largefiles & fstab

[Sergejs Svitnevs]

Hello,

I have enabled largefiles on one of my filesystem using command:

# fsadm -o largefiles /

Now fsadm gives the following output:

# fsadm /
fsadm: /etc/default/fs is used for determining the file system type
largefiles

Everything is ok.

Do I need to add the "largefiles" option in the entry in /etc/fstab?

HP-UX 11.11.

Thanks,
Sergejs

[Pete Randall]

No.


Pete

[Sunil Sharma_1]

Hello,

No need to add largefiles option in fstab file.

Sunil

[A. Clay Stephenson]

The system has to reference /etc/default/fs to determine the type of filesystem (hfs, vxfs, ...) because you were too lazy, too sloppy, too sleepy, or just messed up this time) to use the -F vxfs (or -F hfs) fsadm option. Once you have set the largefiles option on the filesystem, it is not necessary to set it when the filesystem is mounted. In fact, it doesn't do what you think it does as a mount option. Man mount_vxfs (or mount_hfs) for more details.

[Sergejs Svitnevs]

Could you point me to a good HP document about largefiles?

[A. Clay Stephenson]

Man mount_vxfs should tell you everything you need to know.

[James R. Ferguson · Accepted solution]

Hi Sergejs:

The "original" white paper on largefiles is this:

http://docs.hp.com/en/940/lgfiles4.pdf

Regards!

...JRF...

[Sergejs Svitnevs]

thanks

[Steve Andrews_6]

Some additional information. After you change the file system mount point to largefiles, you can verify the channge with the mkfs -m command to see the file build structure. See the example below:

# mkfs -m /dev/vg00/lvol9

mkfs -F vxfs -o ninode=unlimited,bsize=1024,version=4,inosize=256,logsize=1024,nolargefiles /dev/vg00/lvol9 102400

Yours should come back largefiles.