can't read superblock in a infinite " mount/umount" loop

[J. Bruce Fields]

On Wed, Oct 18, 2006 at 03:51:01PM +0200, Le Rouzic wrote:
> Using Linux version 2.6.18-rc6-CITI_NFS4_ALL-1 but it happens also with
> previous versions like 2.6.17-rc2, 
> we got quickly
> "can't read superblock"
> by running an infinite mount/umount loop

That's a known problem, probably not fixable; see, e.g.,

	http://marc.theaimsgroup.com/?l=linux-nfs&m=116115371832325&w=2

--b.