An update: this is the last known good test: https://berlin.guixsd.org/build/1793057/details
and this is the first known-bad (‘mdadm’ failing with “cannot assemble multi-zone RAID0 without default_layout setting”): https://berlin.guixsd.org/build/1795351/details We have to resort to an ungly hack to get the evaluation number and corresponding commit of each build because they aren’t accessible over HTTP (which is unfortunate!): --8<---------------cut here---------------start------------->8--- sqlite> select * from builds where rowid = 1793057; /gnu/store/618hm2w0clcrxz16yww846mgqdc1l4s0-raid-root-os.drv|7863|test.raid-root-os.i686-linux|i686-linux|raid-root-os||0|1570439988|1570459635|1570459744 sqlite> select * from checkouts where evaluation = 7863; guix-master|7b6a8e23b0de18262a42e44432f955517d71d796|7863|guix|/gnu/store/7sd2lwj83n6kyn66p9bdgs5yvzqnl539-guix-7b6a8e2 sqlite> select * from builds where rowid = 1795351; /gnu/store/qskl45gw9y9hd8qp7s5451d53pvpc60q-raid-root-os.drv|7867|test.raid-root-os.i686-linux|i686-linux|raid-root-os||2|1570440409|0|1570457622 sqlite> select * from checkouts where evaluation = 7867; guix-master|7d82e920717f08bceb42bb570d786dff233171e1|7867|guix|/gnu/store/b2cq9zhdsz4qri2xkg3rgwmyri0wyxxb-guix-7d82e92 --8<---------------cut here---------------end--------------->8--- So the commit that introduced the change of behavior of ‘mdadm’ is: --8<---------------cut here---------------start------------->8--- commit 7d82e920717f08bceb42bb570d786dff233171e1 Date: Sun Oct 6 06:07:15 2019 +0000 gnu: linux-libre: Update to 5.3.4. --8<---------------cut here---------------end--------------->8--- And indeed that brings us back to: https://blog.icod.de/2019/10/10/caution-kernel-5-3-4-and-raid0-default_layout/ Hmm alright, nothing new here. Oh well! Ludo’.
