Advertisement

04.30.2003 at 12:18PM PDT, ID: 20601718
[x]
Attachment Details
[x]
The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

  • The Grade of the Solution
  • The Zone Rank of the Expert Providing the Solution
  • The Number of Author and Expert Comments
  • The Number of Experts Contributing
  • The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!

Large files in UNIX

Zone: Unix Setup
Tags: large, file, unix
Hi,
  I am new to UNIX Sys Admin. My question is does UNIX OS allows files greater than 2GB. Or is it necessary to enable large files support. If large file support need to be enabled can somebody tell me how to enable this ?

Thanks

Anand
Start your free trial to view this solution
Question Stats
Zone: OS
Question Asked By: and_deva
Solution Provided By: PsiCop
Participating Experts: 9
Solution Grade: A
Views: 112
Translate:
Loading Advertisement...
04.30.2003 at 01:15PM PDT, ID: 8431266

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
04.30.2003 at 06:12PM PDT, ID: 8432808

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
05.01.2003 at 07:16AM PDT, ID: 8435749

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
05.01.2003 at 07:33AM PDT, ID: 8435855

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
05.01.2003 at 08:28AM PDT, ID: 8436290

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
05.02.2003 at 03:22AM PDT, ID: 8443725

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
05.05.2003 at 07:33AM PDT, ID: 8462072

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
05.05.2003 at 02:55PM PDT, ID: 8465308

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
05.09.2003 at 03:19PM PDT, ID: 8497488

Rank: Master

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
05.12.2003 at 06:03AM PDT, ID: 8508690

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
05.27.2003 at 08:48AM PDT, ID: 8591167

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
07.13.2003 at 04:17AM PDT, ID: 8911762

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
07.14.2003 at 06:44AM PDT, ID: 8917009

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
08.18.2003 at 06:41AM PDT, ID: 9173380

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
08.18.2003 at 08:09AM PDT, ID: 9174070

Rank: Master

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
08.18.2003 at 10:25PM PDT, ID: 9178695

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
10.01.2003 at 09:31AM PDT, ID: 9467977

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
10.01.2003 at 11:44AM PDT, ID: 9468868

Rank: Master

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
10.01.2003 at 11:49AM PDT, ID: 9468909

All comments and solutions are available to Premium Service Members only.

Start your 7-day free trial and see for yourself why Experts Exchange is the easiest and most proven technology resource in the world. Get Started

Already a member? Login to view this solution.

 
 
