Hi, Tomas Volf <~@wolfsden.cz> skribis:
> Sure, I am willing to do my part. I managed to find this blog post[0], so > after > some minor troubles I did manage to get a VM with GNU/Hurd running. Next I > will > read up on copy_file_range and try to put together a patch. It’s really just (service hurd-vm-service-type) on Guix System: https://guix.gnu.org/manual/devel/en/html_node/Virtualization-Services.html#The-Hurd-in-a-Virtual-Machine > Just to make sure, your idea here is exactly what? Always try to use > copy_file_range before the regular copy? So the flow would be > > For 'always case: > > CoW ---fail--> FAIL > > For 'auto case: > > CoW ---fail--> copy_file_range ---fail--> current copy ---fail--> > FAIL > > For 'never case: > > copy_file_range ---fail--> current copy ---fail--> FAIL > > Is that an accurate summary? Yes, that’s exactly what I had in mind. Actually it might be better to use sendfile(2), which is slightly less generic but otherwise equivalent AFAICS, and which happens to have a Hurd implementation in glibc. Thanks for your help! Ludo’.
