[linux-lvm] Fails to create LVM volume on the top of RAID1 after upgrade lvm2 to v2.02.180

[David Teigland]

On Mon, Oct 22, 2018 at 08:19:57PM -0600, Gang He wrote:
>   Process: 815 ExecStart=/usr/sbin/lvm pvscan --cache --activate ay 9:126 (code=exited, status=5)
> 
> Oct 22 07:34:56 linux-dnetctw lvm[815]:   WARNING: Not using device /dev/md126 for PV qG1QRz-Ivm1-QVwq-uaHV-va9w-wwXh-lIIOhV.
> Oct 22 07:34:56 linux-dnetctw lvm[815]:   WARNING: PV qG1QRz-Ivm1-QVwq-uaHV-va9w-wwXh-lIIOhV prefers device /dev/sdb2 because of previous preference.
> Oct 22 07:34:56 linux-dnetctw lvm[815]:   Cannot activate LVs in VG vghome while PVs appear on duplicate devices.

I'd try disabling lvmetad, I've not been testing these with lvmetad on.
We may need to make pvscan read both the start and end of every disk to
handle these md 1.0 components, and I'm not sure how to do that yet
without penalizing every pvscan.

Dave