Re: [CentOS] Duplicate PV on HW RAID?

Ross S. W. Walker wrote:

Eduardo Grosclaude wrote:

...

Hello, My "hardware" (?) RAID system seems to work but says "duplicate PV" while booting, I don't think I was reading

Could just be that lvm is finding your pv through another path - lvm.conf can be setup to only scan specific devices.

There might be a disk from an old RAID1 set in there.

I'll second that. I forgot to zero out one of my disks from a test raid setup & the when I rebooted for the 5.2 upgrade, lvm refused to start - duplicate uuid - IIRC. 5.1 + updates didn't present the problem, so something was changed in that regard for 5.2.

mdadm --examine <pv device(s)> will tell if there's raid metadata there, --zero-superblock will erase it.