Matthew C Aycock wrote: > I am poking around in nfs a little bit and I am curious as to where nfs > stores what it mount on the mount point. I know that its kept somewhere > because iostat can fish it out. Does it grab it as stored in NFS or in the > mnttab?
However, if you were asking where filesystems in general store info as to what is mounted over a mount-point, then the obvious place is the v_vfsmountedhere pointer in the vnode corresponding to the mount point: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/sys/vnode.h#238 which points to the VFS structure for the filesystem mounted-on that mount-point. Equally, the VFS structure has a pointer vfs_vnodecovered that points back to the vnode for the mount-point the filessystem is mounted over: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/sys/vfs.h#223 hope this helps. cheers, calum.
