[DRBD-user] DRBD CENTOS Problem

drbd at bathnetworks.com drbd at bathnetworks.com
Sat Jun 24 22:14:55 CEST 2006

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


For the record the problem was cused by the dbraid kernel module. As I was
not using it a quick rpm -e dmraid removed it and fixed the problem.

Rob
> 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
>
>
>
>
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