[DRBD-user] DRBD8 and bonded interfaces

Brian Candler B.Candler at pobox.com
Fri Jun 13 15:37:16 CEST 2008

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On Fri, Jun 13, 2008 at 02:26:14PM +0200, Michał Szpadzik wrote:
> asgard:~# ping -I
> PING ( from : 56(84) bytes of data.
> 64 bytes from icmp_seq=1 ttl=64 time=0.201 ms
> 64 bytes from icmp_seq=2 ttl=64 time=0.146 ms
> 64 bytes from icmp_seq=3 ttl=64 time=0.142 ms
> 64 bytes from icmp_seq=4 ttl=64 time=0.163 ms
> 64 bytes from icmp_seq=5 ttl=64 time=0.145 ms
> 64 bytes from icmp_seq=6 ttl=64 time=0.169 ms
> 64 bytes from icmp_seq=7 ttl=64 time=0.147 ms

OK. A few more suggestions then:

(1) netstat -natp    # on both machines

Before connecting, I'd expect to see listening ports:

tcp        0      0*              LISTEN

After drbdadm connect from the far side, I'd expect to see something like

tcp        0      0     ESTABLISHED

(2) telnet 7788

(assuming the other side says LISTEN). Does drbd accept a connection?

(3) tcpdump -i bond0 -nn -s0 -v

When you drbdadm connect, do you see TCP SYNs for the ports which drbd is
configured to use?

(4) Do you have selinux enforcing? Do you have iptables rules? If so, try
disabling them both temporarily.



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