Fedora21/22 grub doesn't recognize my raid1/LVM partitions

[John Wright]

On Mon Jul 13 02:19:31 UTC 2015 Chris Murphy typed:

>So there's the kernel bug, 1225671, that ends up stopping the arrays,
>but then there's a misleading message saying there's a problem that's
>been corrected, yet clearly not corrected.

The exact wording of the message is:

'Unexpected system error. The system has encountered a problem and recovered.'

>Does this same kernel call trace happen with Fedora 21's installer? Or
>does it fail for a different reason?

With the F21 installer, there is no error message, and the installer
does find the raid1 array.  But it finds it only as one ~ 460 GB
'physical volume'; my existing LVM partitions are not recognized, so
I can't install into them.

>There is a beta release criteria for this:
>
>Hardware and firmware RAID
>The installer must be able to detect and install to hardware or
>firmware RAID storage devices.
>
>And there are test cases, and there's an entry for software raid in
>the test matrix. So it should get tested multiple times per build, and
>there will be a dozen builds pre-alpha, pre-beta, and pre-final. So
>it's a bit surprising this is so easy to hit (the bug report has
>someone hitting it in virtual box).
>
>Obviously this can't be fixed with official media, you could roll your
>own workstation installer compose and instead use kernel 4.0.5 which
>should fix this bug, and then you'd be able to install F22 to this
>existing software raid.
>-- 
>Chris Murphy

Alas, rolling my own workstation installer is beyond my present skill
level.  I must decide whether to wait for Fedora 23, or to back up
everything and let the F22 installer have a crack at creating a new
raid1 array with LVMs on top of it.

Thanks again for the help,

 	-jmw-