Command line implementation of JFS2 and 64 Bit Kernel

[costiles]

Does anyone know of a wayt to do this from the command line?

 

[costiles]

I see that it is not possible. But I also see that it is implemented on the rootvg. Is it also available on a user created vg?

 

[p5wizard]

You want to create jfs2 filesystems from command line?

mklv -t jfs2 -y j2lvname uservg 10

crfs -v jfs2 -d j2lvname -m /jfs2mount/point -Ay -tn -prw

If this is not what you are looking for, please explain your question a bit more.


HTH,

p5wizard

 

[costiles]

Thank you p5wizard! My problem is this: I have a customer who is currently on 4.3.3. He has a file that has just grown to over 64Gbs. I am expecting to have to upgrade to 5.2 - or better of AIX to allow this file to continue to grow. Do I turn on jfs2 in the rootvg - and then have a mixture of jfs and jfs2 file systems - all on my datavg volume group? I assume that I turn on jfs2 as part of the upgrade process - when I get to Installation and Settings - I think options 4 and 5 turn on 64Bit Kernel and jfs2. Will the operating system continue to see my old jfs file systems as jfs - and any new file systems become jfs2? Do I not select the jfs2 file system option in the installation and then create jfs2 with your command line tools? Just how is it best to handle the jfs vs jfs2 file systems when I already have jfs file systems that I want to keep?

 

[21sam]

hi,
you can keep both file types. AIX 5L will support jfs as well as jfs2. but you can't modify the jfs file type to jfs2 file type. in order to do that, you need to create new jfs2 file type and then migrate the data from jfs to jfs2.
let me know if you have any questions.

thanks

 

[p5wizard]

When installing - 64bit kernel and jfs2 really means: "do you want to have rootvg filesystems as jfs2"

And 21sam is right, you cannot convert a jfs FS into a jfs2 FS without some sort of copy, backup/restore, ...

As to that AIX upgrade 433 to 5x: you want to make sure your customer app's are compatible with AIX5. If they are 64bit, I can tell you right now that they wont be compatible - they have to be recompiled if they are the customer's own-grown, or you need to install a newer version of 'em, compiled for AIX5 if they are third-party.

64bit AIX433 is not binary compatible with 64bit AIX5.


HTH,

p5wizard