Subject: kern/8270: union lookup no longer works w/ fdesc file system
To: None <gnats-bugs@gnats.netbsd.org>
From: Jason R Thorpe <thorpej@nas.nasa.gov>
List: netbsd-bugs
Date: 08/24/1999 15:20:51
>Number:         8270
>Category:       kern
>Synopsis:       union lookup no longer works w/ fdesc file system
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 24 15:20:00 1999
>Last-Modified:
>Originator:     
>Organization:
Numerical Aerospace Simulation Facility - NASA Ames
>Release:        NetBSD 1.4K, Tue Aug 24 15:04:45 PDT 1999
>Environment:
	
System: NetBSD bishop 1.4K NetBSD 1.4K (BISHOP) #763: Tue Aug 24 14:19:31 PDT 1999 thorpej@bishop:/amd/dracul/u2/netbsd/src/sys/arch/alpha/compile/BISHOP alpha


>Description:
	Mounting the fdesc file system with `-o union' over /dev used
	to result in a union lookup of the fdesc file system on top and
	the underlying root file system underneath.  However, this has
	broken recently; only the fdesc file systems appears, leading
	to untold lossage once it is mounted.

>How-To-Repeat:
	This following in your /etc/fstab:

	fdesc           /dev            fdesc   rw,-o=union     0 0
>Fix:
	Unknown.
>Audit-Trail:
>Unformatted: