[DRBD-user] Split Brain detected

Martin Gombac( martin at isg.si
Fri Oct 23 15:28:45 CEST 2009

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


Generic answer follows.
See the manual:

http://www.drbd.org/users-guide/s-resolve-split-brain.html
http://www.drbd.org/users-guide/s-configure-split-brain-behavior.html

Regards,
M.

Eugene Shlyapkin wrote:
> Hello everybody
> 
>  
> 
> I have three nodes.
> 
> Aps-1 has app recourse
> 
> Aps-2 has mysql recourse
> 
> Aps-3 has app and mysql resources
> 
>  
> 
> As I founded that Split Barain has take place.
> 
> Please see status the drbd  status:
> 
>  
> 
> sudo /etc/init.d/drbd status
> 
> drbd driver loaded OK; device status:
> 
> version: 8.0.14 (api:86/proto:86)
> 
> GIT-hash: bb447522fc9a87d0069b7e14f0234911ebdab0f7 build by 
> phil at fat-tyre, 2008-11-12 16:40:33
> 
> m:res    cs         st                   ds                 p  mounted  
> fstype
> 
> 0:app    Connected  Secondary/Secondary  UpToDate/UpToDate  C
> 
> 1:mysql  Connected  Secondary/Secondary  UpToDate/Diskless  C
> 
>  
> 
> May be anybody can help me to solve this problem?
> 
>  
> 
> My drbd.conf for aps-3 is:
> 
>  
> 
> global {
> 
>     usage-count yes;
> 
> }
> 
> resource app {
> 
>   protocol C;
> 
>   handlers {
> 
>       pri-on-incon-degr "echo o > /proc/sysrq-trigger ; halt -f";
> 
>       pri-lost-after-sb "echo o > /proc/sysrq-trigger ; halt -f";
> 
>       local-io-error "echo o > /proc/sysrq-trigger ; halt -f";
> 
>       outdate-peer "/usr/lib/heartbeat/drbd-peer-outdater -t 5";
> 
>  }
> 
>   startup {
> 
>      wfc-timeout  30;
> 
>      degr-wfc-timeout 120;    # 2 minutes.
> 
>   }
> 
>   disk {
> 
>    on-io-error pass_on;
> 
>  
> 
>  }
> 
>   net {
> 
> }
> 
>   syncer {
> 
>     rate 20M;
> 
>     al-extents 257;
> 
>   }
> 
>   on aps-3 {
> 
>     device     /dev/drbd0;
> 
>     disk       /dev/sda9;
> 
>     address    10.11.4.3:7788;
> 
>     meta-disk  internal;
> 
>  }
> 
>   on aps-1 {
> 
>     device     /dev/drbd0;
> 
>     disk       /dev/sda8;
> 
>     address    10.11.4.4:7788; #   flexible-meta-disk  internal;
> 
>     meta-disk  internal;
> 
>  }
> 
> }
> 
>  
> 
> resource mysql {
> 
>   protocol C;
> 
>   handlers {
> 
>   pri-on-incon-degr "echo o > /proc/sysrq-trigger ; halt -f";
> 
>   pri-lost-after-sb "echo o > /proc/sysrq-trigger ; halt -f";
> 
>   local-io-error "echo o > /proc/sysrq-trigger ; halt -f";
> 
>   outdate-peer "/usr/lib/heartbeat/drbd-peer-outdater -t 5";
> 
>   }
> 
>   startup {
> 
>   wfc-timeout         30;  ## Infinite!
> 
>   degr-wfc-timeout  120;  ## 2 minutes.
> 
>   }
> 
>   disk {
> 
>    on-io-error pass_on;
> 
>   }
> 
>   net {
> 
>   }
> 
>   syncer {
> 
>       rate 200M;
> 
>       al-extents 257;  }
> 
>  
> 
>   on aps-2 {
> 
>     device     /dev/drbd1;
> 
>     disk       /dev/sda10;
> 
>     address    10.11.4.5:7789;
> 
>     meta-disk  internal;
> 
>   }
> 
>  
> 
>   on aps-3 {
> 
>     device      /dev/drbd1;
> 
>     disk        /dev/sda10;
> 
>     address     10.11.4.3:7789;
> 
>     meta-disk   internal;
> 
>   }
> 
> }
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> drbd-user mailing list
> drbd-user at lists.linbit.com
> http://lists.linbit.com/mailman/listinfo/drbd-user



More information about the drbd-user mailing list