[DRBD-user] drbd and fencing: "Handler not known"

[Phong Nguyen]

Hi all,

I am new with DRBD, and i am trying to setup a DRBD / GFS data share on 
two xen nodes (aka primary/primary).
The current versions are:

- Nodes OS: Centos 5 (2.6.18-53.1.19.el5xen)
- DRBD: 8.2.5 (coming from Centos Repository Packages)
- GFS: 0.1.16-5.2.6.18_8.el5 (coming from Centos Repository Packages)

Actually, i am just trying to setup DRBD with fencing-only. Below is my 
config.
However, every time i try to launch DRBD, i've got this error message: 
"Handler not known".
As fencing-only mechanism rests on the outdate-peer handler command, and 
given that the outdate-peer command is defined in the common section, 
why do i got this error ?

Thanks a lot for any response. I haven't find any kind of problems like 
this by googling, and i am unable to know why my outdate-peer command is 
not taking by DRBD.
Phong

global {
        usage-count yes;
}
common {
        syncer {
                rate 40M;
                verify-alg sha1;
        }   
        handlers {
                outdate-peer /etc/cluster/fence.sh;
        }
        startup {
                wfc-timeout 20;
                degr-wfc-timeout 10;
                become-primary-on both;
        }
        net {
                allow-two-primaries;
                #after-sb-0pri discard-zero-changes;
                #after-sb-1pri discard-secondary;
                #after-sb-2pri disconnect;
        }
}
resource r0 {
        protocol C;
        on ***** {
                device    /dev/drbd1;
                disk      /dev/xvda4;
                address   10.0.0.6:7789;
                meta-disk internal;
        }
        on **** {
                device    /dev/drbd1;
                disk      /dev/xvda4;
                address   10.0.0.5:7789;
                meta-disk internal;
        }
        disk {
                fencing ressource-only;
                on-io-error detach;
        }
}