Comment 0 for bug 1881847

If the NFS server reboots, sometimes client servers fail to re-establish the NFS mount properly. This is using NFS v4.2. The client machine will hang if I try to do a df when an NFS mount is in this condition. Attempting to access a file will likewise hang indefinitely. This is a problem with the stock 5.3.0.x kernel and it is a problem with 5.6 still. I have not tried 5.7 yet.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: nfs-kernel-server 1:1.3.4-2.5ubuntu3
Uname: Linux 5.6.0 x86_64
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: MATE
Date: Tue Jun 2 21:34:31 2020
InstallationDate: Installed on 2017-05-27 (1102 days ago)
InstallationMedia: Ubuntu-MATE 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: nfs-utils
UpgradeStatus: Upgraded to focal on 2020-04-26 (38 days ago)