[Nix-dev] Broken nix database/store.

[Layus]

Hi,

Due to a wrong manipulation when activating dir_index on my root 
partition, I have now plenty of live orphaned paths in my store (about 
5G) like this one:

|$ nix-store -q --referrers-closure 
/nix/store/4zhkw0g564g3ljdpnn8j5krrsvcxildn-libXcomposite-0.4.4.tar.bz2 
/nix/store/4zhkw0g564g3ljdpnn8j5krrsvcxildn-libXcomposite-0.4.4.tar.bz2 
$ nix-store --delete 
/nix/store/4zhkw0g564g3ljdpnn8j5krrsvcxildn-libXcomposite-0.4.4.tar.bz2 
finding garbage collector roots... error: cannot delete path 
‘/nix/store/4zhkw0g564g3ljdpnn8j5krrsvcxildn-libXcomposite-0.4.4.tar.bz2’ since 
it is still alive 0 store paths deleted, 0.00 MiB freed $ nix-store 
--delete --ignore-liveness 
/nix/store/4zhkw0g564g3ljdpnn8j5krrsvcxildn-libXcomposite-0.4.4.tar.bz2 
error: you are not allowed to ignore liveness 0 store paths deleted, 
0.00 MiB freed $ sudo nix-store --delete 
/nix/store/4zhkw0g564g3ljdpnn8j5krrsvcxildn-libXcomposite-0.4.4.tar.bz2 
finding garbage collector roots... error: cannot delete path 
‘/nix/store/4zhkw0g564g3ljdpnn8j5krrsvcxildn-libXcomposite-0.4.4.tar.bz2’ since 
it is still alive 0 store paths deleted, 0.00 MiB freed $ sudo nix-store 
--delete --ignore-liveness 
/nix/store/4zhkw0g564g3ljdpnn8j5krrsvcxildn-libXcomposite-0.4.4.tar.bz2 
finding garbage collector roots... deleting 
‘/nix/store/4zhkw0g564g3ljdpnn8j5krrsvcxildn-libXcomposite-0.4.4.tar.bz2’ deleting 
‘/nix/store/trash’ deleting unused links... note: currently hard linking 
saves 1754.97 MiB 1 store paths deleted, 0.27 MiB freed |

Is there some repair command to update liveness of paths ?

nix-store --verify --check-contents --repair finds nothing useful.

Regards,
-- Layus.

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