topic Re: large files in Operating System - HP-UX

large files

Pradeep_3 — Mon, 26 May 2003 09:11:01 GMT

While creating a file system on HP-UX is it a good practise to enable largefile mode even if we know that no large file will be generated?

thanks in advance
Paresh/fenil

Re: large files

Bill McNAMARA_1 — Mon, 26 May 2003 09:13:41 GMT

not vital, I never do it.
With fsadm anyways you can enable it afterwards.
And recall anyways that you'll have to d/load gzips and tars that are also >2G compatible.

Later,
Bill

Re: large files

Massimo Bianchi — Mon, 26 May 2003 09:14:54 GMT

Hi,
i usually always enable it, because your users usually don't care too much about file size limit.

I costs nothing and can prevent you many problems.

Remember also to mount it with the largefile option.

HTH,
Masssimo

Re: large files

Radhakrishnan Venkatara — Mon, 26 May 2003 09:28:47 GMT

normally does with large files option only.
bcoz i don't want to do anything again if my requests me that he wants to use large files.

it hardly takes anything from u.

radhakrishnan

Re: large files

T G Manikandan — Mon, 26 May 2003 09:39:48 GMT

HPUX explicitly has an option to enable/disable largefiles.

It depends on the type of application you are running.

You can check /usr/share/doc/lgfiles.txt for a better understanding

Thanks

Re: large files

Patrick Wallek — Mon, 26 May 2003 18:15:02 GMT

It depends entirely upon your filesystem size. If your filesystem is less than 2GB then there is not point in enabling largefiles. If you have a filesystem larger than 2GB then you could enable largefiles, but I would keep in mind what the filesystem is going to be used for.

I personally prefer to keep largefiles turned off unless specifically requested. That way you don't have a VERY large file that fills up your filesystem at the most inopportune time.

Re: large files

A. Clay Stephenson — Mon, 26 May 2003 19:15:44 GMT

There is no "correct" answer here. What you really need to be aware of is that while the OS itself will support files > 2GB, many applications will not. If your application is known to support largefiles then enable largefiles.

The downside to enabling largefiles is that many of the standard backup utilities (tar, cpio) will not handle large files.

The one time that large files might be enabled eventhough no large files will be needed is the support of many, many files in a filesystem. Surprisingly largefiles also enables a larger number of inodes; of course, in general, if a single filesystem needs that many files, you are probably doing it wrong anyway.

Re: large files

MANOJ SRIVASTAVA — Mon, 26 May 2003 22:28:15 GMT

Paresh/Fenil

It enitrely depends on what software / Databases you are using , typically a Oracel mid sized database uses the large file options . In case you are using a simple non oracle server or the server is being used for a switch application where the large files are not sed then better not to enable it.

the good thing is that you can change it whenever you require.

Manoj Srivastava