RUMPFS(4) |
Kernel Interfaces Manual |
RUMPFS(4) |
NAME
rumpfs — rump kernel root file system
LIBRARY
rump kernel (librumpvfs, -lrumpvfs)
DESCRIPTION
rumpfs is a simple in-memory file system for rump kernels. It is automatically mounted as the root file system of a rump kernel at boot time, provided that the VFS faction is configured into the rump kernel instance.
The three main features of rumpfs are:
-
providing a hook for accessing host files via the rump_etfs(3) interfaces.
-
supporting enough of file and directory interfaces to facilitate simple operations such as hosting config files or creating mount points.
-
being small and lightweight so as to keep a barebones rump kernel lightweight.
rumpfs is not intended for hosting large files or big directory hierarchies. If faced with such a use case, mounting a tmpfs file system inside the rump kernel is recommended.
HISTORY
rumpfs first appeared in NetBSD 6.0.