Hi, another...@gmail.com (Nicolò Balzarotti) skribis:
> #+begin_src bash :results list > # This is the broken system > guix gc --verify=repair,contents > #+end_src > > > #+RESULTS: > - reading the store... > - checking path existence... > - checking hashes... > > And nothing else. So, let's check the hash In particular, you should compare the actual hash returned by “guix hash -r” with that stored in the local database. If they match, then the store item is not considered corrupt. > The manual also suggests this command: > > #+begin_src bash :results table :dir /sudo:localhost: > # This is the broken system > guix build --repair libxft > #+end_src You should pass ‘--no-grafts’ if you want to repair the ungrafted variant. > #+begin_src sqlite :eval never > select * from ValidPaths where path = > "/gnu/store/mwfb8a9mkcn65nfnsnvj39xly9d8qa90-libxft-2.3.3"; > #+end_src > > > #+RESULTS: > | 24700 | /gnu/store/mwfb8a9mkcn65nfnsnvj39xly9d8qa90-libxft-2.3.3 | > sha256:2e3ddbf0882e7d70ee67808b998f1ba9ddeffbefc6efe6252d7b67ad3ab1dd21 | > 1579715645 | /gnu/store/ajkyhj4qsbzw7kqc4wp9yfzci7r5xgyy-libxft-2.3.3.drv | > 10104 | So that’s indeed different from what “guix hash -r” returned: --8<---------------cut here---------------start------------->8--- scheme@(guile-user)> ,use(guix base32) scheme@(guile-user)> ,use(guix base16) scheme@(guile-user)> (bytevector->base16-string (nix-base32-string->bytevector "12lx9ar5vb2l4dwgw1cfjqyrfscca4rs6vmnxnza7l8qys97zps3")) $5 = "43df7f92f618d1a3beedb66ea333518c69973d968e05fe782354ac5db24a9d8a" --8<---------------cut here---------------end--------------->8--- Thus, ‘guix gc --verify=contents’ should report it as corrupt. > #+begin_src bash :eval never > sudo mount -o remount,rw /gnu/store > echo "hello" > > /gnu/store/mwfb8a9mkcn65nfnsnvj39xly9d8qa90-libxft-2.3.3/lib/libXft.so.2.3.3 > guix build --repair libxft > #+end_src > > > Results: > > #+begin_example > path `/gnu/store/mwfb8a9mkcn65nfnsnvj39xly9d8qa90-libxft-2.3.3' is corrupted > or missing! > applying 2 grafts for > /gnu/store/ajkyhj4qsbzw7kqc4wp9yfzci7r5xgyy-libxft-2.3.3.drv... > grafting '/gnu/store/844ngi6h6icrc3kkmxc1rni4pvwijhzg-libxft-2.3.3' -> > '/gnu/store/mwfb8a9mkcn65nfnsnvj39xly9d8qa90-libxft-2.3.3'... > successfully built > /gnu/store/ajkyhj4qsbzw7kqc4wp9yfzci7r5xgyy-libxft-2.3.3.drv > /gnu/store/mwfb8a9mkcn65nfnsnvj39xly9d8qa90-libxft-2.3.3 > #+end_example This seems good, no? I guess we need tests for the repair functionality (repairing itself is currently untested for the reasons explained in tests/store.scm:901, but we could arrange to test it somehow.) Thanks, Ludo’.
