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Re: How to delete system generations?
From: |
Ludovic Courtès |
Subject: |
Re: How to delete system generations? |
Date: |
Sun, 08 Jan 2017 21:50:22 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) |
Hello,
huang ying <address@hidden> skribis:
> For package, there is
>
> $ guix package --delete-generations
>
> But, for system, I don't find similar stuff? Is there something for that?
Not yet! But you can run:
sudo rm /var/guix/profiles/system-123-link
to delete generation 123. Be careful to choose the right number!
> I need that because I found the contents of the following store item is
> invalid,
>
> /gnu/store/s9mrff47jfp9b3bhgv59q2kzwbmi6rl8-fatfsck-static-4.0
>
> $ ls -l /gnu/store/s9mrff47jfp9b3bhgv59q2kzwbmi6rl8-fatfsck-static-4.0/sbin
> total 0
> -r-xr-xr-x 1 root root 0 Jan 1 1970 fsck.fat
> lrwxrwxrwx 4 root root 8 Jan 1 1970 fsck.vfat -> fsck.fat
How do you know it’s invalid?
> I want to regenerate it and the initrd. But I don't know how. One
> way is to delete all generations depends on it, gc it, then regenerate
> it. But I don't know how to delete system generations.
>
> Or is there some other way to work around this?
When the store is corrupt, you can run ‘guix gc --verify=contents,repair’:
https://www.gnu.org/software/guix/manual/html_node/Invoking-guix-gc.html
That will check the integrity of each item in /gnu/store (thus it’s very
I/O-intensive and can take a lot of time) and, if it finds a corrupt
item, will try to fetch a substitute to replace it. That’s really a
last resort, though.
HTH,
Ludo’.