vxfs & large file size

[R.Suresh]

Dear all,

HP-ux 11 is having capability of 128gb

of single file size,

How to create (or) convert a file system
to have large file size(upto 128gb)?

Is it possible in Vxfs files system?

Thanks & regards
R.Suresh.

[Tom Danzig · Accepted solution]

Unmount the file system (unless you have OnlineJFS) and use fsadm to enable large files.

# fsadm -F vxfs -o largefiles /dev/vgxx/lvolx

Also edit /etc/fstab and change the "nolargefiles" to "largefiles"

[Rainer_1]

this is only available with OnlineJFS 3.3 (B3929CA)

[Cheryl Griffin]

Be sure to check out your documentation online:
/usr/share/doc/lg_files.txt

Has all the instructions and information.

AdvancedJFS (or OnlineJFS) changes this process and makes it easier to manage the filesytem.

There are also several threads on this. Use the Search tab at the left, search for largefiles and select the Forums section.

[John Palmer]

Hi,

To create a filesystem capable of holding large files, specify the option 'largefiles' to mkfs:-

mkfs -F vxfs -o largefiles

You don't have to specify the 'largefiles' option in /etc/fstab as it defaults to the capability of the filesystem. However 'largefiles' in /etc/fstab will fail the mount if the filesystem is not capable and 'nolargefiles' will fail the mount if the filesystem contains any large files.

Regards,
John

[CHRIS_ANORUO]

John is right, you don't have to set largefiles in /etc/fstab, it will take the default.

[Tom Danzig]

Since this is a conversion to largefiles on an existing vxfs files system (obviously created with nolargefiles), there will be a nolargefiles in the fstab file.

OnlineJFS is not required. If you have it, you can skip the umount/mount steps and do it online.