Comment 56 for bug 1906476

Revision history for this message
David D Lowe (flimm) wrote :

I've also gotten bitten by this. Upgrading to Ubuntu 21.10 caused weird filesystem issues to be present on my ZFS filesystem, with errors on the command-line such as:

Cannot access 'foobar': No such file or directory

When running ls -l in some directory, I get question marks, like this:

-????????? ? ? ? ? ? enum_binary_params.hpp
-????????? ? ? ? ? ? enum.hpp

I tried to select the "revert" option in the Grub boot menu to go back to Ubuntu 21.04, and that worked.

I then tried to install a fresh installation of Ubuntu 21.10 from a USB stick, selecting the ZFS option with encryption, and I am getting these errors again.

I only noticed now this note in the release notes:

> The version of the ZFS driver included in the 5.13.0-19 kernel contains a bug 16 that can result in filesystem corruption. Users of ZFS are advised to wait until the first Stable Release Update of the kernel in 21.10 before upgrading.

I know that this comment is not that useful to Ubuntu developers, but I'm posting it for the benefit of those searching for this issue in their favourite search engine.