MicroVAX Volume Shadowing

stephenbrayshaw — Wed, 04 Jan 2017 16:15:40 GMT

Hi, I am trying to add a disk to a shadow volume but I get an invalid device name.

What is likely to be the cause, details below ( the sho dev d was run before the mount) ?

VAX/VMS V5.5-2H4

FINE_ARTS2>mount/system DSA0: /shadow = (DKA300:,DKA0:) VAXVMS2H4055
%MOUNT-I-SHDWMEMSUCC, _SYBIL$DKA300: is now a valid member of the shadow set
%MOUNT-I-SHDWMEMFAIL, DKA0: failed as a member of the shadow set
-SYSTEM-F-IVDEVNAM, invalid device name

FINE_ARTS2>sho dev d

Device Device Error Volume Free Trans Mnt
Name Status Count Label Blocks Count Cnt
DSA0: Mounted 0 VAXVMS2H4055 3280230 226 1
SYBIL$DKA0: Online 0
SYBIL$DKA100: Mounted 0 MORE_APPS 69165 4 1
SYBIL$DKA200: Mounted 0 SYBIL_APPS 318066 1 1
SYBIL$DKA300: ShadowSetMember 0 (member of DSA0:)
SYBIL$DKA400: Mounted 0 APPS_4 1001226 9 1
SYBIL$DKA500: Mounted 0 APPS_5 707772 1 1

Thanks

Stephen

Re: MicroVAX Volume Shadowing

Volker Halle — Wed, 04 Jan 2017 16:47:01 GMT

Stephen,

when using shadowing of local disk devices, you need to use a non-zero disk allocation class, so disks are called $n$DKAx: instead of nodename$DKAx:

Set the system parameter ALLOCLASS to a non-zero value (e.g. 1) and reboot the system. Then you can form shadowsets from local disks.

Volker.

topic Re: MicroVAX Volume Shadowing in Operating System - OpenVMS

MicroVAX Volume Shadowing

Re: MicroVAX Volume Shadowing