When you need to access LUKS encrypted partition with a Fedora Live CD or USB

mount-encrypted-partition-fedora-live-usb.sh

# make sure crypt module in use
sudo modprobe dm-crypt

# Find out which drive it was with the following command:
sudo fdisk -l

# You must mount /dev/sda3 myvolume
# use cryptsetup, device is accessible under /dev/mapper/myvolume
sudo cryptsetup luksOpen /dev/sde3 myvolume

# scan for LVM volumes and choose the right volume group name that you are looking for:
sudo vgscan
# If it is eg. Fedora, activate it
sudo vgchange -ay system

# find out root volume
sudo lvs

# mount it with the following command:
sudo mount /dev/system/root /mnt/

# to work in the volume use the following commands
sudo mount --bind /dev /mnt/dev 
sudo mount --bind /dev/pts /mnt/dev/pts
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys /mnt/sys
sudo chroot /mnt

# consider mounting /boot also