Loading Advertisement...
Microsoft
  • Internet Protocols
  • Applications
  • Development
  • OS
  • Hardware
  • Windows Security
Apple
  • Operating Systems
  • Hardware
  • Programming
  • Networking
  • Software
Internet
  • Search Engines
  • File Sharing
  • WebTrends / Stats
  • Spy / Ad Blockers
  • Web Browsers
  • New Net Users
  • Web Development
  • Chat / IM
  • Anti Spam
  • Web Servers
  • Anti-Virus
  • Email Clients
Gamers
  • Tips
  • Online / MMORPG
  • Puzzle
  • Emulators
  • Action / Adventure
  • Role Playing
  • Consoles
  • Game Programming
  • Strategy
  • Sports
  • Misc
  • Computer Games
Digital Living
  • Hardware
  • Automotive
  • New Net Users
  • New Users
  • Software
  • Digital Music
  • Gaming World
  • Home Security
  • Apple
  • Networking Hardware
Virus & Spyware
  • Vulnerabilities
  • IDS
  • Encryption
  • Anti-Virus
  • Operating Systems Security
  • Software Firewalls
  • WebApplications
  • Cell Phones
  • Operating Systems
  • Internet
  • Hardware Firewalls
Hardware
  • Displays / Monitors
  • Handhelds / PDAs
  • Components
  • Peripherals
  • Laptops/Notebooks
  • Servers
  • Misc
  • Apple
  • Embedded Hardware
  • Networking Hardware
  • Storage
  • Desktops
  • New Users
Software
  • System Utilities
  • Industry Specific
  • Network Management
  • Photos / Graphics
  • Page Layout
  • VMware
  • Misc
  • Web Development
  • OS
  • CYGWIN
  • Voice Recognition
  • Virtualization
  • Message Queue
  • Quality Assurance
  • Security
  • Firewalls
  • MultiMedia Applications
  • Development
  • Database
  • Office / Productivity
  • Business Management
  • OS/2 Apps
  • Server Software
  • Internet / Email
ITPro
  • OS
  • Storage
  • Encryption
  • Operating Systems Security
  • Apple Hardware
  • Laptops & Notebooks
  • Servers
  • Networking Hardware
  • Peripherals
  • Devices
  • Displays / Monitors
  • WebTrends / Stats
  • Search Engines
  • Firewalls
  • Web Computing
  • WebApplications
  • IDS
  • Vulnerabilities
  • Email Clients
  • File Sharing
  • Spy / Ad Blockers
  • Web Browsers
  • Web Servers
  • Networking
  • Anti-Virus
  • Consulting
  • Chat / IM
  • Anti Spam
Developer
  • Web Servers
  • Web Browsers
  • Game Programming
  • Dev Tools
  • Industry Specific
  • Office / Productivity
  • Database
  • CYGWIN
  • Web Development
  • Search Engines
  • File Sharing
  • WebTrends / Stats
  • Programming
  • Content Management
  • Application Servers
  • Protocols
Storage
  • Removable Backup Media
  • Storage Technology
  • Servers
  • Grid
  • Remote Access
  • Backup / Restore
  • Misc
  • Hard Drives
OS
  • Miscellaneous
  • Security
  • Development
  • Linux
  • VMware
  • MainFrame OS
  • Unix
  • Apple
  • OS / 2
  • AS / 400
  • BeOS
  • Microsoft
  • VMS / OpenVMS
Database
  • Oracle
  • Miscellaneous
  • MySQL
  • Software
  • Sybase
  • Contact Management
  • PostgreSQL
  • Data Manipulation
  • Clarion
  • InterSystems Cache
  • Siebel
  • MUMPS
  • OLAP
  • SQLBase
  • SAS
  • GIS & GPS
  • 4GL
  • Berkeley DB
  • DB2
  • Informix
  • Interbase / Firebird
  • FoxPro
  • Reporting
  • LDAP
  • Filemaker Pro
  • MS SQL Server
  • dBase
  • MS Access
Security
  • Misc
  • Web Browsers
  • Software Firewalls
  • Operating Systems Security
  • File Sharing
  • Spy / Ad Blockers
  • Vulnerabilities
  • WebApplications
  • IDS
  • Anti-Virus
  • Encryption
  • Anti Spam
  • Email Clients
  • VPN
  • Chat / IM
Programming
  • Editors IDEs
  • Installation
  • Handhelds / PDAs
  • Multimedia Programming
  • System / Kernel
  • Automation
  • Algorithms
  • Game
  • Signal Processing
  • Project Management
  • Open Source
  • Database
  • Misc
  • Languages
  • Processor Platforms
  • Theory
Web Development
  • Scripting
  • Blogs
  • Web Servers
  • Software
  • Search Engines
  • Web Graphics
  • Web Services
  • Images
  • Internet Marketing
  • Images and Photos
  • Components
  • Document Imaging
  • Web Languages/Standards
  • Illustration
  • WebApplications
  • Fonts
  • WebTrends / Stats
  • Authoring
  • Digital Camera Software
  • Miscellaneous
Networking
  • Protocols
  • Apple Networking
  • Network Management
  • Message Queue
  • Application Servers
  • Content Management
  • File Servers
  • Email Servers
  • Misc
  • Java Editors & IDEs
  • Wireless
  • Networking Hardware
  • Backup / Restore
  • System Utilities
  • ISPs & Hosting
  • Web Servers
  • Storage Technology
  • Removable Backup Media
  • Servers
  • Web Computing
  • Broadband
  • Grid
  • OS / 2
  • Novell Netware
  • Unix Networking
  • Windows Networking
  • Security
  • Telecommunications
  • Operating Systems
  • Linux Networking
Other
  • Lounge
  • Business Travel
  • Community Support
  • New Net Users
  • Philosophy / Religion
  • Math / Science
  • Miscellaneous
  • URLs
  • Expert Lounge
  • Politics
  • Puzzles / Riddles
  • Automotive
Community Support
  • Suggestions
  • New to EE
  • New Topics
  • CleanUp
  • Announcements
  • General
  • Feedback
  • Input
  • EE Bugs
 
04.30.2003 at 01:15PM PDT, ID: 8431266
Depends on the flavor of *NIX.

Recent versions of Solaris, for example, do support files over 2 GB in size (support is enabled by default, but can be explicitly disabled).

The answer for other flavors of *NIX may be different. YOu didn't bother to specify which flavor, so giving a definite answer is kinda hard.
 
04.30.2003 at 06:12PM PDT, ID: 8432808
On HP-UX 11.0, large file support needs to be specified when you create (newfs) the filesystem AND must be specified in /etc/fstab for when the filesystem is mounted.
 
05.01.2003 at 07:16AM PDT, ID: 8435749
To answer more generally, most oversions of *ix shipped within the last five years have this support. But the exact answer to the question of whether you can actually do this on your system depends on a) just how old the OS is and b) whether you have big-file support turned on for the particular filesystem (needed in at least some *ix flavors).

When you post the exact OS version we can dig deeper.
 
05.01.2003 at 07:33AM PDT, ID: 8435855
Thanks all for your replies.
I have a HP-UX 10.20B a Solaris 7 and Red Hat 7.3 Linux(2.18 Kernel version).

