check that partition

fsck.ext4 -fDcty -C 0 /dev/sda1

-f = force check
-D = optimize directories if possible
-c = check for bad blocks
-t = print timing stats (use -tt for more)
-v = verbose
-y = assume "yes" to all questions
-C 0 = print progress info to stdout

Here's a snapshot of me checking my raid disk. Click to enlarge

without checking bad blocks:
fsck.ext4 -fDvy -C 0 /dev/sda1