sid:~# uname -a Linux sid 2.6.30-rc2 #3 Sat Apr 18 21:46:13 CEST 2009 x86_64 GNU/Linux sid:~# /opt/e2fsprogs/sbin/fsck.ext4 -V e2fsck 1.41.5 (23-Apr-2009) Using EXT2FS Library version 1.41.5, 23-Apr-2009 sid:~# mount -t ext4 /dev/md0 /mnt/md0 sid:~# grep md0 /proc/mounts /dev/md0 /mnt/md0 ext4 rw,relatime,barrier=1,data=ordered 0 0 sid:~# ls -la /mnt/md0/lost* ls: cannot access /mnt/md0/lost+found/#12042: Input/output error ls: cannot access /mnt/md0/lost+found/#12207: Input/output error ls: cannot access /mnt/md0/lost+found/#12249: Input/output error total 20 c????????? ? ? ? ? ? #12042 s????????? ? ? ? ? ? #12207 s????????? ? ? ? ? ? #12249 drwx------ 2 root root 16384 Apr 23 21:16 . drwxr-xr-x 5 root root 4096 Apr 23 21:15 .. sid:~# umount /mnt/md0 sid:~# /opt/e2fsprogs/sbin/fsck.ext4 -v /dev/md0 e2fsck 1.41.5 (23-Apr-2009) /dev/md0 contains a file system with errors, check forced. Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure i_file_acl_hi for inode 12042 (/lost+found/#12042) is 64578, should be zero. Clear? yes i_file_acl_hi for inode 12207 (/lost+found/#12207) is 5, should be zero. Clear? yes i_file_acl_hi for inode 12249 (/lost+found/#12249) is 5, should be zero. Clear? yes i_file_acl_hi for inode 12090 (/t/#12090) is 5932, should be zero. Clear? yes Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information /dev/md0: ***** FILE SYSTEM WAS MODIFIED ***** 29582 inodes used (12.11%) 3 non-contiguous files (0.0%) 6 non-contiguous directories (0.0%) # of inodes with ind/dind/tind blocks: 1/1/1 Extent depth histogram: 29566/2 223213 blocks used (22.87%) 0 bad blocks 1 large file 27807 regular files 1762 directories 2 character device files 0 block device files 0 fifos 0 links 0 symbolic links (0 fast symbolic links) 2 sockets -------- 29573 files sid:~# mount -t ext4 /dev/md0 /mnt/md0 sid:~# ls -la /mnt/md0/lost* ls: cannot access /mnt/md0/lost+found/#12042: Input/output error ls: cannot access /mnt/md0/lost+found/#12207: Input/output error ls: cannot access /mnt/md0/lost+found/#12249: Input/output error total 20 c????????? ? ? ? ? ? #12042 s????????? ? ? ? ? ? #12207 s????????? ? ? ? ? ? #12249 drwx------ 2 root root 16384 Apr 23 21:16 . drwxr-xr-x 5 root root 4096 Apr 23 21:15 .. sid:~# umount /mnt/md0 sid:~# /opt/e2fsprogs/sbin/fsck.ext4 -vy /dev/md0 e2fsck 1.41.5 (23-Apr-2009) /dev/md0 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 29582 inodes used (12.11%) 3 non-contiguous files (0.0%) 6 non-contiguous directories (0.0%) # of inodes with ind/dind/tind blocks: 1/1/1 Extent depth histogram: 29566/2 223213 blocks used (22.87%) 0 bad blocks 1 large file 27807 regular files 1762 directories 2 character device files 0 block device files 0 fifos 0 links 0 symbolic links (0 fast symbolic links) 2 sockets -------- 29573 files sid:~# sid:~# /opt/e2fsprogs/sbin/fsck.ext4 -vy /dev/md0 e2fsck 1.41.5 (23-Apr-2009) /dev/md0: clean, 29582/244320 files, 223213/975888 blocks sid:~# /opt/e2fsprogs/sbin/fsck.ext4 -vyf /dev/md0 e2fsck 1.41.5 (23-Apr-2009) 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 29582 inodes used (12.11%) 3 non-contiguous files (0.0%) 6 non-contiguous directories (0.0%) # of inodes with ind/dind/tind blocks: 1/1/1 Extent depth histogram: 29566/2 223213 blocks used (22.87%) 0 bad blocks 1 large file 27807 regular files 1762 directories 2 character device files 0 block device files 0 fifos 0 links 0 symbolic links (0 fast symbolic links) 2 sockets -------- 29573 files sid:~# echo $? 0