags and puts all the data at the beginning of the partition, only if you are shrinking the partition).
e2fsck -f /dev/sda6 resize2fs /dev/sda6
create label for /dev/sda6
e2label /dev/sda6 /var
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