change filesystem to largefile option without unmounting

[Carles Viaplana]

Hello,

Is there any way to modify filesystem to accept large files without unmounting it?

I've a filesystem without largefile option, I need to extend a tablespace into this filesystem with a file bigger than 2 GB and I want to try to do it without stop database (some files from database are already stored there).

Thanks in advance for your help.
Regards,

Carles

[Pete Randall · Accepted solution]

Carles,

The man page doesn't mention anything about unmounting. I would just go ahead and try it:

fsadm -o largefiles /dev/vg02/lvol1


Pete

[Pete Randall]

Carles,

The man page doesn't mention anything about unmounting. I would just go ahead and try it:

fsadm -o largefiles /mountpoint


Pete

[A. Clay Stephenson]

If you have OnlineJFS then yes this is possible. All you need to do is execute fsadm -F vxfs -o largefiles /u01 and this can be done while the filesystem is mounted. You do not have to add the largefiles mount optiuon as this does not actually turn on or off largefiles.

[Patrick Wallek]

If you have OnlineJFS / AdvancedJFS then you can do this without unmounting the filesystem.

The syntax should be:

# fsadm -F vxfs -o largefiles /mountpoint

If you don't have OnlineJFs, then I believe you have to unmount first.

[Geoff Wild]

That is correct - onlineJFS - you can do it on the fly - no OnlineJFS - then you have to unmount it.

swlist -l product |grep OnlineJFS


Don't forget to update /etc/fstab.

Rgds...Geoff

[Olivier Masse]

If you're talking about mount-time parameters and the fsadm has been done, mount has a "-o remount" option that you can use to set SOME parameters dynamically -- don't know about largefiles, but it does with with the log options.

Try something like:
mount -o remount,largefiles /filesystem

Better do it on a test filesystem first.

Olivier.

[Raj D.]

Hi Catles ,

You can change the flag to largfile with this command:

# fsadm -o largefiles /mount_point

( Where /mount_point is your filesystem mountpoint , not the lvol name )


Cheers,
Raj.

[Raj D.]

Hi Carles ,

You can change the flag to largfile with this command:

# fsadm -o largefiles /mount_point

( Where /mount_point is your filesystem mountpoint , not the lvol name )


Cheers,
Raj.

[Carles Viaplana]

Sorry for my delay!

Finally we have stopped system for maintenance and we updated filesystem at same time.

Thanks anyway for your help.
Regards,

Carles