Hans, I respond inline, Phani -----Original Message----- From: Hans Feldt [mailto:[EMAIL PROTECTED] Sent: Monday, November 05, 2007 8:54 PM To: Marella P-G19460 Cc: [email protected] Subject: Re: [Users] Purpose of tipc_reset.sh?
Marella P-G19460 wrote: > Hans, > > The purpose is to stall (MDS based) communication, with a node that has > exited cluster, as soon as possible. So AVD-AVND heartbeating discovers that a node has left before TIPC, is that correct? [Phani] Yes, if TIPC's link-tolerance is set to a higher value than the default (1.5s). [/Phani] BOM xml contains: > <NCSScalars> > <sndHbInt>1000</sndHbInt> > <rcvHbInt>3000</rcvHbInt> > <clusterInitTime>40000</clusterInitTime> > </NCSScalars> These configuration values determine the characteristics of the AVD-AVD and AVD-AVND heartbeats? [Phani] Yes for AVD-AVND heartbeats but I am not sure about the AVD-AVD part. [/Phani] === Regards, Hans P.S. An idea, AVD-AVND heartbeating could be removed and instead OpenSAF could use the TIPC topology service? [Phani] I agree with Sayan and Chads' response in this regard (pl. see thread spawned by Chad for this) [/Phani] > > ----------- > Example: > Assume a system with nodes named A,B,C and D. If the node D were to > exit the system, then "AVNDs" on A,B and C would get a message saying > "node D has left the cluster". This would cause invocation of > "tipc_reset.h" in A,B and C nodes to disconnect them from D. The > expected result is that the TIPC links towards D (viz A<->D, B<->D, > C<->D) get immediately disabled. > ----------- > > This feature is useful if the TIPC link tolerance (== link health-check > timeout) is set to value higher than the default 1.5s. A higher TIPC > link tolerance avoids unnecessary TIPC connection failures in scenarios > where a temporary link failure (and its resolution) takes greater than > 1.5s. Due to lack of a better link reset/disable support in TIPC, > "tipc_reset.sh" uses a workaround of temporarily bringing down the link > tolerance to a low value. > > Hope this helps. > > Regards, > Phani > > PS: AVND = Availability Node Director (part of SCAP/PCAP executables) > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Hans Feldt > Sent: Monday, November 05, 2007 6:12 PM > To: [email protected] > Subject: [Users] Purpose of tipc_reset.sh? > > I currently don't have tipc_reset.sh working since tipc-config > is not in > /opt/TIPC (and it will never be). But what is the purpose of this > script? I can see it is used by avnd when a node has left the cluster. > > Regards, > Hans > _______________________________________________ > Users mailing list > [email protected] > http://list.opensaf.org/maillist/listinfo/users > _______________________________________________ Users mailing list [email protected] http://list.opensaf.org/maillist/listinfo/users
