[SOLVED] Reformatting LVM partitions

bangorme · 07-02-2016, 06:44 PM

Quote:

Originally Posted by rknichols

I don't know what is happening, then. I did a Fedora 23 install creating a disk with 1 30G LVM partition containing 3 LVs (12G root, 15G home, 3G swap), then ran the Fedora 24 installer using the steps I described above. It all worked just fine, and I was greeted with a fresh installation with a /home that still held the home directory for the original user. Perhaps whatever is wrong is what bricked your F24 upgrade in the first place.

That "500 GB" sounds like your root partition is getting confused with your separate /boot partition (which I did not use). Is your disk GPT? Mine was MBR partitioned; perhaps that's the difference.

Oh, I believe you. The theory about the 500 M being the boot partition makes sense, especially if the /root isn't accessible to Anaconda for some reason. However, that SEEMS unlikely since it is accurately seeing the /root. Wonder if it's read only or something?

Anyway, I checked and my disk is MBR.

rknichols · 07-02-2016, 08:06 PM

You should be able to boot that install disk in "Try Fedora" mode and look at / adjust the LVM structure on that disk.

bangorme · 07-03-2016, 02:22 PM

Quote:

Originally Posted by rknichols

You should be able to boot that install disk in "Try Fedora" mode and look at / adjust the LVM structure on that disk.

Thank you rknichols. I'm marking this as solved.

Before trying to format an existing LVM volume, I advise you to boot into Fedora Rescue Mode and run the command

Quote:

fdisk -l

This will list the names of your LVM groups and LVM volumes within each group. That way you will be sure to know the details about the location of the volume you want to format.

To format an lvm volume ( for example /root).

Boot into Fedora Live
Go to Utilities
Go to Disks
Select the disk that has your Linux LVM group on it.
Under the disk, you will see various "block" drives listed, choose the one that has your LVM volume
Click the gear icon
Chose the "format partition" option

Using this option, I was able to format my /root and use Anaconda (per rknichols' instructions earlier in this thread) to install Fedora 24 after a failed upgrade attempt. The installation preserved my Fedora 23 /home LVM group as desired.