On 04.Dez.2013, at 15:08, Nux! wrote: > On 04.12.2013 13:43, Markus Falb wrote: >> >> What does this "Found duplicate PV b79x0kLXR9mAC0z0IZUxyJG1VC24Crl7: >> using /dev/sda2 not /dev/md1" message? >> Some logical volumes are virtual disks vor kvm guests. Are these >> guests using sda only and not the mdraid? > > Markus, > > I see /etc/lvm/lvm.conf has an option to ignore md members and seems on > by default in EL6: > md_component_detection = 1 This is a CentOS 5, but it also has this in lvm.conf, and it's value is 1. > > If you run "pvdisplay /dev/sda2" what does it show? Normally you should > get a "Failed to read physical volume "/dev/sda2". # pvs /dev/md1 Found duplicate PV b79x0kLXR9mAC0z0IZUxyJG1VC24Crl7: using /dev/sda2 not /dev/md1 PV VG Fmt Attr PSize PFree /dev/sda2 vg_sys lvm2 a-- 1.36T 553.16G # pvs /dev/sda2 Found duplicate PV b79x0kLXR9mAC0z0IZUxyJG1VC24Crl7: using /dev/md1 not /dev/sda2 PV VG Fmt Attr PSize PFree /dev/md1 vg_sys lvm2 a-- 1.36T 553.16G > ADditionally you can > force a filter on the drives, smth like: > filter = ["r|/dev/sda2"] I might try that, but it is not necessary on other machines with the same setup. It was not necessary on *this* machine (running since several years) -- Thank You, Markus