> Well, I'd expect that to be safer as your current configuration ... > discard-zero-changes will never overwrite data automatically .... have > you tried adding the start-delay to DRBD start operation? I'm curious if > that is already sufficient for your problem. Hi,
tried <op id="drbd-sas0-start-0" interval="0" name="start" start-delay="10s" timeout="240s"/> (I hope it's the setting You've meant, although I'm not sure, I haven't found any documentation on start-delay option) but didn't help.. > > Regards, > Andreas > > > > >>> > >>> Best Regards, > >>> Andreas > >>> > >>> -- > >>> Need help with Pacemaker? > >>> http://www.hastexo.com/now > >>> > >>>> > >>>> thanks for Your time. > >>>> n. > >>>> > >>>> > >>>>> > >>>>> Regards, > >>>>> Andreas > >>>>> > >>>>> -- > >>>>> Need help with Pacemaker? > >>>>> http://www.hastexo.com/now > >>>>> > >>>>>> > >>>>>> thanks a lot in advance > >>>>>> > >>>>>> nik > >>>>>> > >>>>>> > >>>>>> On Sun, Jul 08, 2012 at 12:47:16AM +0200, Andreas Kurz wrote: > >>>>>>> On 07/02/2012 11:49 PM, Nikola Ciprich wrote: > >>>>>>>> hello, > >>>>>>>> > >>>>>>>> I'm trying to solve quite mysterious problem here.. > >>>>>>>> I've got new cluster with bunch of SAS disks for testing purposes. > >>>>>>>> I've configured DRBDs (in primary/primary configuration) > >>>>>>>> > >>>>>>>> when I start drbd using drbdadm, it get's up nicely (both nodes > >>>>>>>> are Primary, connected). > >>>>>>>> however when I start it using corosync, I always get split-brain, > >>>>>>>> although > >>>>>>>> there are no data written, no network disconnection, anything.. > >>>>>>> > >>>>>>> your full drbd and Pacemaker configuration please ... some snippets > >>>>>>> from > >>>>>>> something are very seldom helpful ... > >>>>>>> > >>>>>>> Regards, > >>>>>>> Andreas > >>>>>>> > >>>>>>> -- > >>>>>>> Need help with Pacemaker? > >>>>>>> http://www.hastexo.com/now > >>>>>>> > >>>>>>>> > >>>>>>>> here's drbd resource config: > >>>>>>>> primitive drbd-sas0 ocf:linbit:drbd \ > >>>>>>>> params drbd_resource="drbd-sas0" \ > >>>>>>>> operations $id="drbd-sas0-operations" \ > >>>>>>>> op start interval="0" timeout="240s" \ > >>>>>>>> op stop interval="0" timeout="200s" \ > >>>>>>>> op promote interval="0" timeout="200s" \ > >>>>>>>> op demote interval="0" timeout="200s" \ > >>>>>>>> op monitor interval="179s" role="Master" timeout="150s" \ > >>>>>>>> op monitor interval="180s" role="Slave" timeout="150s" > >>>>>>>> > >>>>>>>> ms ms-drbd-sas0 drbd-sas0 \ > >>>>>>>> meta clone-max="2" clone-node-max="1" master-max="2" > >>>>>>>> master-node-max="1" notify="true" globally-unique="false" > >>>>>>>> interleave="true" target-role="Started" > >>>>>>>> > >>>>>>>> > >>>>>>>> here's the dmesg output when pacemaker tries to promote drbd, > >>>>>>>> causing the splitbrain: > >>>>>>>> [ 157.646292] block drbd2: Starting worker thread (from drbdsetup > >>>>>>>> [6892]) > >>>>>>>> [ 157.646539] block drbd2: disk( Diskless -> Attaching ) > >>>>>>>> [ 157.650364] block drbd2: Found 1 transactions (1 active extents) > >>>>>>>> in activity log. > >>>>>>>> [ 157.650560] block drbd2: Method to ensure write ordering: drain > >>>>>>>> [ 157.650688] block drbd2: drbd_bm_resize called with capacity == > >>>>>>>> 584667688 > >>>>>>>> [ 157.653442] block drbd2: resync bitmap: bits=73083461 > >>>>>>>> words=1141930 pages=2231 > >>>>>>>> [ 157.653760] block drbd2: size = 279 GB (292333844 KB) > >>>>>>>> [ 157.671626] block drbd2: bitmap READ of 2231 pages took 18 jiffies > >>>>>>>> [ 157.673722] block drbd2: recounting of set bits took additional 2 > >>>>>>>> jiffies > >>>>>>>> [ 157.673846] block drbd2: 0 KB (0 bits) marked out-of-sync by on > >>>>>>>> disk bit-map. > >>>>>>>> [ 157.673972] block drbd2: disk( Attaching -> UpToDate ) > >>>>>>>> [ 157.674100] block drbd2: attached to UUIDs > >>>>>>>> 0150944D23F16BAE:0000000000000000:8C175205284E3262:8C165205284E3263 > >>>>>>>> [ 157.685539] block drbd2: conn( StandAlone -> Unconnected ) > >>>>>>>> [ 157.685704] block drbd2: Starting receiver thread (from > >>>>>>>> drbd2_worker [6893]) > >>>>>>>> [ 157.685928] block drbd2: receiver (re)started > >>>>>>>> [ 157.686071] block drbd2: conn( Unconnected -> WFConnection ) > >>>>>>>> [ 158.960577] block drbd2: role( Secondary -> Primary ) > >>>>>>>> [ 158.960815] block drbd2: new current UUID > >>>>>>>> 015E111F18D08945:0150944D23F16BAE:8C175205284E3262:8C165205284E3263 > >>>>>>>> [ 162.686990] block drbd2: Handshake successful: Agreed network > >>>>>>>> protocol version 96 > >>>>>>>> [ 162.687183] block drbd2: conn( WFConnection -> WFReportParams ) > >>>>>>>> [ 162.687404] block drbd2: Starting asender thread (from > >>>>>>>> drbd2_receiver [6927]) > >>>>>>>> [ 162.687741] block drbd2: data-integrity-alg: <not-used> > >>>>>>>> [ 162.687930] block drbd2: drbd_sync_handshake: > >>>>>>>> [ 162.688057] block drbd2: self > >>>>>>>> 