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disko

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disko - declarative disk partitioning - https://github.com/nix-community/disko89 Servers

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2 Jul 2024
@colemickens:matrix.orgcolemickensI'm wondering if it makes sense to introduce a "skipDestroy" option to the module06:41:58
@colemickens:matrix.orgcolemickens(per-disk or vol or something maybe)06:42:09
@lassulus:lassul.uslassulushmm, this works only in the case where you would have the current existing structure defined in nix which lives on your disk? 06:42:49
@lassulus:lassul.uslassulusnot a very common usecase I would say06:42:55
@lassulus:lassul.uslassulusor you think just for the disk?06:43:08
@colemickens:matrix.orgcolemickensI'm not sure I followed - to recap, for first provision, I want to destroy/format, and then presumably update my disk-config.nix to say "okay, no longer run destroy on disk2". Since disk2 is going to persist as it's a hetzner volume.06:44:14
@colemickens:matrix.orgcolemickensdisk1 is just the ephemeral vm disk, so I always need it destroyed06:44:30
@colemickens:matrix.orgcolemickensIt might not be super duper common, but I feel like it's an interesting use-case. maybe :).06:44:56
@colemickens:matrix.orgcolemickensI guess.. I mean, I could just write my own destroy command and prepend it to my overriden diskoScript..06:45:50
@colemickens:matrix.orgcolemickensnice, that worked. wipefs'd + dd'd off the first 512M. seems to have left my /home contents.06:53:26
@lassulus:lassul.uslassulusyou can run the disko internal destroy command and just run it on the disks you want06:53:36
@colemickens:matrix.orgcolemickensI saw jq and bailed :) but yeah, I probably should just have done that06:54:04
@colemickens:matrix.orgcolemickensfor now this works, gotta figure out why this isn't playing nice with the arm64 version now.06:54:20
3 Jul 2024
@matthewcroughan:defenestrate.itmatthewcroughanIf vendor kernels are in use, it's easy to make the disk image builder stall18:24:34
@matthewcroughan:defenestrate.itmatthewcroughan
blikvm-v1-disko-images> UEFI firmware (version  built at 00:00:00 on Jan  1 1980)
blikvm-v1-disko-images> EFI stub: Decompressing Linux Kernel...
blikvm-v1-disko-images> EFI stub: Loaded initrd from LINUX_EFI_INITRD_MEDIA_GUID device path
blikvm-v1-disko-images> EFI stub: Generating empty DTB
blikvm-v1-disko-images> EFI stub: Exiting boot services...
18:24:36
@matthewcroughan:defenestrate.itmatthewcroughanhttps://github.com/nix-community/disko/commit/bb75ad0b1d5a63884586517920b9a189721fc54d18:28:34
@matthewcroughan:defenestrate.itmatthewcroughanThis commit was so much more problematic than I anticipated18:28:42
@matthewcroughan:defenestrate.itmatthewcroughanI should make it possible to override this 18:28:50
4 Jul 2024
@eyjhb:eyjhb.dkeyJhb left the room.10:58:18
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5 Jul 2024
@matthewcroughan:defenestrate.itmatthewcroughanAnyone wanna help?20:36:48
@matthewcroughan:defenestrate.itmatthewcroughan blikvm-v1-disko-images> qemu-system-aarch64: failed to load "/nix/store/d2vw2hx48nphic1n4xd8y43q5vdn4lfk-kernel-modules/vmlinuz.efi" 20:36:49
@matthewcroughan:defenestrate.itmatthewcroughanwhy would that happen..20:36:56
@matthewcroughan:defenestrate.itmatthewcroughanthis is me, trying to make my PR to make the image builder kernel configurable20:41:18
@matthewcroughan:defenestrate.itmatthewcroughanIt's quite a minimal PR 20:41:41
@matthewcroughan:defenestrate.itmatthewcroughan
diff --git a/lib/make-disk-image.nix b/lib/make-disk-image.nix
index a61e937..e1f7e36 100644
--- a/lib/make-disk-image.nix
+++ b/lib/make-disk-image.nix
@@ -10,7 +10,7 @@ let
   vmTools = pkgs.vmTools.override {
     rootModules = [ "9p" "9pnet_virtio" "virtio_pci" "virtio_blk" ] ++ nixosConfig.config.disko.extraRootModules;
     kernel = pkgs.aggregateModules
-      (with nixosConfig.config.boot.kernelPackages; [ kernel ]
+      (with nixosConfig.config.disko.imageBuilderKernelPackages; [ kernel ]
         ++ lib.optional (lib.elem "zfs" nixosConfig.config.disko.extraRootModules) zfs);
   };
   cleanedConfig = diskoLib.testLib.prepareDiskoConfig nixosConfig.config diskoLib.testLib.devices;
diff --git a/module.nix b/module.nix
index 8c8fbc3..e3fde41 100644
--- a/module.nix
+++ b/module.nix
@@ -10,6 +10,15 @@ let
 in
 {
   options.disko = {
+    imageBuilderKernelPackages = lib.mkOption {
+      type = lib.types.attrs;
+      description = ''
+        the kernel used when building disk images via make-disk-image.nix.
+        Useful when the config's kernel won't boot in the image-builder.
+      '';
+      default = config.boot.kernelPackages;
+      example = lib.literalExpression "pkgs.linuxPackages_testing";
+    };
     extraRootModules = lib.mkOption {
       type = lib.types.listOf lib.types.str;
       description = ''
20:41:59
@drsensor:matrix.org૮༼⚆︿⚆༽つ / wildan joined the room.20:46:17

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