> On Sat, 2006-06-24 at 11:34 +0100, centos@xxxxxxxxxxxxxxxx wrote:
>> > On Sat, 2006-06-24 at 07:02 +0100, centos@xxxxxxxxxxxxxxxx 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
>>
>
> If you are not using raid on purpose, try removing the package dmraid
> like this:
>
> rpm -e dmraid
>
> then rebooting
Johnny,
Once again you are proving to be the man.
That fixed it. Both resources are up and the 2nd is syncing.
One question, I guess I don't need dmraid as I don't have a raid array,
but why would it 'grab' the disk as it had never been set in the 1st
place?
Once again thanks.
Rob
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