fsck.ext4 -fy /dev/datavg/homelv
e2fsck 1.43.4 (31-Jan-2017)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/datavg/homelv: 55150/182108160 files (0.4% non-contiguous), 399652095/754974720 blocks
utána pedig
mount /dev/datavg/homelv /mnt
mount: mount /dev/mapper/datavg-homelv on /mnt failed: Structure needs cleaning