d7c7fc4603
It turns out that checking for the last mount time of an ext4 file system isn't a very reliable way to check whether the file system was properly unmounted. When creating that test in the first place (88530e02b6fa9b5429dc09972b), I was reluctant to inspect the file system when the VM is down and was searching for a way to check for a clean unmount *after* the file system was mounted again to make sure we don't need to create a 512 MB raw image on the host. Fortunately however, when converting from qcow2, qemu-img actually writes a sparse file, so for most file systems (that is, file systems supporting sparse files) this shouldn't waste a lot of disk space. So when investigating the flakiness, I found that whenever the test is failing, the unmount of /test-x-initrd-mount was done *before* the final step during which systemd remounts+unmounts all the remaining file systems. I haven't investigated why this is the case, but the test is a regression test for https://github.com/NixOS/nixpkgs/issues/35268, which actually didn't unmount the file system *at* *all*, so really all we need to take care here is whether the unmount has happened and not *how*. To make sure that checking the filesystem state is enough for this, I temporarily replaced the $machine->shutdown call with $machine->crash and verified that the file system state is "not clean". Signed-off-by: aszlig <aszlig@nix.build> Fixes: https://github.com/NixOS/nixpkgs/issues/67555
Nixpkgs is a collection of packages for the Nix package manager. It is periodically built and tested by the Hydra build daemon as so-called channels. To get channel information via git, add nixpkgs-channels as a remote:
% git remote add channels https://github.com/NixOS/nixpkgs-channels.git
For stability and maximum binary package support, it is recommended to maintain
custom changes on top of one of the channels, e.g. nixos-19.03 for the latest
release and nixos-unstable for the latest successful build of master:
% git remote update channels
% git rebase channels/nixos-19.03
For pull requests, please rebase onto nixpkgs master.
NixOS Linux distribution source code is located inside
nixos/ folder.
- NixOS installation instructions
- Documentation (Nix Expression Language chapter)
- Manual (How to write packages for Nix)
- Manual (NixOS)
- Community maintained wiki
- Continuous package builds for unstable/master
- Continuous package builds for 19.03 release
- Tests for unstable/master
- Tests for 19.03 release
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