/var/log full. But not full

[jimm]

I have a 15600 appliance running R80.30 VSX. bash commands such as df -m indicate that the /var/log partition is nearly full. Yet if i sum the contents of everything in /var/log; or use a command such as du -sm /var/log, i get a combined files size which is much lower. Would anyone know why there is a discrepancy? 

[Chris_Atkinson]

Please check if sk95487 is relevant in your case, also which jumbo take is applied to the cluster?

Note R80.30 is no longer supported so please consider your options to upgrade.

[Tobias_Moritz]

Another reason could be large files which are deleted but still kept open by a running process. They are (normally) not visible in file system, but block disk space.

Check lsof | grep '(deleted)'

Terminating the process which keeps these files open would help. Or a reboot of course.