Move to LVM2 Possible?

birdo · Posted: Fri Aug 13, 2004 12:26 pm Post subject: Move to LVM2 Possible?

I have an installed gentoo system, using only 1 drive out of 5 in the machine. What I want to do is make the move to LVM, using the remaining four disks in one large volume group for now. I would like to just 'move' /usr onto that new volume, and probably /home as well.

I am wondering if this is possible with the system up and running. Here is my current partition layout:

Maedhros · Posted: Fri Aug 13, 2004 12:56 pm Post subject:

I'm sure it's possible. This is how I'd do it, anyway.

Create the new logical volumes, and do everything necessary to mount them. (Do something like this for each one. In this example, I'll usr /usr.)
Mount the volume somewhere like /mnt/usr
cp -a /usr/* /mnt/usr
1. The -a switch will preserve the permissions
Change your /etc/fstab to mount your new volume in /usr
Mount it as /usr and try running random commands to see if your system is still usable.
If it is, unmount it, and delete everything in your current /usr directory, and then remount it.

I don't think I've made any glaring errors in there, but check it though to make sure it makes sense to you before trying it. :wink:

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birdo · Posted: Fri Aug 13, 2004 1:28 pm Post subject:

I will definetly give it a shot. It's not critical, the reason i ended up with this crappy partitioning scheme in the first place is because I was having hardware problems while installing gentoo, and did not expect this installation to work... So now that I have emerged X and KDE, I would like to try to fix it up, rather than spend another 3 days of wall time waiting for those to emerge again

Thanks for the input, that helps me a lot!

birdo · Posted: Sun Aug 15, 2004 4:26 pm Post subject:

Maedhro, just wanted to let you know that your steps worked just perfectly. They worked especially well after I spelled reiserfs correctly in fstab...

Thanks for the help, I appreciate it. You are cool in my book now. Not that I have a book, nor where you ever not cool in it, so you really get nothing out of this. But thanks anyways!

pjp · Administrator Joined: 16 Apr 2002 Posts: 20421

Moved from Installing Gentoo.
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