Extend Striped Logical Volume 1

[romecoyle]

I read that there is a way to extend a striped logical volume in AIX but I haven't done it before myself and don't know anyone who has. I'm actually trying to add a few disks to a volume group that has striped logical volumes on it and I'm being told that I should build a new volume group because the striped logical volumes will not be able to stripe across the new disks. I just wanted to check what people thought of the accuracy of that statement. Intuitively, it sounds accurate but I'd like to get some second and third opinions. Thanks.

 

[hirschaj]

I would think you could add the new PV's to your existing VG. Run a reorgvg, and then extend your LV's as you want to. I have not tried this method, but I think it would work.


Jim Hirschauer

http://www.aixexpert.com

 

[romecoyle]

Hi Jim,

Thanks for your response. I looked up reorgvg and it doesn't look like this command will deal with striped lvs.

Thanks,
Rome

 

[DukeSSD]

I believe you can do it but the stripes are likely to end up all over the place, so it is better to backup, then rebuild the vg onto all of the disks, then restore.

 

[costiles]

My experience with striped logical volumes is that it is not a fast as softwre striping - ie - setting the range of physical volumes to maximum. Then you can add disks - reorg and you are ready to go. You might ant to experiment with this. I don't think that the hardware striping is worth the added effort - and it may actually be slower. It was in my database application.