Any shadow server messages in the operator log? What's SHADOW_MAX_COPY set to?
Lennert Van Alboom <[email protected]> wrote: >Hello there. > > >I'm running into issues with disk shadowing in VMS between two SIMH instances. >My setup is as follows: > >- 2 SIMH VAX instances running VMS 7.3, fully licensed using hobbyist licenses: > WHISKY and COGNAC >- Networking was setup using the "taptap" method as described in > http://www.retrocomputinggeek.com/retrowiki/SIMHNetworking >- Both SIMH network tunX devices are on the same bridge (br0) on the same linux > host >- DECnet and TCPIP configured and confirmed to be working on both machines: > WHISKY (1.1, x.y.z.240), COGNAC (1.2, x.y.z.241) >- VAXcluster enabled between both instances: WHISKY has VOTES=1, COGNAC > VOTES=0, cluster EXPECTED_VOTES=1 with no quorum disk >- ALLOCLASS for WHISKY is set to 240, COGNAC to 241 > >The Linux host itself is a Xen virtual machine; this is the main reason why I >didn't go for a "dedicated" network interface per simh instance, as this >doesn't play nice with the bridges on the Xen VM host. > >At this point, I wanted to play with disk shadowing. Each of the SIMH VAXen has >two disks; one for system (DUA0:), one 'spare' (DUA1:). Both are of type RA90 >(1GB). The idea was to shadow those two 'spare' disks. > >Commands issued: > >$ INIT/ERASE $240$DUA1: CLUSTERDATA >$ INIT/ERASE $241$DUA1: CLUSTERDATA >$ MOUNT/SYSTEM/CLUSTER DSA0: /SHADOW=($240$DUA1:,$241$DUA1:) CLUSTERDATA >CLUSTERDATA > >At this point, the shadow disk is being created and mounted on both nodes. No >issues there. But the disk copy never actually kicks off: > >$ SHOW DEV CLUSTERDATA > >Device Device Error Volume Free Trans >Mnt > Name Status Count Label Blocks Count > Cnt > DSA0: Mounted 0 CLUSTERDATA 2375847 1 > 2 > $240$DUA1: (WHISKY) ShadowSetMember 0 (member of DSA0:) > $241$DUA1: (COGNAC) ShadowCopying 0 (copy trgt DSA0: 0% copied) > > >Even after 12 hours, it's still at 0%; I think it's safe to say it's not going >to go up. Has anyone ever attempted to do disk shadowing between two SIMH >instances, and if yes, do you have any idea what might be causing this problem? > > >Thanks, > > >Lennert >_______________________________________________ >Simh mailing list >[email protected] >http://mailman.trailing-edge.com/mailman/listinfo/simh _______________________________________________ Simh mailing list [email protected] http://mailman.trailing-edge.com/mailman/listinfo/simh
