messed-up-mdadm-ids

[root@nixos:/]# cat etc/fstab 
# This is a generated file.  Do not edit!
#
# To make changes, edit the fileSystems and swapDevices NixOS options
# in your /etc/nixos/configuration.nix file.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>

# Filesystems.
/dev/md/root / ext4 defaults 0 1


# Swap devices.
/dev/mapper/cryptedswap none swap defaults


[root@nixos:/]# ls -la /dev/md
total 0
drwxr-xr-x  2 root root   60 Dec  6 10:35 .
drwxr-xr-x 18 root root 3400 Dec  6 10:35 ..
lrwxrwxrwx  1 root root    8 Dec  6 10:35 nixos:root -> ../md127