2 GB File Limitation 1

[jocasio]

Hey all:

I am having a problem dumping a database because it's over two Gigs. Tech support said I have to make sure " have to amke sure the "Large_Files" setting was turned on in my OS (HP UX 11.0) Can any one tell me what he means and what parameter I need to change. I'm not even sure it's a Kernel Parameter.

many thanks for your help

jocasio

 

[Chacalinc]

when you create a filesystem you do it seting an attribute "largefiles", example:

mkfs -F hfs -o largefiles /vg10/rlvol1

man mkfs_hfs for more info.


Cheers.

 

[jocasio]

Chacalinc:

Thanks so much for the speedy reply. How can I do this now that the filesystem is created? Also I created the original file system using sam. Is there a switch for it there? One last thing: You mentioned I have to set the largefile for the file system. Does it matter that the file I am creating within a filesystem is over 2 gigs? In other words, if my file system is set for largefiles, will that automatically make my files support over 2 gigs?

Thanks again!

jocasio

 

[Chacalinc]

1. How can I do this now that the filesystem is created?

use SAM, select the filesystem and modify it, it should have a "large files" or something like that option.

2. Also I created the original file system using sam. Is there a switch for it there?

yes, it should have a large file option.

3. Does it matter that the file I am creating within a filesystem is over 2 gigs? In other words, if my file system is set for largefiles, will that automatically make my files support over 2 gigs?

Yes, it matters. If "largefiles" option is not set, filesyste, has the 2 Gig limit. with largefiles enabled, you can create files larger than 2 GB.

Cheers.

 

[jocasio]

Chacalinc:

Again, Thanks so much for your replies. I just made the change and it worked! Interestingly, the file that was created was only 1.4 Gigs. When it failed on my dump, however, the file creat4ed was over 2 gigs.

Thanks again for your help!!!

jocasio

 

[Chacalinc]

anytime.

 

[vascobrito]

could any of you tell me where is that option "large file" in the sam options?
i'm using hp-ux 11.0.
I have searched a lot but didn't found. maybe i've missed it.
thanks

 

[jocasio]

vascobrito:

When you start sam, select File System. Then highlight the file system you're interested in. Select Action/Modify...
and one of the options is "Allow Large Files" X the selection and apply.

jocasio

 

[TheKidd]

Large files can also be enabled by typing:

fsadm -F vxfs -o largefiles /<mountpoint>

 

[MikeLacey]

jocasio - simple is good

Mike

Want to get great answers to your Tek-Tips questions? Have a look at faq219-2884

It's like this; even samurai have teddy bears, and even teddy bears get drunk.

 

[eskolnik]

What overhead does the largefile option cause, any reason why I would just specify it?


Ed

Ed Skolnik

 

[Chacalinc]

As I know, none.. if you are talking about specify "largefiles", the only reason is to support files bigger than 2 GB. Actually, I don't know why the "largefiles" option is not set by default.

Cheers.

 

[eskolnik]

The Inode assigment isn't any differant?

Ed Skolnik

 

[jxmac18]

nolargefiles is the default because there is an overhead to the inode structure with indirect references. Although any performance impact should be negligible. I always default to largefiles if I need the flexibility.

The onlineJFS product allows you to modify largefiles setting without needing to unmount the filesystem aswell.

SAM is for wimps (and kernel changes)! Any system administrator should know exactly what's being done to their system, so they can fix it when it breaks.

--
Jack