[Linux-HA] DBRD - split brain - and HA is happily migrating

[Thomas Glanzmann]

Hello Dominik,

> Thanks. I adopted my configuration and test if it works as desired.

Thanks for your help. It looks like everything works as desired:

(postgres-02) [~] ifconfig eth1 down
(postgres-02) [~] cat /proc/drbd
version: 8.2.1 (api:86/proto:86-87)
GIT-hash: 318925802fc2638479ad090b73d7af45503dd184 build by tg at apache-01, 2007-12-29 17:37:25
 0: cs:WFConnection st:Secondary/Unknown ds:Outdated/DUnknown C r---
    ns:60499852 nr:713732 dw:713732 dr:60499852 al:0 bm:3693 lo:0 pe:0 ua:0 ap:0
        resync: used:0/31 hits:3777806 misses:3724 starving:0 dirty:0 changed:3724
        act_log: used:0/127 hits:0 misses:0 starving:0 dirty:0 changed:0
(postgres-02) [~] ifconfig eth1 up
(postgres-02) [~] cat /proc/drbd
version: 8.2.1 (api:86/proto:86-87)
GIT-hash: 318925802fc2638479ad090b73d7af45503dd184 build by tg at apache-01, 2007-12-29 17:37:25
 0: cs:WFConnection st:Secondary/Unknown ds:Outdated/DUnknown C r---
    ns:60499852 nr:713732 dw:713732 dr:60499852 al:0 bm:3693 lo:0 pe:0 ua:0 ap:0
        resync: used:0/31 hits:3777806 misses:3724 starving:0 dirty:0 changed:3724
        act_log: used:0/127 hits:0 misses:0 starving:0 dirty:0 changed:0
(postgres-02) [~] cat /proc/drbd
version: 8.2.1 (api:86/proto:86-87)
GIT-hash: 318925802fc2638479ad090b73d7af45503dd184 build by tg at apache-01, 2007-12-29 17:37:25
 0: cs:Connected st:Secondary/Primary ds:UpToDate/UpToDate C r---
    ns:60499852 nr:715292 dw:715292 dr:60499852 al:0 bm:3705 lo:0 pe:0 ua:0 ap:0
        resync: used:0/31 hits:3777942 misses:3736 starving:0 dirty:0 changed:3736
        act_log: used:0/127 hits:0 misses:0 starving:0 dirty:0 changed:0

When I put the crosslink link down, the disk on postgres-02 gets outdated, if I
put it back on, it syncs in no-time.

        Thomas