[DRBD-user] enable drbd resource at first time

[guohuai li]

Hi, dear friends,

 

http://www.drbd.org/users-guide-emb/s-first-time-up.html

>From above page, I know that to enable our resource at first time, needs to issue below command:



Create device metadata. This step must be completed only on initial device creation. It initializes DRBD's metadata: 


drbdadm create-md resource
v08 Magic number not found
Writing meta data...
initialising activity log
NOT initialized bitmap
New drbd meta data block sucessfully created.
success
    




Attach to backing device. This step associates the DRBD resource with its backing device: 


drbdadm attach resource




Set synchronization parameters. This step sets synchronization parameters for the DRBD resource: 


drbdadm syncer resource




Connect to peer. This step connects the DRBD resource with its counterpart on the peer node: 


drbdadm connect resource

 

For drbd-8.3.0 , I meet below problem:

when command "drbdadm attach r0" issued, it reported error: drbd not loaded; 

but after I issued command "/etc/init.d/drbd start", it reports "(124) Device is attached to a disk (use detach first)".

The detailed information is described below.


+++++++++++++++++++++++++++++++++++++++++++++

linux-10:/etc # /etc/init.d/drbd stop
Stopping all DRBD resources.
linux-10:/etc # 
linux-10:/etc # 
linux-10:/etc # 
linux-10:/etc # drbdadm attach r0
Could not stat("/proc/drbd"): No such file or directory
do you need to load the module?
try: modprobe drbd
Command 'drbdsetup /dev/drbd0 disk /dev/sda10 /dev/sda10 internal --set-defaults --create-device --on-io-error=detach' terminated with exit code 20
drbdadm attach r0: exited with code 20
linux-10:/etc # 
linux-10:/etc # /etc/init.d/drbd start
Starting DRBD resources:    [ d(r0) d(r1) d(r2) s(r0) s(r1) s(r2) n(r0) n(r1) n(r2) ].
..linux-10:/etc # 
linux-10:/etc # 
linux-10:/etc # drbdadm attach r0
/dev/drbd0: Failure: (124) Device is attached to a disk (use detach first)
Command 'drbdsetup /dev/drbd0 disk /dev/sda10 /dev/sda10 internal --set-defaults --create-device --on-io-error=detach' terminated with exit code 10
linux-10:/etc # 

++++++++++++++++++++++++++++++++++++++++++++++

 

Would you help to explain this?

 

Best regards,

Edward


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