Bug 46705

Summary:	NFS-exported directory from RH 7.1 to HP-UX 10.20 corrupted
Product:	[Retired] Red Hat Linux	Reporter:	Stephen Walton <stephen.walton>
Component:	nfs-server	Assignee:	Steve Dickson <steved>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.1
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-09-01 18:24:55 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Stephen Walton 2001-06-29 22:53:39 UTC

From Bugzilla Helper:
User-Agent: Mozilla/4.77 [en] (X11; U; Linux 2.2.19-6.2.7 i686)

Description of problem:
I installed RH 7.1 on two systems;  on one it was a clean re-install
complete with disk format, on the other it was an update to a working 6.2
system.  On both systems, I see a very strange result when exporting to an
HP-UX 10.20 system.  Suppose my system is called 'redhat' and I export /usr
to my HP-UX system.  On the HP-UX system I do:

# mkdir /redhatusr
# mount redhat:/usr /redhatusr
# cd /redhatusr
# ls
[see directory listing]
# pwd
/redhatusr
# cd man
# ls
[again see directory listing]
# pwd
/man

Notice the stripping of the leading directory path element on the pwd
command.  I can fix the problem by backing up to the 2.2 kernel,
specifically 2.2.19-6.2.7, so this is definitely a new bug at 2.4.2.

How reproducible:
Always

Steps to Reproduce:
1. Install RH 7.1.
2. Export a directory via NFS to an HP-UX system.
3. NFS-mount the RH directory on the HP system.
4. cd to a subdirectory of the NFS mount and do 'pwd'.
	

Additional info:

Comment 1 Stephen Walton 2001-07-05 18:47:58 UTC

I have additional information to add to this report:

1.  The reported behavior only occurs when the 'pwd' command is issued from
within tcsh.  It doesn't appear to do it when the command is typed from within
/bin/sh on HP-UX (which is the Posix shell).  But the behavior recurs when a
simple C program is written to print the result of the 'getwd' system call.

2.  The behavior does not occur when the mount is forced to be NFSv2.

Comment 2 Matthew Temple 2001-11-30 17:18:10 UTC

This same behavior is found when mounting an nfs filesystem residing on a RH7.2
system
to an IRIX 6.5 system.   It can also be fixed by forcing a mount using version 2
nfs
protocols from the irix computer.

Comment 3 Steve Dickson 2004-09-01 18:24:55 UTC

I have not heard of this being a problem in the
later kernels (like the ones in Fedora Core 1 and 2)
Please try those and reopen if necessary