NFS client input/output-error on kernel >=4.9
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Medium
|
Unassigned | ||
Zesty |
Expired
|
Medium
|
Unassigned |
Bug Description
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.
---
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CurrentDesktop: Unity:Unity7
DistroRelease: Ubuntu 17.04
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-08-11 (991 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
Package: linux (not installed)
Tags: zesty
Uname: Linux 4.8.17-
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: Upgraded to zesty on 2017-04-16 (12 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
_MarkForUpload: True
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1687130
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.