I read the How-To. It doesn't talk about the specific case or being mounted at root, so I had to experiment. It is likely that commands were in the wrong order, but I don't know what the right order is.

 

I have attached the terminal session I used. In the end it did not work. There was still 66 GB free, and when I rebooted, the file system failed. The superblock was too big.

 

I obviously don't understand the difference between pvresize, lvreduce and vgreduce, and how  resize2fs  is related to these commands.

 

Hope you can help,

Lou.

 

On 10/21/09, Drew <drew.kay@gmail.com> wrote:

> The documentation wasn't specific. I believe the intent was simply to
> migrate the data to another logical volume to temporarily allow the source
> volume to be reduced and/or removed. But let's assume that has happened or
> that doesn't need to happen. So now we need to unmount LogVol00, reduce it
> to its original nunber of extents and then remount it (either before or
> after remount we remove the physical drive.) I assume you can't try this or
> you'll screw up your computer, but I have a system that I screw up and
> easily restore from a OS image. So no need to be too cautious.

I've done this on several occasions.

If you want to play with various scenarios in LVM, I'd recommend
reading the LVM How-To @ http://tldp.org/HOWTO/LVM-HOWTO/ . Sections
11 & 13 cover the most common tasks you'll encounter in LVM. Play
around, don't be afraid to break things, and if you have questions
feel free to give the list a shout.


--
Drew

"Nothing in life is to be feared. It is only to be understood."
--Marie Curie

_______________________________________________
linux-lvm mailing list
linux-lvm@redhat.com
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/