On Fri, 9 May 2025 at 09:36, Amir Goldstein <amir73il@xxxxxxxxx> wrote: > This is not the case with displaying conn, because lsof is not designed > to list fuse conn. > > Is there a way for userspace to get from conn to fuse server pid? Define "server pid". One such definition would be "A fuse server is a process that has an open file descriptor referring to a /dev/fuse instance." This definition allows a mapping between tasks and fuse connections to be established. Note that this is not a 1:1 mapping. Multiple processes could have the same fuse fd (or a clone) open and one process could have multiple different connections associated with it. This might be sufficient for lsof if it can find out the connection number from the fd. E.g. adding "fuse_connection: N" to fdinfo would work, I think. Thanks, Miklos