Bug 759000

Summary:	NFS: does not allow time stamp before epoch
Product:	Red Hat Enterprise Linux 5	Reporter:	Eryu Guan <eguan>
Component:	kernel	Assignee:	Jeff Layton <jlayton>
Status:	CLOSED WONTFIX	QA Contact:	Filesystem QE <fs-qe>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	5.8	CC:	jlayton, nfs-maint, rwheeler, steved
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	996548 (view as bug list)		Environment:
Last Closed:	2013-08-13 12:26:16 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:
Bug Blocks:	996548

Description Eryu Guan 2011-12-01 08:03:16 UTC

Description of problem:
Touch a file with time stamp before epoch in NFS mount, eg. touch -t 196001010101 /mnt/nfs/testfile, NFS will store the time as 2096-02-06 07:29:16.000000000

Version-Release number of selected component (if applicable):
kernel-2.6.18-299.el5

How reproducible:
always

Steps to Reproduce:
1. mount -t nfs localhost:/nfsexport /mnt/nfs
2. touch -t 196001010101 /mnt/nfs/testfile
3. stat /mnt/nfs/testfile or stat /nfsexport/testfile
  
Actual results:
[root@ibm-x3550m3-05 ~]# stat /mnt/nfs/testfile
  File: `/mnt/nfs/testfile'
  Size: 0               Blocks: 0          IO Block: 1048576 regular empty file
Device: 19h/25d Inode: 1186558     Links: 1
Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2096-02-06 07:29:16.000000000 -0500
Modify: 2096-02-06 07:29:16.000000000 -0500
Change: 2011-12-01 01:21:54.885728294 -0500

Expected results:
time stamp before epoch
Access: 1960-01-01 01:01:00.000000000 -0500
Modify: 1960-01-01 01:01:00.000000000 -0500
Change: 2011-12-01 01:21:19.648699182 -0500

Additional info:
RHEL6 also has this issue

Comment 2 Jeff Layton 2013-08-13 02:06:32 UTC

Meh, it's probably worth fixing and doing so appears to be trivial. We just need to backport:

commit 042ad0b398ea4e937e38324dd096bdf9d2c495f7
Author: Bryan Schumaker <bjschuma>
Date:   Fri Apr 19 16:09:37 2013 -0400

    nfs: Send atime and mtime as a 64bit value

Comment 3 Jeff Layton 2013-08-13 12:17:58 UTC

I just noticed that this is a RHEL5 bug. Yeah, I don't see a good case for fixing this there, I'll close this one WONTFIX but clone it for RHEL6.

Comment 4 RHEL Program Management 2013-08-13 12:26:16 UTC

Development Management has reviewed and declined this request.
You may appeal this decision by reopening this request.