Troubleshooting RAID

Setup: Our current RAID array with 5 drives in it is "md111". Its location is /dev/md111

Resize the blocks
resize2fs -f /dev/md111

Stop Array
mdadm --stop /dev/md111

Auto scan for arrays
mdadm --assemble --scan

Once the new mdadm.conf was ready, execute "sudo update-initramfs -u" This updats the conf file used by initramfs.
sudo update-initramfs -u