If don't use the qdisk who is the master in the split-brain? Who take the resources?
What are you concerns about fence_scsi? fence_scsi in redhat 5.X doesn't reboot the node, the fenced node neve release the resources Why redhat made the qdisk as Tie-breakers and some people from support say it's one optional or some time says is not needed? Il giorno 12 aprile 2012 17:51, Ryan O'Hara <[email protected]> ha scritto: > On 04/12/2012 10:18 AM, emmanuel segura wrote: > >> That's right >> >> you'll found your cluster partitioned and if you "<cman two_node="1" >> expected_votes="1">" as redhat setting our cluster maybe you get data >> corruption >> > > How? What fence agent are you using? I've used this configuration for > years and never had data corruption. > > > Because every node can operate with one vote an rich the quorum state >> >> Forse the fencing problem redhat implement a work around as permanent >> solution >> >> fence delay for some cluster agents >> >> For fence_scsi in Redhat 5.X the redhat support says it's ok for >> production >> BAAAAA not tre >> > > What are you concerns about fence_scsi? > > > AND i the redhat technical tells the cluster don't require the quorum disk >> UMMMMMMMMMMMMM >> > > Can you explain why qdisk would be required? > > Ryan > > > Il giorno 12 aprile 2012 16:47, Daniel Bourque >> <[email protected]>ha scritto: >> >> A qdisk is just another way to maintain quorum in cluster. there is a >>> special two node cluster mode designed to allow for quorum to be >>> maintained >>> by the surviving node. >>> >>> <cman two_node="1" expected_votes="1"> >>> </cman> >>> >>> But it's not very clear to me what happens with fencing if both nodes >>> get partitioned on the network. Do they both try to fence each other off >>> ? >>> >>> >>> -- >>> Dan >>> >>> ------------------------------ >>> *From:* >>> linux-cluster-bounces@redhat.**com<[email protected]>[ >>> linux-cluster-bounces@redhat.**com <[email protected]>] >>> >>> on behalf of emmanuel segura [[email protected]] >>> *Sent:* Thursday, April 12, 2012 9:25 AM >>> *To:* linux clustering >>> *Subject:* [Linux-cluster] Redhat without qdisk >>> >>> >>> Hello all List >>> >>> I have a big question about qdisk in a two cluster >>> >>> one of out clients has too many cluster in two nodes configuration and >>> one >>> RedHat technical came to us and said that there is no need to use the >>> qdisk >>> >>> I would to know if this is true >>> >>> I really think it's a bad idea >>> >>> -- >>> esta es mi vida e me la vivo hasta que dios quiera >>> >>> -- >>> Linux-cluster mailing list >>> [email protected] >>> https://www.redhat.com/**mailman/listinfo/linux-cluster<https://www.redhat.com/mailman/listinfo/linux-cluster> >>> >>> >> >> >> >> >> -- >> Linux-cluster mailing list >> [email protected] >> https://www.redhat.com/**mailman/listinfo/linux-cluster<https://www.redhat.com/mailman/listinfo/linux-cluster> >> > > -- > Linux-cluster mailing list > [email protected] > https://www.redhat.com/**mailman/listinfo/linux-cluster<https://www.redhat.com/mailman/listinfo/linux-cluster> > -- esta es mi vida e me la vivo hasta que dios quiera
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