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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