Hello list, I'm using FC7 2.6.23.12-52.fc7 and LVM2 lvm2-2.02.24-1.fc7. I have a RAID1 mdadm software array containing a VG. Half the array has been removed from the system and now returned and I want data from the old half, before it is resync'd back into the array. I can start the old half as a new degraded mdadm array easily enough: mdadm --assemble /dev/md3 --run --update=uuid /dev/sdc2 Of course, lvm complains about a duplicate volume group. So I want to rename and re-UUID the PV and VG. I've tried pvchange --uuid /dev/md3 But lvm refuses because the volume group name is "vg0" in the /dev/md3 metadata and vg0 is an active volume group on /dev/md1, the other half of the RAID1. (It seems lvm's check is slightly naive and it is just looking at the name?) How can change the metadata on /dev/md3 such that it can be activated without interfering with the currently active VG of the same name and uuid on /dev/md2? I'm sure I've misunderstood something somewhere! Aside, it's a bit alarming when the vg/pv related tools report "Found duplicate PV <uuid>: using /dev/md3 not /dev/md1". "Using" for what? Will the system change to using the newly connected duplicate PV? I definitely don't want it to do that! Thanks, Richard _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
