How to verify which line in /etc/mtab ia not in use

I will explain

Some times on my linux servers some command are hung As df –k

So I Suspected on /etc/mtab file , and maybe some line is stuck the machine “df –k hung”

But /etc/fstab have many lines and not clearly for me which line I need to remove What the simple way to identify this


You probably have NFS mounts, and the NFS server is not responding. Typically if df hangs, then the next unlisted filesystem in order of /proc/mounts (not /etc/mtab!) is the culprit.

If this is a frequent occurance then it may be better to mount the NFS filesystem with the soft,intr options, so that you can stop the hanging process with ctrlc.

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