topic limit datasize problem in Operating System - HP-UX

limit datasize problem

Craig Anderson_1 — Thu, 01 Nov 2001 23:38:28 GMT

We are having a problem setting the datasize limit to 3GB which is required by one of our applications. We are running HP-UX 11.00 on an HP J9000/785 system with 4GB RAM and have installed the most current QPK1100_11.00, XSWGR1100_11.00, and XSWHWCR1100_11.00 patch bundles. These patches enable me to set the maxdsiz kernel parameter above the 1.9GB limitation to 3221225472 (0XC0000000) which it is.

When we first login (using tcsh), the limit command shows the datasize set to unlimited. If we execute the command limit datasize 2047M, it runs fine and sets the datasize limit to 2096128 kbytes. Any number higher than 2047M just returns the error "limit: No such limit."

Does anyone know hot to set the datasize limit to 3GB?

Re: limit datasize problem

Bill Hassell — Fri, 02 Nov 2001 05:07:25 GMT

If the filesystem has not be created with the largfiles option AND has not been mounted with the largefiles option, you can't create any files larger than 2 Gb. You can use fsadm to modify the filesystem while it is running. Then add the option to fstab.

Re: limit datasize problem

Animesh Chakraborty — Fri, 02 Nov 2001 05:57:44 GMT

Hi,
You need to umount the lvol (logical volume) and run the command
against the character device file of the lvol:

fsadm -F vxfs -o largefiles /dev/vgXX/rlvolXX.

Success can be verified with fsadm -F vxfs /dev/vgXX/rlvolXX.

If an application is going to be creating files greater than
2 GB, it must be compiled with _FILE_OFFSET_BITS=64 or
rewritten with the 64 Bit API. Refer to
/usr/share/doc/lg_files.txt for more information.

Best of Luck
Animesh