>Number:         11731
>Category:       kern
>Synopsis:       getdents(2) doesn't work right on unionfs w/nfs lower layer
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Dec 13 16:25:00 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     Dave Huang
>Release:        NetBSD 1.5N as of December 12, 2000
>Organization:
Name: Dave Huang     |   Mammal, mammal / their names are called /
INet: khym@bga.com   |   they raise a paw / the bat, the cat /
FurryMUCK: Dahan     |   dolphin and dog / koala bear and hog -- TMBG
Dahan: Hani G Y+C 25 Y++ L+++ W- C++ T++ A+ E+ S++ V++ F- Q+++ P+ B+ PA+ PL++
>Environment:
	
System: NetBSD dahan.metonymy.com 1.5N NetBSD 1.5N (SPIFF) #0: Wed Dec 13 17:58:06 CST 2000 khym@dahan.metonymy.com:/usr/obj.i386/SPIFF i386


>Description:
	getdents(2) doesn't show files/directories that exist only in
the lower layer of a unionfs if the lower layer is a NFS filesystem.
However, they're actually there, and can be opened, cd'd into, etc...

>How-To-Repeat:
dahan ~# df /usr2 /tmp/upper
Filesystem     1K-blocks     Used    Avail Capacity  Mounted on
yerfable:/usr2  44666858 10251631 32181884    24%    /usr2
/dev/sd0a          30733    22172     7024    75%    /
dahan ~# ls -aF /tmp/upper
./  ../
dahan ~# ls -aF /usr2
./         home/      pkgsrc/    testfile
../        obj.alpha/ songs/     win/
dahan ~# cat /usr2/testfile
hi, this is a test file
dahan ~# mount -t union -o -b /usr2 /tmp/upper
Filesystem     1K-blocks     Used    Avail Capacity  Mounted on
yerfable:/usr2  44666858 10251631 32181884    24%    /usr2
<below>:/usr2    1893756  1885195     7024    99%    /tmp/upper
dahan ~# ls -aF /tmp/upper
./  ../
dahan ~# cd /tmp/upper
dahan /tmp/upper# cat testfile
hi, this is a test file
dahan /tmp/upper# cd home
dahan /tmp/upper/home# cd ..
dahan /tmp/upper# ls -aF
./    ../   home/

>Fix:
No idea...
>Release-Note:
>Audit-Trail:
>Unformatted: