*clean_start:* Used to prevent any start up fencing the daemon might do. It indicates that the daemon should assume all nodes are in a clean state to start.
So if the cluster network has problem and my cluster is in the spli-brain situation, fencing loop happen, for avoid this situation you have the following choices 1: disable you cluster sotfware to start in the boot time 2: use clean_start=1 with qdisk without expected_votes=1(rgmanager never start the service on node without enaugh vote) 3:change the cluster software :) Nobody explain me with a technical reason why clean_start=1 is dangerous, so configurare and test well with different parameters your cluster and like that you can understand RHCS 2013/9/12 emmanuel segura <emi2f...@gmail.com> > Fixed previous mail > > clean_start=1 disable the startup fencing and if you use a quorum disk in > your cluster without expected_votes=1, when a node start after it has been > fenced, the node dosn't try to fence di remain node and doesn't try to > start the service, because rgmanager need a cluster quorate, so many people > around say clean_start=1 is dangerous, but no one give a clear reason, in > my production cluster a i have clvm+vg in exclusive > mode+(clean_start=1)+(master_ > wins). so if you can explain me where is the problem :) i apriciate > > > > 2013/9/11 Digimer <li...@alteeve.ca> > >> On 11/09/13 12:04, emmanuel segura wrote: >> >>> Hello Pascal >>> >>> For disable startup fencing you need clean_start=1 in the fence_daemon >>> tag, i saw in your previous mail you are using expected_votes="1", with >>> this setting every cluster node will be partitioned into two clusters >>> and operate independently, i recommended using a quorim disk with >>> master_wins parameter >>> >> >> This is a very bad idea and is asking for a split-brain, the main reason >> fencing exists at all. >> >> >> -- >> Digimer >> Papers and Projects: https://alteeve.ca/w/ >> What if the cure for cancer is trapped in the mind of a person without >> access to education? >> > > > > -- > esta es mi vida e me la vivo hasta que dios quiera > -- esta es mi vida e me la vivo hasta que dios quiera
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