On Wed, 28 Feb 2024 at 15:32, Jens Axboe <axboe@xxxxxxxxx> wrote: > > On 2/28/24 4:28 AM, Amir Goldstein wrote: > > Are fixed files visible to lsof? > > lsof won't show them, but you can read the fdinfo of the io_uring fd to > see them. Would probably be possible to make lsof find and show them > too, but haven't looked into that. Okay, that approach could be used with fuse as well. This isn't perfect, but we can think improving the interface for both. > > Do they get accounted in rlimit? of which user? > > The fixed file table is limited in size by RLIMIT_NOFILE by the user > that registers it. That's different for fuse as the server wouldn't register the whole file table in one go. The number of used slots could be limited by RLIMIT_NOFILE, I think. Thanks, Miklos