FW: [DRBD-user] Unable to create drbd disk

[Alex Vrenios]

> -----Original Message-----  
> We have just compiled and installed the latest version of 
> drbd onto Redhat as 3, the module loads without any problems 
> and /proc/drbd shows the following:
>  
> version: 0.7.10 (api:77/proto:74)
> SVN Revision: 1743 build by root at localhost.localdomain, 
> 2005-02-25 09:36:40
>  0: cs:Unconfigured
>  1: cs:Unconfigured
>  
> When we try to create a drbd drive/partition with drbdsetup 
> we get the following error:
>  
> drbdsetup /dev/drbd0 disk /dev/sda5
>  disk lower_dev meta_data_dev meta_data_index [{--size|-d} val]
>          [{--on-io-error|-e} val]
> Not enough arguments.
>  
> /dev/sda5 is a freshly formatted ext3 20G partition.
>  
Anthony,

I too am just getting into the depths of DRBD, on RH9 at home, and on RH EL,
AS 3 at work. We created a 3G partition for /dev/drbd0 and got the same
error message. It seems the documentation for the expanded version of this
command was lost along with some other content at the "new" DRBD site. A
temporary version is available at

http://wiki.linux-ha.org/RecentChanges 

Back to your question, the error message is trying to tell you that you must
supply a "meta data" partition and an "index" along with the operands that
you listed in your post (above). Some of this meta data is described in the
man page for drbdsetup that comes with 0.7.10, but the examples at the
bottom of it are still in the "old" format. I guessed at the index value.

I have a 3G partition for DRBD and a 1G partition for the "meta data" on the
same 4G drive that is dedicated to DRBD use. I used

   root# drbdsetup /dev/drbd0 disk /dev/hdd1 /dev/hdd2 1
   root# mkfs -b 3072 /dev/drbd0
   root# mkdir /data
   root# chmod 777 /data

I added 

   mount /dev/drbd0 /data
   /etc/init.d/drbd start

to my /etc/rc.d/rc.local script and in the process of making my way through
the woods :)

I hope this helps you,

Alex