- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - OpenVMS
- >
- Re: NFS shows modified revision date on directory
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-09-2009 04:44 AM
тАО02-09-2009 04:44 AM
I have node N1 with directory D1.
It is served via NFS to node N2.
When I do a dir/fu of D1 on N1 (so, not via NFS) it shows revision date somewhere 2007. Which is exact.
When I do a dir/fu on N2 (via NFS) it shows a date of maximum 15 secs ago.
If I do a dir on N2 every second, I see that the revision date changes every 15 seconds.
When I don't do anything on either node, the NFS server process does nothing (so, it's not changing the revision date).
Why ???
Wim
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-09-2009 07:00 AM
тАО02-09-2009 07:00 AM
Re: NFS shows modified revision date on directory
Purely Personal Opinion
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-09-2009 01:01 PM
тАО02-09-2009 01:01 PM
Re: NFS shows modified revision date on directory
See "Revision date moves backwards" and such in:
DEC-AXPVMS-VMS731_F11X-V0300--4.PCSI
I didn't specifically check for V7.3, but I'd expect the same issue there.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-10-2009 04:17 AM
тАО02-10-2009 04:17 AM
Re: NFS shows modified revision date on directory
http://ftp.uma.es/Vms/parches/v7.3/VMS73_F11X-V0200.txt exists but I doubt that this is the reason. The description doesn't match (as most of the time it's vague).
Wim
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-10-2009 12:40 PM
тАО02-10-2009 12:40 PM
SolutionOn OpenVMS, the modification date of an ODS-2 directory does not get updated every time a file is created or removed. That can lead to an unfortunate scenario. Someone creates a new file, but an NFS client can't see it because the client still has an old view of the directory and won't reload because of the timestamp.
The solution is for the NFS server to report the current time, or close to it, as the directory modification time. That way, NFS clients will realize they need to reread the directory, and they will be able to see newly-created files. As you noticed, it also means the directory will be unnecessarily re-read sometimes, but that's the price to be paid for correct behavior.
- Mark
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-11-2009 03:43 AM
тАО02-11-2009 03:43 AM
Re: NFS shows modified revision date on directory
Wim