Which of these supports large files ? And How do I find out whether they support large files or not and if not how do I configure such a support (if possible).

Thanks

Anand
 
05.01.2003 at 08:28AM PDT, ID: 8436290
A quick way to check on a particular version would be to use the man page for the mount command. e.g. "man mount"

Look at the various options and see what it says about large file support.

I'm fairly sure that Solaris v2.7 supports large files, altho I'm not sure if it is enabled by default.
Accepted Solution
 
05.02.2003 at 03:22AM PDT, ID: 8443725
HP-UX 10.20: largefiles are supported on hfs and vxfs filesystems (`man mount_hfs` and `man mount_vxfs`) but the default is _no_ large files.

If you're NFS mounting these filesystems between servers, I suspect you also need to check the NFS server & client software support largefiles

 
05.05.2003 at 07:33AM PDT, ID: 8462072
Solaris 9 supports large file systems.  

For the most part, most unix operating systems do support it (even under most 32 bit versions like Linux).  Some OS's may have to play some tricks to support it but they can.

On most server class systems Sun's, HP, IBM,...they have no problem supporting over 2 GB since most of their clients probably have filesystems in the 100 GB - 1 Terabyte range.
 
05.05.2003 at 02:55PM PDT, ID: 8465308
Following are ways to enable the largefiles (to permit files larger than 2 gigabytes to be created) option for a  

With mkfs command:

# mkfs -F ufs -o largefiles /dev/rdsk//
 
05.09.2003 at 03:19PM PDT, ID: 8497488

Rank: Master

Only Linux 2.4.x supports huge files on 32bit platforms,
Every tool needs to be checked twice before you use it with huge files, like tar is limited (by POSIX Standards) to 2G files
 
05.12.2003 at 06:03AM PDT, ID: 8508690
Excellent point, gheist. That's an important thing to consider, and deva. Your filesystem can support large files and some of the built-in OS tools might not.
 
05.27.2003 at 08:48AM PDT, ID: 8591167
This can be tricky.  Even though I had the newest linux kernel and using ReisferFS, I still bumped into the 2GB limit.  It happened with an Apache log, I thought I can let it grow beyond 2GB, but it would stay at 2GB and discard all new logs beyond that point.  The trick was to enable large file support when compiling Apache.  
So watch out, and test everything before you put it in production.
Marcin
 
07.13.2003 at 04:17AM PDT, ID: 8911762
Hi,

64-bit kernel systems support files over 2GB by the fact that they are 64-bit.

On 32-bit Sun Solaris systems, e.g. Solaris 2.6, you can still achieve files greater that 2GB easily by using DiskSuite.

Regards, Nisus
http://www.omnimodo.com
 
07.14.2003 at 06:44AM PDT, ID: 8917009
Actually, whether you can use files >= 2GB has very little to do with general 32-bit vs. 64-bit kernel support.

HP-UX, Linux Solaris, *BSD, and AIX have all supported >2GB filesystems for something like ten years, much longer than they've had general 64-bit kernel support. But older filesystem designs required a specific flag when creating the filesystem. _Some_ of the newer filesytem designs now do >2BG _only_ or at least by default, but not all.
 
08.18.2003 at 06:41AM PDT, ID: 9173380
Large File Support ( LFS ) is a relatively new feature and most of the recent OS kernels support large files.

Atleast your linux box will support large files. This may however require you to  recompile some of your applications

refer to this link for more info on LFS in Linux

http://www.suse.de/~aj/linux_lfs.html
 
08.18.2003 at 08:09AM PDT, ID: 9174070

Rank: Master

Not that bad, but kernel 2.2.18 does not support large files on 32bit architectures, Solaris nad HP-UX support Large files for ten years or so, but most of GNU applications cannot use it still
 
08.18.2003 at 10:25PM PDT, ID: 9178695
asker said
>>Red Hat 7.3 Linux(2.18 Kernel version).

I presume it was 2.4.18 ... Red Hat 7.1 onward used 2.4.XX

anyway, the 2.2.18 kernel also supports LFS with the ext2 file system. The only thing for complete LFS not supported in 2.2.18 is file locking and getdents

If kernel supportd it, GNU applications *can* also use LFS, they will have to be recompiled with "-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE".
 
10.01.2003 at 09:31AM PDT, ID: 9467977
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:

Recommendation: PAQ/Award points to PsiCop (can't split, too few points)

Please leave any comments here within the next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!

PsiCop
EE Cleanup Volunteer
 
10.01.2003 at 11:44AM PDT, ID: 9468868

Rank: Master

Please give one point to psicop and round down if possible
 
10.01.2003 at 11:49AM PDT, ID: 9468909
*shrug* I helped answer the question and I'm the only one who got off my fanny to do some clean-up work.
 
 
20080236-EE-VQP-29