Difference between revisions of "Move Nix Store to new partition"
From NixOS Wiki
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The tutorial will teach you how to relocate `/nix` to a new | The tutorial will teach you how to relocate `/nix` to a new | ||
− | device. | + | device on non `NixOS` Hosts. A summery of how this could be done on nixOS is below |
+ | '''This has not been tested on NixOS''' but there may still be a way: | ||
+ | |||
+ | |||
+ | |||
+ | = On *BSD/Linux Host = | ||
The device that /nix is on has no more space | The device that /nix is on has no more space | ||
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$ sudo systemctl start nix-daemon.service | $ sudo systemctl start nix-daemon.service | ||
+ | = NixOS = | ||
+ | |||
+ | Add [https://github.com/cleverca22/nixos-configs/blob/master/rescue_boot.nix rescue-boot.nix] to your imports section. | ||
+ | |||
+ | nixos-rebuild (and pray you have ~300mb free on /boot/) | ||
+ | |||
+ | run the installer from grub at any time. | ||
+ | |||
+ | adjust your configuration.nix so it expects /nix to be at the new place, and nixos-rebuild boot, so it doesnt break after you move it | ||
+ | |||
+ | Now reboot and move it. | ||
[[Category:Tutorial]] | [[Category:Tutorial]] | ||
[[Category:NixOS]] | [[Category:NixOS]] |
Revision as of 21:47, 8 February 2019
The tutorial will teach you how to relocate `/nix` to a new device on non `NixOS` Hosts. A summery of how this could be done on nixOS is below This has not been tested on NixOS but there may still be a way:
On *BSD/Linux Host
The device that /nix is on has no more space
$ du -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 182G 180G 2G 99% /
Stop nix daemon
$ sudo systemctl stop nix-daemon.service
Move backup /nix; mv /nix to /nix.bak
$ ls -alF /nix total 1068 drwxr-xr-x 4 root root 4096 Jan 22 02:43 ./ drwxr-xr-x 26 root root 4096 Feb 8 12:17 ../ drwxrwxr-t 1555 root nixbld 1077248 Feb 8 12:05 store/ drwxr-xr-x 4 root root 4096 Jan 22 02:43 var/ $ cd / $ tar -afp /nix.tgz /nix /nix.bak $ sudo mv /nix /nix.bak # incase something goes horribly wrong
Mount new device. You will need to add this device to `/etc/fstab`
$ mount /nix $ du -h Filesystem Size Used Avail Use% Mounted on /dev/sdb1 300G 0G 300G 0% /nix
Restore /nix from /nix.tgz; verify contents
$ cd / $ sudo tar -xf /nix.tgz $ nix-store --verify --check-contents
Start up nixdaemon
$ sudo systemctl start nix-daemon.service
NixOS
Add rescue-boot.nix to your imports section.
nixos-rebuild (and pray you have ~300mb free on /boot/)
run the installer from grub at any time.
adjust your configuration.nix so it expects /nix to be at the new place, and nixos-rebuild boot, so it doesnt break after you move it
Now reboot and move it.