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There are two machines: (a) is the NFS server and (b) is the NFS client.
When machine (a) reboots is there a way to recover the NFS client on machine (b) without a reboot?

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  • What OS is running on the NFS client? What errors are you seeing? – Mark Plotnick Dec 28 '15 at 16:44
  • Fedora 15 and 22. Not really seeing any errors, but if I ls the mount point the shell just hangs there. – user800133 Dec 28 '15 at 16:56
  • Is there anything in the system logs on the clients detailing the NFS errors? – Mark Plotnick Dec 28 '15 at 17:01
  • Curious if the server is OK after the reboot. On a client that is hanging, can you successfully manually mount the server's filesystem on a different mount point? – Mark Plotnick Dec 28 '15 at 17:03
  • I'm seeing this error in Dec 29 21:49:08 localhost kernel: [133067.342478] nfs: server <server hostname> not responding, still trying on the client. – user800133 Dec 30 '15 at 5:59
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I don't understand what you mean by the word recover but if you mean to remount then yes, it is as simple as sudo mount -a.

  • Thanks, but I'm not using fstab. I just run mount manually. – user800133 Dec 28 '15 at 16:58
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    well then maybe you should. – Digisec Dec 28 '15 at 16:59
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    should it not be mount -a -o remount? – Rui F Ribeiro Dec 28 '15 at 17:20
  • You can do a remount if you want but if the server was rebooted, it is a good chance that the mount is lost, if it isn't then I would only remount that instead of everything. – Digisec Dec 28 '15 at 17:36
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You can try a umount -f mountpoint

I have seen this a lot on my RHEL 7 machines connected to a Windows NFS server. The umount command will fail, but it will release whatever is keeping the client from operating.

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