| 7 Dec 2022 |
 @hexa:lossy.network | oh | 21:34:19 |
| @hexa:lossy.network | neat | 21:34:43 |
 @elvishjerricco:matrix.org | hexa: Do you see anything in the journal about your rollback service? | 21:38:02 |
| @hexa:lossy.network | 1 min | 21:38:31 |
| @hexa:lossy.network | Dec 07 21:38:52 localhost systemd[1]: impermanence-root.service: Main process exited, code=exited, status=1/FAILURE
Dec 07 21:38:52 localhost systemd[1]: impermanence-root.service: Failed with result 'exit-code'.
Dec 07 21:38:52 localhost systemd[1]: Failed to start impermanence-root.service.
| 21:40:29 |
| @hexa:lossy.network | * Dec 07 21:38:52 localhost systemd[1]: Starting impermanence-root.service...
Dec 07 21:38:52 localhost systemd[1]: Starting Create List of Static Device Nodes...
Dec 07 21:38:52 localhost systemd[1]: Starting Journal Service...
Dec 07 21:38:52 localhost systemd[1]: Starting Load Kernel Modules...
Dec 07 21:38:52 localhost systemd[1]: Starting Coldplug All udev Devices...
Dec 07 21:38:52 localhost systemd[1]: impermanence-root.service: Main process exited, code=exited, status=1/FAILURE
Dec 07 21:38:52 localhost systemd[1]: impermanence-root.service: Failed with result 'exit-code'.
Dec 07 21:38:52 localhost systemd[1]: Failed to start impermanence-root.service.
| 21:40:46 |
| @elvishjerricco:matrix.org | hmph, nothing useful in the journal. But that's definitely starting way too early | 21:41:15 |
| @hexa:lossy.network | yep | 21:41:36 |
| @elvishjerricco:matrix.org | You sure you put the right ordering constraint? | 21:41:41 |
| @hexa:lossy.network | no | 21:42:14 |
| @elvishjerricco:matrix.org | Search the journal for zfs-import, just to make sure you've got the name zfs-import-zpool.service correct | 21:42:43 |
| @hexa:lossy.network | Dec 07 21:38:58 nixos systemd[1]: zfs-import-zroot.service: Deactivated successfully.
| 21:42:46 |
| @elvishjerricco:matrix.org | zroot, not zpool? | 21:43:03 |
| @hexa:lossy.network | yes | 21:43:09 |
| @hexa:lossy.network | sometimes I also have zhome 🙂 | 21:43:19 |
| @elvishjerricco:matrix.org | You said earlier you used zfs-import-zpool.service, so that should be zfs-import-zroot.service | 21:43:34 |
| @hexa:lossy.network | oh boy | 21:43:46 |
| @hexa:lossy.network | rebooting | 21:43:50 |
| @hexa:lossy.network | works! 😄 | 21:45:13 |
| @hexa:lossy.network | thank you! | 21:46:34 |
| @elvishjerricco:matrix.org | whoo | 21:47:06 |
| @hexa:lossy.network | boot.initrd.systemd.services = {
impermanence-root = {
wantedBy = [
"initrd.target"
];
after = [
"zfs-import-zroot.service"
];
before = [
"sysroot.mount"
];
unitConfig.DefaultDependencies = "no";
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.zfs}/bin/zfs rollback -r zroot/local/root@blank";
};
};
};
| 21:47:35 |
| @elvishjerricco:matrix.org | hexa: looks good to me! | 21:51:39 |
| 8 Dec 2022 |
 @janne.hess:helsinki-systems.de | In reply to @hexa:lossy.network
boot.initrd.systemd.services = {
impermanence-root = {
wantedBy = [
"initrd.target"
];
after = [
"zfs-import-zroot.service"
];
before = [
"sysroot.mount"
];
unitConfig.DefaultDependencies = "no";
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.zfs}/bin/zfs rollback -r zroot/local/root@blank";
};
};
};
https://github.com/nix-community/impermanence/pulls ;) | 08:14:40 |
| @hexa:lossy.network | Related, yes | 08:20:06 |
| 11 Dec 2022 |
 @mlyx:matrix.org | https://github.com/NixOS/nixpkgs/blob/9f6f47f27cc0bff0aee003834e2c7d8a17c8d202/nixos/modules/system/boot/systemd/initrd.nix#L500
why use chroot not systemctl switch-root? | 21:55:06 |
| @janne.hess:helsinki-systems.de | Because that switches root rather than chrooting | 22:00:10 |
| @mlyx:matrix.org | I test that change chroot to systemctl --no-block switch-root /sysroot $closure/prepare-root can still boot. I really don't understand the difference. Could you please elaborate more details? | 22:43:35 |
| @mlyx:matrix.org | 
Download Snipaste_2022-12-11.png | 22:43:35 |
| 12 Dec 2022 |
| @elvishjerricco:matrix.org | mlyx: We do use systemctl switch-root in initrd-switch-root.service. Whereas initrd-nixos-activation.service is just meant to prepare the file system to be used as the nixos root | 03:29:26 |
