Difference between revisions of "Move Nix Store to new partition"
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Appetrosyan (talk | contribs) m (Formatting fixes) |
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| − | The tutorial will teach you how to relocate | + | The tutorial will teach you how to relocate {{ic|/nix}} to a new |
| − | device on non | + | 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: | '''This has not been tested on NixOS''' but there may still be a way: | ||
| Line 9: | Line 9: | ||
The device that /nix is on has no more space | The device that /nix is on has no more space | ||
| − | + | <syntaxhighlight lang="console"> | |
| − | + | $ du -h | |
| − | + | Filesystem Size Used Avail Use% Mounted on | |
| − | + | /dev/sda1 182G 180G 2G 99% / | |
| + | </syntaxhighlight> | ||
Stop nix daemon | Stop nix daemon | ||
| − | + | <syntaxhighlight lang="console"> | |
| + | $ sudo systemctl stop nix-daemon.service | ||
| + | </syntaxhighlight> | ||
| + | Move backup /nix; mv /nix to /nix.bak | ||
| − | + | <syntaxhighlight lang="console"> | |
| + | $ 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/ | ||
| + | </syntaxhighlight> | ||
| − | + | <syntaxhighlight lang="console"> | |
| − | + | $ cd / | |
| − | + | $ tar -afp /nix.tgz /nix /nix.bak | |
| − | + | $ sudo mv /nix /nix.bak # in case something goes horribly wrong | |
| − | + | </syntaxhighlight> | |
| − | |||
| − | |||
| − | |||
| − | |||
Mount new device. You will need to add this device to `/etc/fstab` | Mount new device. You will need to add this device to `/etc/fstab` | ||
| − | + | <syntaxhighlight lang="console"> | |
| − | + | $ mount /nix | |
| − | + | $ du -h | |
| − | + | Filesystem Size Used Avail Use% Mounted on | |
| − | + | /dev/sdb1 300G 0G 300G 0% /nix | |
| + | </syntaxhighlight> | ||
Restore /nix from /nix.tgz; verify contents | Restore /nix from /nix.tgz; verify contents | ||
| − | + | <syntaxhighlight lang="console"> | |
| − | + | $ cd / | |
| − | + | $ sudo tar -xf /nix.tgz | |
| − | + | $ nix-store --verify --check-contents | |
| − | + | </syntaxhighlight> | |
| − | + | Start {{ic|nix-daemon}} | |
| + | <syntaxhighlight lang="console"> | ||
| + | $ sudo systemctl start nix-daemon.service | ||
| + | </syntaxhighlight> | ||
= NixOS = | = NixOS = | ||
| Line 54: | Line 65: | ||
run the installer from grub at any time. | 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 | + | adjust your configuration.nix so it expects {{ic|/nix}} to be at the new place, and nixos-rebuild boot, so it doesnt break after you move it |
Now reboot and move it. | Now reboot and move it. | ||
Revision as of 08:58, 3 June 2021
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 # in case 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 nix-daemon
$ 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.