Full root-filesystem and difference between du and df

[steff123]

Hey, one server runs occasionally to a 100% full root-filesystem and after a restart all is fine again. Currently it is the state but I have no chance to analyze it, because there is a big difference of 5G between du and df

#df -h | grep pve-root
/dev/mapper/pve-root               22G     22G     0  100% /

#du -shx /
17G    /

Any ideas?

 

[fabian]

possibly something got mounted over a directory that contains the missing 5G? you could bind-mount / somewhere else and check the usage there..

 

[steff123]

Forgotten to mention that I have tried this trick before

du -shx /mnt/data/root 17G /mnt/data/root

 

[oguz]

you could check the output from find /proc/*/fd -ls | grep '(deleted)' to see if there are any open files that were deleted (those can still take space until the file descriptors are closed) [0]

[0]: https://unix.stackexchange.com/ques...s-that-are-open-but-have-been-deleted[/icode]