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Adding A New Disk To A RAID Array part 2

I have added the new disk and the RAID array is finished syncing, now what?

You can check the result of the RAID sync with:

$sudo mdadm --detail /dev/md127
##Note the array size.

OR

In my case, I'm using logical volume management LVM.

$sudo pvdisplay
##Note the PV size

The PV size is what you can work with. In my case I want to allocate the free space to two logical volumes. I want to add 300GB to my Music lv and the rest to my Videos lv.

$sudo lvextend -L +300G /dev/ubuntu-vg/Music-lv
##This will add 300 GB to my Music-lv.

$sudo lvextend -l +100%FREE /dev/ubuntu-vg/Videos-lv
##This will add the rest of the free space left to my Videos-lv.

We still need to extend the filesystem to the added space. I have ext4 filesystem.

$sudo resize2fs /dev/ubuntu-vg/Music-lv
##This extends the filesystem to the added space.

$sudo resize2fs /dev/ubuntu-vg/Videos-lv
##This extends the filesystem to the added space.

Check the results.

$df -h
[donato@archdesktop ~]$ df -ht ext4
Filesystem                         Size  Used Avail Use% Mounted on
/dev/mapper/vol1-root               30G   18G   11G  62% /
/dev/mapper/vol1-home              174G   27G  138G  17% /home
/dev/mapper/ubuntu--vg-Music--lv   591G  210G  355G  38% /home/donato/Music
/dev/mapper/ubuntu--vg-Videos--lv  2.2T  1.1T  1.1T  51% /home/donato/Videos

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