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Accepted
Alexander Kolodziej
Asked: 2019-01-27 14:44:19 +0800 CST

Can not umount NFS directory (ignored)

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I have a few servers that have NFS mounted directories. I have shut down the service that is using them, and fuser -m doesnt show any other processes using any files there.

When i do "umount -at nfs" i dont get any error messages, but also nothing happens. The directories remain mounted, and seemingly in operational state.

If i add -v to umount it says that those directories are - ignored. Also -f doesnt help anything.

Any suggestions?

linux

1 Answers

  1. Best Answer

    If those filesystems are actually using NFSv4, then the type should be -t nfs4 instead of -t nfs. This is a kind of asymmetry, because those can be mounted using also the -t nfs option.

    You can check this by using for example df -T which will display Type nfs4 instead of nfs.

    So try this:

    umount -at nfs4

    Explictly umount-ing a specific path without stating the mount type should also work of course.

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