checking filesystem has largefiles set

[Debbie Downing_2]

Hi

Can anyone tell me the command to use to see if largefiles has been applied to a filesystem (for oracle files)... and if largefiles is not set how to configure largefiles without having to recreate the filesystem.

Thanks in advance.


Debbie

[Peter Godron · Accepted solution]

Debbie,
1. cat /etc/fstab

2. Depends on your filesystem:
See "man fsadm"
Example:
fsadm -F vxfs -o largefiles /mount-point

[James R. Ferguson]

Hi Debbie:

To check the status of a filesystem you can do:

# mkfs -m -F vxfs /dev/vgXX/lvolN

(or)

# fsadm -F vxfs /mountpoint

To enable 'largefiles' do, where you do *not* have OnlineJFS installed:

# umount /mountpoint
# fsadm -F vxfs -o largefiles /dev/vgXY/rlvolN

...note the raw device.

...or, if you have OnlineJFS:

# fsadm -F vxfs -o largefiles /mountpoint

Regards!

...JRF...

[Pete Randall]

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


Pete

[James R. Ferguson]

Hi (again):

Examining '/etc/fstab' for 'largefiles' does *not* provide a way to determine that actual filesystem state.

The 'largefiles' or 'nolargefiles' argument of 'fstab' is used only at mount time. If 'nolargefiles' is specified *and* there are largefiles found in the filesystem, then the mount fails. If 'largefiles' is specified but no largefiles are found, the mount succeeds, too.

Regards!

...JRF...

[Bill Hassell]

The easiest method is to use bdfmegs -v (attached). It provides a cleaner look at mounted filesystems.

[Gurumanickam]

hi,

To check the filesystems applied with large files u can use the following command

mkfs -m filesystem-name

To Convert a JFS file system from a nolargefiles file system to a largefiles file system:

fsadm -F hfs -o largefiles /dev/vg02/lvol1

Guru

[Peter Godron]

Debbie,
can you please complete the thread by awarding points to helpful answers and summarising the solution for you.
This will help resolution of similar problem in the future.

Thanks

[Debbie Downing_2]

Have resolved the issue.

Thanks for your help guys.

Regards

Debbie