Determine largefile support 11.23

[Cossam Mafuta]

I do not have root access but am a developer with limited access is it possible to determine whether a filesystem has largefiles option in HP-UX B.11.23 ia64.

Checked fstab - no largefiles options in there
Tried fstyp, fsadm, mkfs with several options all these do not work with limited access.

[Steven E. Protter]

Shalom,

largefiles was taken out of fstab in 11.11

fstyp -v

This may however require root access to get the information.

SEP

[James R. Ferguson]

Hi:

In the absence of permissions to run 'mkfs', 'fsadm' or 'fstyp' I suppose you could simply test your ability to create a largefile (>2GB). A simple test is:

# perl -e 'open(FH,">","./LARGE") or die;seek(FH,2**32,1) or die'

IF 'largefiles" is allowed, your filesystem will have a sparse file of size 4,294,967.298. IF 'largefiles' is NOT enabled, the resulting file will show zero (0) size.

The ability to specify 'largefiles' and 'nolargefiles' options in '/etc/fstab' was *NOT* removed in current releases. Rather, the absence of any option simply allows the state of the filesystem to determine whether it is mounted with largefiles enabled or not.

Regards!

...JRF...

[James R. Ferguson]

Hi (again):

Ooops! I dropped a write. The correct script should be:

# cd /path_to_evaluate

# perl -e 'open(FH,">","./LARGE") or die;seek(FH,2**32,1) or die;print FH "\n"'

# ls -l LARGE

Regards!

...JRF...

[James R. Ferguson]

Hi (again) Cossam:

I see that you are new to the ITRC today. Welcome to the community!

Please consider:

http://forums1.itrc.hp.com/service/forums/helptips.do?#28

Regards!

...JRF...

[Cossam Mafuta]

Thanks will tried perl option seemed to work.