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?

Comments

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