How to create >2Gb large file

[go3mon]

How I can create a file >2Gb? What's the command I must use for change the filesystem standard parameters? I must use JFS online?

[Piergiacomo Perini]

Hi go3mon,

if you have to modify the previous parameters of a filesystem ... i really don't know ... maybe some option of JFSonline.
If you have to create a new file system then use

(-o largefiles)

hth
regards
pg

[swarup kundu]

if you want to create File system which can support filesize of more than 2 GB then,

eg:
newfs -o largefiles /dev/vg01/rlvol1


note:you do not require online JFS product for this.

[Alexander M. Ermes]

Hi there.
If the filesystem is in use, look at the manpage of fsadm. This will give you the chance to change the large file option during operation on a working file system.
Rgds
Alexander M. Ermes

[Steven E. Protter]

Shalom,

fsadm can convert an existing fileystem from default to largefiles

newfs -F vxfs -o largefiles

creates the filesystem that way.

newfs is destructive on existing data.
fsadm is not destructive.

SEP

[Asif Sharif]

You need to give this command to enable large files enable.

newfs -F vxfs -o largefiles /dev/vgname/rlvolname

Regards,
Asif Sharif

[swarup kundu]

if the filesystem is in use ,the give this command.
#fsadm -F vxfs -o largefiles /dev/vgname/volname

[Jaime Bolanos Rojas.]

go3mon,

And as it was not enough, if you go to docs.hp.com and search for "largefiles", then your first hit is going to be this document:

http://docs.hp.com/en/B3929-90011/ch01s16.html

Regards,

Jaime.

[Rita C Workman]

To enable an existing file system you could do this:

umount /
fsadm -o largefiles /dev//r

Mount it back up........then to double check run and it should say "largefiles"

fsadm /dev//r

Rgrds,
Rita

[go3mon]

Sorry but the filesystem is now in use and I can't umount or re-create with newfs.

[Rita C Workman]

If you have OnlineJFS you can probably do it on the fly.........just try running the fsadm command above and give it a try.

Rgrds,
Rita

[Dennis Handly]

>Sorry but the filesystem is now in use and I can't umount or re-create with newfs.

I don't think you need to unmount it. Go ahead and try changing it. (As Rita said.) I had no problems and I don't have OnlineJFS.

[swarup kundu]

Rita is right.It can be done on the fly.