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add troubleshooting documentation for disko-install

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Jörg Thalheim 2024-07-11 23:59:03 +02:00 • committed by Jörg Thalheim
parent 50d5ccf733
commit 6a82a99399
1 changed files with 22 additions and 2 deletions

24
devdoc/hosts.md
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@ -100,8 +100,28 @@ $ /root/kexec/run
## Fix up broken installations with disko-install
```
nix run github:nix-community/disko#disko-install -- --mode mount --flake github:nix-community/infra/initrd-ssh#build02 --disk nvme0n1 /dev/nvme1n1 --disk nvme1n1 /dev/nvme0n1
Disko install allows to update nixos configuration with out re-formatting, if the `--mode` parameter is set to `mount`. This assumes that the file system is still intact. `--disk` may need to be adjusted according to the concrete disko configuration. i.e. disks during installation may have different names than later in the recovery system. Use lsblk or `/dev/disk/by-partlabel` to reason about which disk is which.
```console
$ ls -la /dev/disk/by-partlabel/
total 0
drwxr-xr-x 2 root root 120 Jul 11 21:45 .
drwxr-xr-x 11 root root 220 Jul 11 21:45 ..
lrwxrwxrwx 1 root root 15 Jul 11 21:45 disk-nvme0n1-boot -> ../../nvme1n1p1
lrwxrwxrwx 1 root root 15 Jul 11 21:45 disk-nvme0n1-ESP -> ../../nvme1n1p2
lrwxrwxrwx 1 root root 15 Jul 11 21:45 disk-nvme0n1-zfs -> ../../nvme1n1p3
lrwxrwxrwx 1 root root 15 Jul 11 21:45 disk-nvme1n1-zfs -> ../../nvme0n1p1
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 310.8M 0 loop /nix/.ro-store
loop1 7:1 0 36K 0 loop
nvme1n1 259:0 0 1.7T 0 disk
├─nvme1n1p1 259:3 0 1M 0 part
├─nvme1n1p2 259:4 0 1G 0 part
└─nvme1n1p3 259:5 0 1.7T 0 part
nvme0n1 259:1 0 1.7T 0 disk
└─nvme0n1p1 259:2 0 1.7T 0 part
$ nix run github:nix-community/disko#disko-install -- --mode mount --flake github:nix-community/infra#build02 --disk nvme0n1 /dev/nvme1n1 --disk nvme1n1 /dev/nvme0n1
```
### Debug VM