HDD 공간의 알 수 없는 용도

내 공간의 68GB를 차지하는 CentoS 7 VPS가 있습니다. 내 서버에는 160GB의 저장 공간이 있습니다. 120GB를 사용하고 있다고 하네요. 하지만 내 서버는 약 50GB~65GB만 사용해야 합니다.

루트디렉토리에 "."라는 이름의 68GB 파일이 있다는 것을 발견했습니다. ( du -h --max-depth=1)를 실행했을 때 전체 사용량인 줄 알았는데, du -cksh *()를 실행했을 때 실제로는 총 60GB였습니다.

68GB에 이름없는 숨김파일이 있을까요?

[root@srv ~]# df -h /
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda        154G  122G   31G  80% /
[root@srv ~]# 


[root@srv /]# df -H
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        4.1G     0  4.1G   0% /dev
tmpfs           4.2G     0  4.2G   0% /dev/shm
tmpfs           4.2G   12M  4.1G   1% /run
tmpfs           4.2G     0  4.2G   0% /sys/fs/cgroup
/dev/sda        165G  131G   33G  80% /
/dev/sdc         85G   40G   41G  49% /mnt/DRIVE1
tmpfs           821M     0  821M   0% /run/user/0
[root@srv /]# 


[root@srv ~]# lsblk
NAME MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda    8:0    0 156.3G  0 disk /
sdb    8:16   0   3.8G  0 disk [SWAP]
sdc    8:32   0    80G  0 disk /mnt/DRIVE1
[root@srv ~]# 


[root@srv ~]# du -h --max-depth=1
16K ./.local
156M    ./.cache
7.0M    ./.acme.sh
4.0K    ./.spamassassin
8.0K    ./.ssh
9.3M    ./.npm
56K ./.razor
48K ./.subversion
20K ./.config
35M ./.composer
4.0K    ./.conf
11M ./node_modules
129M    ./jail
8.0K    ./.pki
8.0K    ./.cwp_sessions
346M    .
[root@srv ~]# cd /
[root@srv /]# du -h --max-depth=1
318M    ./boot
4.3M    ./tmp
6.6G    ./usr
0   ./sys
20G ./home
4.0K    ./.trash
0   ./dev
1.7G    ./opt
2.8G    ./var
16K ./lost+found
36K ./.channels
11M ./run
4.0K    ./srv
37G ./mnt
265M    ./root
4.0K    ./media
du: cannot access ‘./proc/24037/task/24037/fd/4’: No such file or directory
du: cannot access ‘./proc/24037/task/24037/fdinfo/4’: No such file or directory
du: cannot access ‘./proc/24037/fd/3’: No such file or directory
du: cannot access ‘./proc/24037/fdinfo/3’: No such file or directory
0   ./proc
43M ./etc
68G .
[root@srv /]# 


[root@srv /]# du -cksh *
16K aquota.group
16K aquota.user
0   bin
318M    boot
0   dev
44M etc
12G home
0   lib
0   lib64
16K lost+found
4.0K    media
37G mnt
1.7G    opt
du: cannot access ‘proc/24756/task/24756/fd/4’: No such file or directory
du: cannot access ‘proc/24756/task/24756/fdinfo/4’: No such file or directory
du: cannot access ‘proc/24756/fd/4’: No such file or directory
du: cannot access ‘proc/24756/fdinfo/4’: No such file or directory
0   proc
4.0K    razor-agent.log
311M    root
11M run
0   sbin
0   scripts
4.0K    srv
0   sys
4.3M    tmp
6.5G    usr
2.8G    var
60G total
[root@srv /]#