On 2/17/12 6:56 AM, Lawrence Strydom wrote:
Couldn't find any PingAck's in the syslog - what else could have caused the split brain?
./syslog.2:Feb 15 13:40:35 web02 kernel: [ 16.455206] block drbd0: self D3CCDACF6FD7FDB8:4579E80074D400D3:C117CFF0A5777F0F:0000000000000004 bits:14607528 flags:0 ./syslog.2:Feb 15 13:40:35 web02 kernel: [ 16.455211] block drbd0: peer 37C841BC2AA49AC4:4579E80074D400D3:C117CFF0A5777F0F:0000000000000004 bits:1407177 flags:0 ./syslog.2:Feb 15 13:40:35 web02 kernel: [ 16.455215] block drbd0: uuid_compare()=100 by rule 90 ./syslog.2:Feb 15 13:40:35 web02 kernel: [ 16.455217] block drbd0: Split-Brain detected, dropping connection! Was this ever really primary/primary, uptodate/uptodate? I can't find anything in the logs indicating that it was ever truly dual primary. Your logs seem to rotate quickly, so if you are really only keeping logs going back three days you'll probably never know root cause. Personally, I'd bypass the switch and go with a cross-connect direct between the boxes - Or two if you have enough NICs.
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