Finding newfs options used during file system creation time

[Naveen M]

Is there a command which I can use to find out; what newfs options were used to create the file system?

Example: There is a logical volume /dev/vg01/newlvol. How can I can find out whether it is created with -o largefiles option or not.

Thanks

[Dennis Handly · Accepted solution]

# fsadm -F vxfs filesystem

Change it with:
# fsadm -F vxfs -o largefiles filesystem

[Naveen M]

Thank you.

That answers my question.

[Steven E. Protter]

Shalom,

The command fsadm can be used to check and even convert filesystem options. There is an example in the man page of how to convert a filesystem from no largefiles to largefiles.


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SEP

[Naveen M]

What if, I dont have online JFS product?

[Dennis Handly]

>What if, I dont have online JFS product?

Try it anyway, then tell us what happens.
(I've heard conflicting info whether JFS is really needed.)

[Naveen M]

If I try to run fsadm command when I do not have OnlineJFS product installed; I get the following message.

# fsadm -F vxfs /dev/vg00/lvolnew
vxfs fsadm: /dev/vg00/lvolnew is not the root inode of a vxfs file system

[Dennis Handly]

>vxfs fsadm: /dev/vg00/lvolnew is not the root inode of a vxfs file system

You need to run this on the mounted filesystem name. I.e. bdf -t vxfs
And the names on the right.

[Steven E. Protter]

Shalom,

fsadm receives enhanced functionality from the OnlineJFS product.

To perform the command in Dennis's post however you do not need OnlineJFS

You need online JFS to defragment a vxfs filesystem or to extend it without umount
(and many other cool things)

SEP

[Naveen M]

The file system is mounted. Still the error.

Attached is some relevant commands output.