Thanks so much! now it does work ok.

Best regards

Mariano
> Mariano Gonzalvo wrote:
>   
>> Hi,
>>
>>     I'm trying to configure lvm2 on top of drbd. I've configured drbd
>> (/dev/drbd0 and /dev/drbd1) and put them as primary node, but when I try
>> to create a physical volume this is what it does happens
>>
>>        pvcreate /dev/drbd0
>>           Physical volume "/dev/drbd0" successfully created
>>        pvdisplay
>>             --- NEW Physical volume ---
>>           PV Name               /dev/md4
>>           VG Name
>>           PV Size               129,45 GB
>>           Allocatable           NO
>>           PE Size (KByte)       0
>>           Total PE              0
>>           Free PE               0
>>           Allocated PE          0
>>           PV UUID               MtxjHy-8zfW-i9nq-TJA4-b6F9-jtcW-FkanLB
>>
>>     /dev/md4 is the raid device over was configured drbd0.
>>
>>     Why /dev/md4 it's taken as PV Name?
>>
>>     
>
> It's trying to be helpful! Normally people build MD devices out of other devices
> and so LVM uses the MD in preference to other devices it finds with the same UUID.
>
> You'll need to exclude the MD device in the /etc/lvm/lvm.conf filters entry.
> something like:
>
> filter =[ "r/md4/" ]
>
>
>