> On Sat, 2006-06-24 at 07:02 +0100, centos at bathnetworks.com wrote: >> Hi all, >> >> I've been wrestling with a problem with drdb and centos. I have >> successfully created one drbd resource, but when I try the create a 2nd, >> I >> get an error on one of the nodes: >> >> Lower device is already mounted. >> Command 'drbdsetup /dev/drbd1 disk /dev/hdd1 internal -1' terminated >> with >> exit code 20 >> >> The partition is not mounted from fstab etc and is newly created with >> parted after wiping this disk with dd. >> >> On the node with the problem I see: >> >> cat /proc/partitions >> major minor #blocks name >> >> 3 0 60034968 hda >> 3 1 514048 hda1 >> 3 2 1534207 hda2 >> 3 3 57986617 hda3 >> 22 0 120060864 hdc >> 22 1 114688003 hdc1 >> 22 64 117220824 hdd >> 22 65 114688003 hdd1 >> 253 0 117219800 dm-0 >> 253 1 114688003 dm-1 >> 147 0 114556928 drbd0 >> >> On the other node the dm-0 and dm-1 do not occur. Being new to Linux, I >> am >> not sure where these come from. I have tried google, but nothing makes >> sense. This maybe a red herring, but dm-1 has the same number of blocks >> as hdd1 which I am trying to mount so I'm guessing that this is the >> cause >> of the problem. >> >> As I have tried changing every thing I can except the mb/processor and >> reinstalling, I'm really stuck. >> >> HELP Please. >> >> Rob >> >> >> > > I am not an expert on filesystems ... but dm-0 and dm-1 look like raid 0 > or LVM partitions as they have 253 as their Major device number. > > What does fdisk -l say for that drive (/dev/hdd). > Thanks for the reply. As far as I am aware, there is no raid or lvm setup on the machine. disk -l for hdd gives: Disk /dev/hdd: 120.0 GB, 120034123776 bytes 255 heads, 63 sectors/track, 14593 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hdd1 1 14278 114688003+ 83 Linux Rob