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Fixing Quirky save-session

July 11, 2017 — BarryK
Testers of Quirky Xerus64 8.1.6 experienced issues with saving a session in a live-CD or frugal installation.

The good news is that I fixed one show-stopper bug. It was to do with an incorrect path when using overlay instead of aufs.

The bad news is that I have hit another show-stopper bug, that seems to be a fault in overlay filesystem.
I am running kernel 4.11.9, so very recent overlay driver.

Booting the live-CD, have a zram on top, the read-write layer, and q.sfs on the bottom, the read-only layer.
When I tried to run "rm -rf <folder>" it spat out lots of errors about directories "not empty".

I googled, and found people reporting this error when using btrfs, or overlay.
btrfs I expect, it is flakey.

This is one of the overlayfs reports:
https://github.com/moby/moby/issues/9572

OK, I am going to compile the 4.11.9 kernel with aufs, see if that fixes it.

Comments

I am now running Quirky Xerus x86_64 8.1.93 (a beta of the upcoming 8.2) from a live-CD. The kernel is 4.11.9, now with aufs instead of overlay filesystem.

And it "just works". The show-stopper problem has gone away. So, overlay is not ready for prime time, or to be more blunt, it is broken.

Tags: quirky, linux