>>> Ken Gaillot <kgail...@redhat.com> schrieb am 13.10.2016 um 16:49 in >>> Nachricht <97fdafc7-7efe-41d8-99fa-20abb2050...@redhat.com>: > On 10/13/2016 03:36 AM, Ulrich Windl wrote: >> That's what I'm talking about: If 1 of 3 nodes is rebooting (or the cluster > is split-brain 1:2), the single node CANNOT continue due to lack of quorum, > while the remaining two nodes can. Is it still necessary to wait for > completion of stonith? > > If the 2 nodes have working communication with the 1 node, then the 1 > node will leave the cluster in an orderly way, and fencing will not be > involved. In that case, yes, quorum is used to prevent the 1 node from > starting services until it rejoins the cluster.
The $%&/@ problem of a root process having a file open on OCFS prevented the clean unmount of the filesystem. I think newer versions of the RA now even kill root processes. Can anybody explain why root processes were excluded before? > > However, if the 2 nodes lose communication with the 1 node, they cannot > be sure it is functioning well enough to respect quorum. In this case, > they have to fence it. DLM has to wait for the fencing to succeed to be > sure the 1 node is not messing with shared resources. > > > _______________________________________________ > Users mailing list: Users@clusterlabs.org > http://clusterlabs.org/mailman/listinfo/users > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org _______________________________________________ Users mailing list: Users@clusterlabs.org http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org