Public bug reported:
I'm experiencing input/output errors on mounting NFS-shares, starting
from kernel 4.9 and above.
No errors logged to syslog, but the system reports IO-errors when
reading from the mount after only a few seconds. Doesn't matter which
program that are accessing the disk.
My problems started after upgrading to ubuntu 17.04, but I have narrowed
it down to being present from ubuntu kernel 4.9 and above by installing
kernels from the ubuntu kernel ppa - i.e. when downgrading to latest
4.8-kernel from the PPA, NFS starts working as expected even on ubuntu
17.04. So it's definetely kernel related.
Probably not a hardware error either as the bug is present when NFS is
mounted over both eth0 and wlan0.
Only special thing in my setup is that NFS is mounted over an ssh-
tunnel.
The NFS server runs an completely up to date ubuntu 16.04 LTS install.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
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https://bugs.launchpad.net/bugs/1687130
Title:
NFS client input/output-error on kernel >=4.9
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