openvz disk used 100%

Question

So i discover after a mysql crash that the partion \ is full I normal condition i got 2 TB

root@server:/# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/simfs       39G   32G     0 100% /
none             24G  4.0K   24G   1% /dev
none            4.9G  1.1M  4.8G   1% /run
none            5.0M     0  5.0M   0% /run/lock
overflow        1.0M  4.0K 1020K   1% /tmp
none             20G     0   20G   0% /run/shm
none            100M     0  100M   0% /run/user

root@server:/# df -i
Filesystem        Inodes  IUsed     IFree IUse% Mounted on
/dev/simfs     240816105 390981 240425124    1% /
none             6291456     95   6291361    1% /dev
none             6291456     90   6291366    1% /run
none             6291456      3   6291453    1% /run/lock
overflow         6291456      8   6291448    1% /tmp
none             6291456      2   6291454    1% /run/shm
none             6291456      1   6291455    1% /run/user
root@server:/# resize2fs /dev/simfs
resize2fs 1.42.5 (29-Jul-2012)
open: Operation not permitted while opening /dev/simfs

I cannot do this command : umount resize2fs fdisk ......

It's a debian 8 64 bit running in openvz.

Answer 1

You cannot handle simfs like common block devices.

If you have enough spare storage on the HN, just assign more to that container:

# vzctl set CTID --save --diskspace 100G

Answer 2

Try searching for what is suddenly using the space ? Search for all files in root filesystem modified in the last 3 days:

find / -xdev -mtime -3 -ls