[DRBD-user] Double disconnect problem

[taibi souad]

hello,

I use drbd-0.7.7 with Redhat-7.3, The connection between the nodes of 
the cluster passes through a VPN link.

I have frequent deconnections of the drbd, and sometimes it fails to 
reconnect automatically, and transitions to StandAlone state instead. It 
may be a bug.

Here are the logs. In particular I'd like to know how I should interpret 
the 20-second delays between Unconnected --> WFConnection and 
WFConnection --> WFReportParams. Could a network outage cause this? If 
so how?

Kind regards,

==============================================================
Log  of master
==============================================================

Nov 3 19:57:19 kernel: drbd0: PingAck did not arrive in time.
Nov 3 19:57:19 kernel: drbd0: drbd0_asender [29742]: cstate Connected 
--> NetworkFailure
Nov 3 19:57:19 kernel: drbd0: asender terminated
Nov 3 19:57:19 kernel: drbd0: drbd0_receiver [1594]: cstate 
NetworkFailure --> BrokenPipe
Nov 3 19:57:19 kernel: drbd0: short read expecting header on sock: r=-512
Nov 3 19:57:19 kernel: drbd0: worker terminated
Nov 3 19:57:19 kernel: drbd0: drbd0_receiver [1594]: cstate BrokenPipe 
--> Unconnected
Nov 3 19:57:19 kernel: drbd0: Connection lost.
Nov 3 19:57:19 kernel: drbd0: drbd0_receiver [1594]: cstate Unconnected 
--> WFConnection
Nov 3 19:57:39 kernel: drbd0: drbd0_receiver [1594]: cstate WFConnection 
--> WFReportParams
Nov 3 19:57:39 kernel: drbd0: sock_sendmsg returned -104
Nov 3 19:57:39 kernel: drbd0: drbd0_receiver [1594]: cstate 
WFReportParams --> BrokenPipe
Nov 3 19:57:39 kernel: drbd0: short sent HandShake size=80 sent=0
Nov 3 19:57:39 kernel: drbd0: Discarding network configuration.
Nov 3 19:57:39 kernel: drbd0: worker terminated
Nov 3 19:57:39 kernel: drbd0: drbd0_receiver [1594]: cstate BrokenPipe 
--> Unconnected
Nov 3 19:57:39 kernel: drbd0: Connection lost.
Nov 3 19:57:39 kernel: drbd0: drbd0_receiver [1594]: cstate Unconnected 
--> StandAlone

==============================================================
Log  of  slave
==============================================================

Nov 3 19:57:19 kernel: drbd0: meta connection shut down by peer.
Nov 3 19:57:19 kernel: drbd0: drbd0_asender [31505]: cstate Connected 
--> NetworkFailure
Nov 3 19:57:19 kernel: drbd0: asender terminated
Nov 3 19:57:19 kernel: drbd0: drbd0_receiver [25347]: cstate 
NetworkFailure --> BrokenPipe
Nov 3 19:57:19 kernel: drbd0: short read expecting header on sock: r=-512
Nov 3 19:57:19 kernel: drbd0: worker terminated
Nov 3 19:57:19 kernel: drbd0: drbd0_receiver [25347]: cstate BrokenPipe 
--> Unconnected
Nov 3 19:57:19 kernel: drbd0: Connection lost.
Nov 3 19:57:19 kernel: drbd0: drbd0_receiver [25347]: cstate Unconnected 
--> WFConnection

==============================================================
Configuration
==============================================================

global {
    minor-count 2;
    dialog-refresh 5; # 5 seconds
}
resource foo {
 protocol C;
 incon-degr-cmd "echo '!DRBD! pri on incon-degr' | wall ; sleep 60 ; 
halt -f";
 startup {
    wfc-timeout  120;
    degr-wfc-timeout 0;    # 2 minutes.
 }
 disk {
   on-io-error   detach;
 }
 net {
    sndbuf-size 2M;
    timeout 100;
    connect-int 14;
    ping-int 14;
    on-disconnect reconnect;
    }

syncer {
   rate 4M;
   group 1;
   al-extents 257;
 }
 on slave {
   device     /dev/drbd0;
   disk       /dev/cciss/c0d0p2 ;
   address    10.16.29.97:7788;
   meta-disk  internal;
 }
 on master {
   device    /dev/drbd0;
   disk       /dev/cciss/c0d0p2 ;
   address      10.16.7.129:7788;
   meta-disk internal;
 }
}