FC-LS-2 (r2.11 section 4.2.2 item e) requires ELS timeouts to be 2*R_A_TOV -- james s
Joe Eykholt wrote: > Hi all, > > We noticed a problem in a complex fabric with IVR - inter-VSAN routing > with certain targets. > > IVR provides a way for a shared device such as a tape drive to appear > in multiple VSANs by a sort of proxying/NAT setup. It's available on > some MDS switches. > > What happens is that the switches can delay the PLOGI to the target > for longer than the current E_D_TOV (2-second) timeout. When libfc aborts > the PLOGI, the abort causes the target to send back a LOGO. This may > not cause a problem, when we retry, but it would be nicer if we didn't > retry so quickly. > > Other HBAs use a timeout of 2 * R_A_TOV = 20 seconds, I'm told. > > Does anyone see a problem with changing libfc accordingly? > > This shouldn't cause a problem because PLOGI retries should be rare, > but if they do occur would delay target setup by a lot. > > I would keep the FLOGI retry period at 2 seconds, however. > > Thanks, > Joe > _______________________________________________ > devel mailing list > [email protected] > http://www.open-fcoe.org/mailman/listinfo/devel > > _______________________________________________ devel mailing list [email protected] http://www.open-fcoe.org/mailman/listinfo/devel
