PFS Recycle can be driven externally by two calls to pfsctl. The caller must be a superuser. This is supported for kernel-resident PFSs only; for PFSs that are running in a colony address space, cancel the space to recycle the PFS.

PFS Recycle refreshes the PFS load module after service has been applied. The kernel space does not terminate; the only way to refresh a kernel-resident PFS load module is for the PFS_Init task to exit. The PFS may have its own technique to accomplish this and the PFS_Init task can exit on its own at any time. PFS Recycle restarts the PFS, or the LFS issues a WTOR and waits for a reply before restarting the PFS. Refer to Termination considerations for details. These pfsctl commands coordinate the PFS's termination with the LFS so that calls into the PFS can be quiesced before the PFS_Init task exits.