Downgrade to util-linux v2.36 to workaround kernel bug
losetup (>=2.37)[1] uses the LOOP_CONFIGURE ioctl which discard support is broken[2].
[1] https://github.com/karelzak/util-linux/pull/1152 [2] https://lore.kernel.org/linux-block/20210617221158.7045-1-kristian@klausen.dk/T/
Fix #138 (closed)