topic Re: Kernel parameters in Operating System - HP-UX

Kernel parameters

Regina Mitchell — Fri, 27 Jun 2003 14:32:14 GMT

Is there any for MAXfilesize on 11.0

Re: Kernel parameters

James A. Donovan — Fri, 27 Jun 2003 14:35:04 GMT

Maximum file size is a feature of the filesystem, not the kernel.

see the man page on fsadm_vxfs

Re: Kernel parameters

Enrico P. — Fri, 27 Jun 2003 14:38:13 GMT

Hi,
check for the ulimit command.

Enrico.

Re: Kernel parameters

Stefan Farrelly — Fri, 27 Jun 2003 14:39:45 GMT

No, there is no kernel parameter for that.

The only real restriction is if someone forgot to enable largefiles (>2GB) when they created a filesystem. You can check with;

fsadm -F vxfs

If it returns largefiles then youre ok - there is no real limit (1TB or something). If it returns nolargefiles you need to enable it using the fsadm command.

Re: Kernel parameters

Sridhar Bhaskarla — Fri, 27 Jun 2003 14:40:00 GMT

Hi,

With JFS 3.1 and 3.3 version, you can go upto 1 TB filesystem size and 1 TB file size provided you enabled "largefiles" on the filesystem. Otherwise, it won't allow more than 2 GB.

With JFS 3.5, you can go upto 2 TB both filesystem and file sizes.

-Sri

Re: Kernel parameters

James R. Ferguson — Fri, 27 Jun 2003 14:40:38 GMT

Hi:

On 11.0 with VxFS filesystems using JFS version 3 or JFS version 4, you can have 1TB filesystems and files:

http://docs.hp.com/hpux/onlinedocs/5971-2383/5971-2383.html

Regards!

...JRF...

Re: Kernel parameters

Stefan Farrelly — Fri, 27 Jun 2003 14:42:35 GMT

However, there is a shell limit which can stop you creating large files. Do;

ulimit -a

If file(blocks) is not = unlimited then you have a limit - whatever value is reported. This overrides a filesystem limit (fsadm).
Normally it is unlimited. You can try changing it to unlimited with;

ulimit -f unlimited

Re: Kernel parameters

A. Clay Stephenson — Fri, 27 Jun 2003 14:42:39 GMT

Do a ulimit -a. If filesize is unlimited then your only limits are imposed by the filesystem. You may need to enable largefiles (>2GB) with the mount options. Man mount_vxfs and fsadm_vxfs for details.

Re: Kernel parameters

Caesar_3 — Fri, 27 Jun 2003 14:43:50 GMT

Hello!

It's depend on the filesystem, you have fsadm tool to change this parameter.
No depend on the kernel.

Caesar