Dateisystembereinigung funktioniert nicht mehr

[~] # df
Filesystem                Size      Used Available Use% Mounted on
/dev/ram                 32.9M     16.9M     16.0M  51% /
tmpfs                    64.0M    396.0k     63.6M   1% /tmp
/dev/sda4               371.0M    359.2M     11.8M  97% /mnt/ext
/dev/md9                509.5M    158.4M    351.1M  31% /mnt/HDA_ROOT
tmpfs                     1.0M         0      1.0M   0% /mnt/rf/nd

[~] # umount /dev/md9
umount: /mnt/HDA_ROOT: device is busy
umount: /mnt/HDA_ROOT: device is busy
[~] #
[~] # lsof +f -- /dev/md9
COMMAND   PID  USER   FD   TYPE DEVICE SIZE/OFF  NODE NAME
hwmond  17142 admin    3r   REG    9,9       51  6986 /mnt/HDA_ROOT/.config/sysHealth.conf (deleted)
dd      17288 admin    4w   REG    9,9        0 20486 /mnt/HDA_ROOT/.logs/kmsg
[~] #
[~] # kill 17142
[~] # kill 17288
[~] # umount /dev/md9
umount: /mnt/HDA_ROOT: device is busy
umount: /mnt/HDA_ROOT: device is busy


[~] # e2fsck -f -v -C 0 /dev/md9
e2fsck 1.42.6 (21-Sep-2012)
/dev/md9 is mounted.
e2fsck: Cannot continue, aborting.