2008/9/1 Michal Soltys <soltys@xxxxxxxx>: > What do: > > mdadm -E /dev/sda1 > mdadm -E /dev/sdb1 > mdadm -E /dev/sda2 > mdadm -E /dev/sdb2 > > show, if anything ? > Hi Michal, Each device reports the same as /dev/sdb1: # mdadm -E /dev/sdb1 mdadm: No md superblock detected on /dev/sdb1. I think there might be a more subtle problem - the disks /dev/sda2 and /dev/sdb2 appear to have the same UUID. I'm not sure of the significance at present and am going to have to do a bit more investigation, but it is enough to prevent pvcreate /dev/sda2 from working - unless I specify the -ff flag as an additional parameter, which I am loathe to try without understanding what might happen. I was working towards creating an lvm-mirror following some earlier advice in this thread, and found this problem when using system-config-lvm. The GUI shows /dev/sda2 as uninitialised and the error occurs when trying to initialise it. Any further advice would be gratefully received (although I appreciate that this is the linux-raid, not linux-lvm group)! Best wishes and thanks for your suggestions. Michael -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
