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Date: Thu, 7 Feb 2019 14:25:45 +0000
From: Gary Palmer <gpalmer@freebsd.org>
To: Harry Newton <harry@yewbarrow.net>
Cc: freebsd-geom@freebsd.org
Subject: Re: geom_linux_lvm
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On Thu, Feb 07, 2019 at 05:36:03AM +0000, Harry Newton wrote:
> Trying to read a Linux raid array ( as per
> https://wiki.archlinux.org/index.php/Software_RAID_and_LVM ) which I can
> read perfectly well on a couple of Linux boxes.  geom_linux_lvm.ko loaded,
> but:
> 
>   geom linux_lvm list
>   geom linux_lvm status
> 
> return nothing.  kern.geom.debugflags=16 and kern.geom.linux_lvm.debug=16,
> but *nothing* in logs.  No /dev/linux_lvm/ entries appear, though the two
> component disks appear as /dev/da0 and /dev/da1.
> 
> Suspect I maybe missing something obvious: any ideas where I can start
> debugging this ?

Unless I'm missing something (not a big Linux user), LVM is normally
as a partition on the disks, not the whole disk.  Do the disk
partitions show up or just the whole disks?  What does 

gpart show da0
gpart show da1

return?

Gary