[root@sns-oss4 ~]# e2fsck -n /dev/mpath/sns-ddn1-l3 e2fsck 1.42.3.wc1 (28-May-2012) snsfs-OST0003 contains a file system with errors, check forced. 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 Block bitmap differences: -(639602688--639604480) -(639606784--639608831) -(639610880--639612927) -(639614976--639617023) -(639619072--639621119) -(639623168--639623971) Fix? no Free blocks count wrong for group #19519 (14336, counted=3547). Fix? no Free blocks count wrong (2687836218, counted=2687825429). Fix? no snsfs-OST0003: ********** WARNING: Filesystem still has errors ********** snsfs-OST0003: 148972/29868032 files (6.2% non-contiguous), 1135271878/3823108096 blocks [root@sns-oss4 ~]# e2fsck /dev/mpath/sns-ddn1-l3 e2fsck 1.42.3.wc1 (28-May-2012) snsfs-OST0003 contains a file system with errors, check forced. 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 Block bitmap differences: -(639602688--639604480) -(639606784--639608831) -(639610880--639612927) -(639614976--639617023) -(639619072--639621119) -(639623168--639623971) Fix? yes snsfs-OST0003: ***** FILE SYSTEM WAS MODIFIED ***** snsfs-OST0003: 148972/29868032 files (6.2% non-contiguous), 1135271878/3823108096 blocks