Je sais pas si c'est vraiment correct mais j'ai ceci :
(Disque toujours monté normalement...)
Apparemment, /dev/md0 serait la première partition qui est utilisée pour /dev/root alias rootfs.

DiskStation> e2fsck -v -n -f /dev/md0
e2fsck 1.40.3 (05-Dec-2007)
Warning! /dev/md0 is mounted.
Warning: skipping journal recovery because doing a read-only filesystem check.
Pass 1: Checking inodes, blocks, and sizes
Inode 68223 has INDEX_FL flag set on filesystem without htree support.
Clear HTree index? no

Inode 70302 has INDEX_FL flag set on filesystem without htree support.
Clear HTree index? no

Inode 114689 has INDEX_FL flag set on filesystem without htree support.
Clear HTree index? no

Inode 229377 has INDEX_FL flag set on filesystem without htree support.
Clear HTree index? no

Inode 230483 has INDEX_FL flag set on filesystem without htree support.
Clear HTree index? no

Deleted inode 278786 has zero dtime. Fix? no

Pass 2: Checking directory structure
Problem in HTREE directory inode 68223: node (1) has bad max hash
Problem in HTREE directory inode 68223: node (2) has bad min hash
Invalid HTREE directory inode 68223 (/usr/syno/synoman/webman/images). Clear? n o

Problem in HTREE directory inode 70302: node (1) has bad max hash
Problem in HTREE directory inode 70302: node (2) has bad min hash
Invalid HTREE directory inode 70302 (/usr/syno/synoman/surveillance/images). Cl ear? no

Problem in HTREE directory inode 114689: node (1) has bad max hash
Problem in HTREE directory inode 114689: node (2) has bad min hash
Problem in HTREE directory inode 114689: node (2) has bad max hash
Problem in HTREE directory inode 114689: node (3) has bad min hash
Problem in HTREE directory inode 114689: node (3) has bad max hash
Problem in HTREE directory inode 114689: node (4) has bad min hash
Problem in HTREE directory inode 114689: node (4) has bad max hash
Problem in HTREE directory inode 114689: node (5) has bad min hash
Problem in HTREE directory inode 114689: node (5) has bad max hash
Problem in HTREE directory inode 114689: node (6) has bad min hash
Problem in HTREE directory inode 114689: node (6) has bad max hash
Problem in HTREE directory inode 114689: node (7) has bad min hash
Problem in HTREE directory inode 114689: node (7) has bad max hash
Problem in HTREE directory inode 114689: node (8) has bad min hash
Invalid HTREE directory inode 114689 (/dev). Clear? no

Problem in HTREE directory inode 229377: node (1) has bad max hash
Problem in HTREE directory inode 229377: node (2) has bad min hash
Invalid HTREE directory inode 229377 (/lib). Clear? no

Problem in HTREE directory inode 230483: node (1) has bad max hash
Problem in HTREE directory inode 230483: node (2) has bad min hash
Invalid HTREE directory inode 230483 (/lib/perl5/5.8.6/unicore/lib/gc_sc). Clea r? no

Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Block bitmap differences: -(587505--587506) -(607544--607552) -(607554--607590) -(607609--607882) -(607884--608008)
Fix? no

Inode bitmap differences: -278786
Fix? no


1.39-Dec272008: ********** WARNING: Filesystem still has errors **********


16278 inodes used (5.23%)
433 non-contiguous inodes (2.7%)
# of inodes with ind/dind/tind blocks: 1111/55/0
616634 blocks used (99.06%)
0 bad blocks
1 large file

12977 regular files
1514 directories
59 character device files
1321 block device files
0 fifos
4 links
395 symbolic links (395 fast symbolic links)
2 sockets
--------
16272 files