OverlayFS not writeable

[Sebastian Sonne]

A customer of ours has a collection of servers in a test environment which
mounts production data via NFS. The NFS is then mounted as the lower directory
of an overlayfs, $directory_workdir is mounted as the workdir, and
$directory_cow is mounted as the upper directory. However, as of recent, the
customer can not edit any data unless the necessary files are 'touch'ed first
(or if you use vim, force-written).

"uname -a" returns "Linux <shortname> 4.4.0-104-generic #127-Ubuntu SMP Mon Dec
11 12:16:42 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux".

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1744884

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.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.15 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15-rc9

[Sebastian Sonne (planeswalkertrey)]

We only yesterday got around to testing. We tried 4.16.0-041600rc2-generic, and the issue persists. I think we can close this issue, and I'll open a kernel-bug.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]