Bug 759000 - NFS: does not allow time stamp before epoch
Summary: NFS: does not allow time stamp before epoch
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.8
Hardware: All
OS: Linux
unspecified
low
Target Milestone: rc
: ---
Assignee: Jeff Layton
QA Contact: Filesystem QE
URL:
Whiteboard:
Depends On:
Blocks: 996548
TreeView+ depends on / blocked
 
Reported: 2011-12-01 08:03 UTC by Eryu Guan
Modified: 2014-06-18 07:42 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 996548 (view as bug list)
Environment:
Last Closed: 2013-08-13 12:26:16 UTC
Target Upstream Version:

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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.
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