Live image installation fails to recognize existing LVM volumes

[Rick Stevens]

On 01/12/2016 11:04 AM, Emmett Culley wrote:
> I attempted to install the KDE live image for Fedora 23 and found that the installer would not recognize existing LVM logical volumes.
>
> It the past (Fedora 21), I was able to select existing LVM volumes from the "unknown" list and cause the OS to be installed on existing LVM logical volumes.  Now, all I see in the "unknown" list four non-raid partitions, two of which were swap partitions.
>
> Why doesn't the installer load the LVM volumes?

Are the LVMs using software RAID ("mdraid") partitions? If so, it's a
known bug that the workstation spins don't recognize the mdraid stuff
so your LVMs would also be invisible.

 From the WIKI:

"Software RAID (mdraid) from existing Fedora installations not
recognized by Workstation/Live installs

"link to this item - Bugzilla: #1225184

"Installation from Workstation/Live image does not properly recognize 
software RAID (mdraid) devices from existing (e.g. previous) Fedora 
installations. Those devices are listed as "Unknown" (0 bytes size) and 
cannot be used in the device selection dialog which makes it basically 
impossible to install Fedora 23 or keep existing data.

"This bug exists since Fedora 22 (several Bugzilla reports has been 
filed for this issue). The Server image does not have this problem and 
can be used as a workaround to install the Workstation spin from network 
remotely. Fedora Workstation may no longer be the proper distribution 
for systems with Software RAID devices."

That last bit is pretty irritating. Obviously it's a fixable problem
or the server image wouldn't work, either. A LOT of people have mdraid
devices.
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- Rick Stevens, Systems Engineer, AllDigital    ricks at alldigital.com -
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