[DRBD-user] drbd 0.8 rc1 active/active

Jean Chiappini Jean.Chiappini at virtua.ch
Fri Jan 12 16:02:19 CET 2007


Hello,

I'm testing the drbd 0.8 rc1 with the option active/active. I use the
software bonnie++ to stress a lot the hard disk and the sync between my
two nodes. At this time I use drbd 0.8rc1 with heartbeat to load balance
two IP, one for a nfs share and the other for sharedance. In the future,
I will use GFS to share the drdb disk. All work good if the two nodes
are alive, but when I make a test to cut one node (I stop heartbeat),
the system become unstable and the two nodes reboot in loop.

This is my setup :

drbd.conf :
global { usage-count yes; }
        common { syncer { rate 100M; }}

        resource sharedance {
            protocol C;
            disk { on-io-error detach;}
            #handlers { incon-degr-cmd "halt -f";}
            net {
                 cram-hmac-alg sha1;
                 shared-secret "FooFunFactory";
                 allow-two-primaries;
            }
            on node1 {
                 device    /dev/drbd0;
                 disk      /dev/md3;
                 address   10.0.0.1:7789;
                 meta-disk  internal;
            }
            on node2 {
                 device    /dev/drbd0;
                 disk      /dev/md3;
                 address   10.0.0.2:7789;
                 meta-disk  internal;
            }
       }


       resource webcontent {
            protocol C;
            disk { on-io-error detach;}
            net {
                 cram-hmac-alg sha1;
                 shared-secret "FooFunFactory";
                 allow-two-primaries;
            }
            on node1 {
                 device    /dev/drbd1;
                 disk      /dev/md4;
                 address   10.0.0.1:7790;
                 meta-disk  internal;
            }
            on node2 {
                 device    /dev/drbd1;
                 disk      /dev/md4;
                 address   10.0.0.2:7790;
                 meta-disk  internal;
            }
       }

haresources :
node1  \
                        Filesystem::/dev/drbd1::/share/spool1::xfs \
                        Delay::3::0 \
                        nfs-common \
                        nfs-kernel-server \
                        Delay::3::0 \
                        IPaddr2::192.168.200.151/24/eth0

node2  \
                        Filesystem::/dev/drbd0::/share/spool0::ext3 \
                        Delay::3::0 \
                        IPaddr2::192.168.200.152/24/eth0


It is a bug of drbd 0.8 rc1 or my setup is not good configured ?

Thank you in advance

Regards

Jean




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