015E111F18D08945:0150944D23F16BAE:8C175205284E3262:8C165205284E3263 > >>>>>>>> bits:0 flags:0 > >>>>>>>> [ 162.688244] block drbd2: peer > >>>>>>>> 7EC38CBFC3D28FFF:0150944D23F16BAF:8C175205284E3263:8C165205284E3263 > >>>>>>>> bits:0 flags:0 > >>>>>>>> [ 162.688428] block drbd2: uuid_compare()=100 by rule 90 > >>>>>>>> [ 162.688544] block drbd2: helper command: /sbin/drbdadm > >>>>>>>> initial-split-brain minor-2 > >>>>>>>> [ 162.691332] block drbd2: helper command: /sbin/drbdadm > >>>>>>>> initial-split-brain minor-2 exit code 0 (0x0) > >>>>>>>> > >>>>>>>> to me it seems to be that it's promoting it too early, and I also > >>>>>>>> wonder why there is the > >>>>>>>> "new current UUID" stuff? > >>>>>>>> > >>>>>>>> I'm using centos6, kernel 3.0.36, drbd-8.3.13, pacemaker-1.1.6 > >>>>>>>> > >>>>>>>> could anybody please try to advice me? I'm sure I'm doing something > >>>>>>>> stupid, but can't figure out what... > >>>>>>>> > >>>>>>>> thanks a lot in advance > >>>>>>>> > >>>>>>>> with best regards > >>>>>>>> > >>>>>>>> nik > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> _______________________________________________ > >>>>>>>> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > >>>>>>>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker > >>>>>>>> > >>>>>>>> Project Home: http://www.clusterlabs.org > >>>>>>>> Getting started: > >>>>>>>> http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > >>>>>>>> Bugs: http://bugs.clusterlabs.org > >>>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>>> _______________________________________________ > >>>>>>> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > >>>>>>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker > >>>>>>> > >>>>>>> Project Home: http://www.clusterlabs.org > >>>>>>> Getting started: > >>>>>>> http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > >>>>>>> Bugs: http://bugs.clusterlabs.org > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> _______________________________________________ > >>>>>> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > >>>>>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker > >>>>>> > >>>>>> Project Home: http://www.clusterlabs.org > >>>>>> Getting started: > >>>>>> http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > >>>>>> Bugs: http://bugs.clusterlabs.org > >>>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>> > >>>> > >>>> > >>>>> _______________________________________________ > >>>>> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > >>>>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker > >>>>> > >>>>> Project Home: http://www.clusterlabs.org > >>>>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > >>>>> Bugs: http://bugs.clusterlabs.org > >>>> > >>>> > >>>> -- > >>>> ------------------------------------- > >>>> Ing. Nikola CIPRICH > >>>> LinuxBox.cz, s.r.o. > >>>> 28.rijna 168, 709 00 Ostrava > >>>> > >>>> tel.: +420 591 166 214 > >>>> fax: +420 596 621 273 > >>>> mobil: +420 777 093 799 > >>>> www.linuxbox.cz > >>>> > >>>> mobil servis: +420 737 238 656 > >>>> email servis: ser...@linuxbox.cz > >>>> ------------------------------------- > >>>> > >>>> _______________________________________________ > >>>> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > >>>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker > >>>> > >>>> Project Home: http://www.clusterlabs.org > >>>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > >>>> Bugs: http://bugs.clusterlabs.org > >>>> > >>> > >>> > >>> > >>> > >>> _______________________________________________ > >>> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > >>> http://oss.clusterlabs.org/mailman/listinfo/pacemaker > >>> > >>> Project Home: http://www.clusterlabs.org > >>> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > >>> Bugs: http://bugs.clusterlabs.org > >>> > >> > >> _______________________________________________ > >> Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > >> http://oss.clusterlabs.org/mailman/listinfo/pacemaker > >> > >> Project Home: http://www.clusterlabs.org > >> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > >> Bugs: http://bugs.clusterlabs.org > >> > > > > > > > > _______________________________________________ > > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > > > Project Home: http://www.clusterlabs.org > > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > > Bugs: http://bugs.clusterlabs.org > > > > > > -- > Need help with Pacemaker? > http://www.hastexo.com/now > > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org -- ------------------------------------- Ing. Nikola CIPRICH LinuxBox.cz, s.r.o. 28.rijna 168, 709 00 Ostrava tel.: +420 591 166 214 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: ser...@linuxbox.cz -------------------------------------
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_______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org