DRBD unconfigured state

[Zriouil]

Hi,
I'm using Proxmox HA with shared storage DRBD.
After turning off my servers, DRBD has become unconfigured.
I tried restarting the service, but no result.

root@ahmed:~# service drbd restart
Stopping all DRBD resources:
Starting DRBD resources:[ d(r0) 0: Failure: (104) Can not open backing device.



root@ahmed:~# service drbd status
drbd driver loaded OK; device status:
version: 8.3.13 (api:88/proto:86-96)
GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by root@sighted, 2012-10-09 12:47:51
m:res cs ro ds p mounted fstype
0:r0 Unconfigured


during setup, I created a physical volume. I caled it drbd0

Before the stop, I had
root@ahmed:~# pvscan
PV ...... /dev/drbd0 ......................lvm2 [20.00 GiB / 12.00 GiB free]
PV ...... /dev/sda3 .......VG pve ...... lvm2 [7.87 GiB / 892.00 MiB free]
Total: 2 [27.87 GiB] / in use: 2 [27.87 GiB] / in no VG: 0 [0 ]


after, I have this:
root@ahmed:~# pvscan
PV ........ /dev/sdb1 ..... VG myvg ......... lvm2 [20.00 GiB / 12.00 GiB free]
PV ........ /dev/sda3 ..... VG pve ............ lvm2 [7.87 GiB / 892.00 MiB free]
Total: 2 [27.87 GiB] / in use: 2 [27.87 GiB] / in no VG: 0 [0 ]

knowing that I added this volume in a volume group that I called myvg. using the command myvg vgcreate /dev/drbd0


here are my configuration files: they are the same in both nodes
----- r0.res
resource r0 {


on ahmed {
device /dev/drbd0;
disk /dev/sdb1;
address 192.168.1.200:7788;
meta-disk internal;
}


on zriouil {
device /dev/drbd0;
disk /dev/sdb1;
address 192.168.1.210:7788;
meta-disk internal;
}
}

-----global_common.conf
global {
usage-count no;
# minor-count dialog-refresh disable-ip-verification
}


common {
protocol C;


startup {
wfc-timeout 0;
degr-wfc-timeout 60;
become-primary-on both;
# wfc-timeout degr-wfc-timeout outdated-wfc-timeout wait-after-sb
}


net {
cram-hmac-alg sha1;
shared-secret "my-secret";
allow-two-primaries;
after-sb-0pri discard-zero-changes;
after-sb-1pri discard-secondary;
after-sb-2pri disconnect;


# sndbuf-size rcvbuf-size timeout connect-int ping-int ping-timeout max-buffers
# max-epoch-size ko-count allow-two-primaries cram-hmac-alg shared-secret
# after-sb-0pri after-sb-1pri after-sb-2pri data-integrity-alg no-tcp-cork
}


syncer {
rate 20M;
verify-alg md5;
# rate after al-extents use-rle cpu-mask verify-alg csums-alg
}
}


Best regards,
Thank you in advance

 

[udo]

...
Starting DRBD resources:[ d(r0) 0: Failure: (104) Can not open backing device.
...

Hi,
drbd can't use the device, because you don't filter the device for lvm! in your case lvm was faster and use the /dev/sdXn partition instead of /dev/drbdn.

Read the pve drbd wiki about lvm-filter!

Udo