Red Hat Bugzilla – Bug 46705
NFS-exported directory from RH 7.1 to HP-UX 10.20 corrupted
Last modified: 2007-04-18 12:34:19 EDT
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:
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.
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.
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