kvm virtualization - How to expand EXT4 volume in a centos KVM guest after resizing the guest's LV

I have a fedora KVM host with all the centos VMs in their
own LVs. I'd like to expand an EXT4 home volume on a guest that resides on a LV called
"thelogicalvolume" in volume group
"thevolumegroup"...

On the host I
have run:

# sudo lvextend -L +1T
            thevolumegroup/thelogicalvolume

which
results with:

Size of logical
            volume thevolumegroup/thelogicalvolume changed from 500.00 GiB (128000 extents) to
            <1.49 TiB (390144 extents).
Logical volume thevolumegroup/thelogicalvolume
            successfully
            resized.

Then...

In
the guest i tried:

# sudo
            resize2fs
            /dev/mapper/centos-home

Which
results in:

resize2fs
            1.42.9 (28-Dec-2013)
The filesystem is already 116684800 blocks long. Nothing
            to do!

#
            df

on the VM
returns:

Filesystem
            1K-blocks Used Available Use% Mounted on
/dev/mapper/centos-root 52403200
            1316820 51086380 3% /
devtmpfs 1928348 0 1928348 0% /dev
tmpfs
            1940276 0 1940276 0% /dev/shm
tmpfs 1940276 8764 1931512 1%
            /run
tmpfs 1940276 0 1940276 0% /sys/fs/cgroup
/dev/vda1 1038336
            192804 845532 19% /boot
/dev/mapper/centos-home 459282608 435929264 0 100%
            /home
tmpfs 388056 0 388056 0%
            /run/user/1000

I
can't see the free space from within the VM using fdisk, parted,
etc.

On the host I also
tried:

sudo virsh blockresize
            --path /dev/thevolumegroup/thelogicalvolume --size 1T

No
luck.

I have searched for solutions,
but have not found one that works with this setup, or I am overlooking
something.

Thoughts?

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