Restoring data from corrupted ext4 partition under LVM - fsck or repair bad blocks first?

   dmesg | tail
   fsck.ext4 -vy /dev/sda1
   mkfs.ext4 -S /dev/sda1
   mount /dev/sda1 /test  

   mkfs.ext4 -S /dev/sda1 

    e2fsck -b 32768 /dev/sda1
    mount /dev/sda /test
    dmesg | tail
    smartctl -a /dev/sda | grep -i reallocated

     mount -t ext4 /dev/sda1 /mnt

 

     mount -o remount,rw /dev/sda1 /test

    

lvm vgscan
lvm vgchange -ay
lvm lvs