Nix-collect-garbage is failling

Help
1

nix-collect-garbage is failling:

sudo nix-collect-garbage --delete-older-than 30d
[sudo] Mot de passe de pierre :
removing old generations of profile /nix/var/nix/profiles/system
removing old generations of profile /nix/var/nix/profiles/per-user/root/profile
removing old generations of profile /nix/var/nix/profiles/per-user/root/channels
removing old generations of profile /nix/var/nix/profiles/per-user/root/profile
removing old generations of profile /nix/var/nix/profiles/per-user/root/channels
finding garbage collector roots...
deleting garbage...
deleting '/nix/store/3nna4a37vlq67d8fqbp8khsh049kyw42-nixos-24.11'
1 store paths deleted, 0.00 MiB freed
error: reading directory '"/nix/store/3nna4a37vlq67d8fqbp8khsh049kyw42-nixos-24.11/nixos/pkgs/development/python-modules/pydash"': Bad message

What can I to resolve this issue?

I tried repair:

sudo nixos-rebuild switch --flake . --show-trace --repair

But it was not helping.

2

Try the nix-store --verify --check-contents command: nix-store --verify - Nix 2.28.1 Reference Manual

3

Everything appears to be OK:

$ nix-store --verify --check-contents
reading the Nix store...
checking path existence...
checking link hashes...
checking store hashes...

There are no other messages.

4

Hmm, do you still get the bad message error when you try to delete it with nix-collect-garbage? That’s a filesystem error, I guess perhaps whatever corruption is happening means the file cannot be deleted? May be a failing disk, make sure you have backups of anything important.

5

Yes, I was having an issue with my disk. I did a repair and the problem is now gone. :grinning: