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jyoung
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Joined: 20 Mar 2007
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PostPosted: Thu Sep 05, 2019 7:01 am    Post subject: nfs unmount at shutdown Reply with quote

I'm have a strange situation where several machines get stuck while shutting down, frozen at the step where they unmount a NFS directory. I'm looking for a way to avoid this, and force the machines to shutdown.

There are actually a lot of threads out there about related problems, but there's a real range of answers. For instance, some threads suggest making the mount a soft mount, while others advocate avoiding this for NFS shares. It's really not clear what the best answer is.

This problem is intermittent, and only occurs ~5% of the time, so it may be difficult to test out possible solutions. The machines in question are running rc as an init system.

Thanks!
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C5ace
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Joined: 23 Dec 2013
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Location: Brisbane, Australia

PostPosted: Thu Sep 05, 2019 10:01 am    Post subject: Reply with quote

Code:
/etc/local.d/1-nsf.stop

#!/bin/sh

/bin/umount -a -f -t nfs,nfs4


See /etc/local.d/README
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All software has known and unknown bugs and vulnerabilities. Especially software written in complex, unstable and object oriented languages such as python, perl, C++, C#, Rust and the likes.
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jyoung
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PostPosted: Sat Sep 07, 2019 4:34 am    Post subject: Reply with quote

Thanks!

Reading the README, this does seem like a good place to have started.
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