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disappeared hard disk space

Hi, all.

I need your help to find out what happened to my hard disk. The problem I've met is according to the used space in my /dev/sda8, there should be 6G left. But there's only 1G now. I can't move a file larger to 1G to that partition. Tried, but failed. I've also run some test and repairs. Unfortunately nothing's changed. Now I show you the results.

deva@kyley:~$ df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda3             9.2G  7.3G  1.5G  84% /
tmpfs                 5.0M     0  5.0M   0% /lib/init/rw
tmpfs                 200M  872K  199M   1% /run
udev                  992M     0  992M   0% /dev
tmpfs                 399M   84K  399M   1% /run/shm
/dev/sda4             184M   32M  143M  19% /boot
/dev/sda6             5.0G  1.8G  3.0G  38% /home
/dev/sda8              91G   85G  937M  99% /home/deva/iwish
/dev/sda1             9.4G  6.1G  3.3G  66% /home/deva/deka
/dev/sda5              33G   30G  2.6G  93% /home/deva/kon

deva@kyley:~$ df -h /dev/sda8
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda8              91G   85G  937M  99% /home/deva/iwish

root:/home/deva# du -sh iwish/
85G    iwish/

root:/home/deva# umount iwish/
root:/home/deva# e2fsck -f /dev/sda8
e2fsck 1.42-WIP (02-Jul-2011)
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
Iwish: 89788/6012928 files (2.0% non-contiguous), 22591653/24033024 blocks

root:/home/deva# parted /dev/sda8
GNU Parted 2.3
Using /dev/sda8
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print                                                           
Model: Unknown (unknown)
Disk /dev/sda8: 98.4GB
Sector size (logical/physical): 512B/512B
Partition Table: loop

Number  Start  End     Size    File system  Flags
 1      0.00B  98.4GB  98.4GB  ext4

root:/home/deva# cat /etc/mtab | grep sda8
/dev/sda8 /home/deva/iwish ext4 rw 0 0

5G space's just vanished. It cannot be journal. At least before yesterday sum of used and free sizes always equaled total size, refered to "df". So far as I could recall, the mistake may be that I deleted a directory in that partition when a extraction of files was running unnoticed into the same directory. Anyhow it was deleted afterwards.

Mit freundlichen Grüßen

Zichen Chen

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