[Simh] [Bulk] SIMH VAXcluster - shadow disk issues

Lennert Van Alboom lennert at vanalboom.org
Mon Jan 23 08:10:34 EST 2012


On Fri, Jan 20, 2012 at 05:17:28PM +0000, Graham Burley wrote:
>Any shadow server messages in the operator log?
>
>What's SHADOW_MAX_COPY set to?


Okay, this is one of these "oh god, kill me" situations :-) turned out that
SHADOW_MAX_COPY, which should have defaulted to 4, was set to zero on both my
machines.

Changed it to 32, and tadah...


%%%%%%%%%%%  OPCOM  23-JAN-2012 14:05:08.30  %%%%%%%%%%%
Message from user SYSTEM on WHISKY
%SHADOW_SERVER-I-SSRVINICPY, initiating copy operation on _DSA0: at LBN: 0, I/O
%size: 127 blocks, ID number: 06000315.

$ show dev shadowdata

Device                  Device           Error    Volume         Free  Trans Mnt
  Name                   Status           Count     Label        Blocks Count Cnt
  DSA0:                   Mounted              0  SHADOWDATA     2375847     1   2
  $240$DUA1:    (WHISKY)  ShadowSetMember      0  (member of DSA0:)
  $241$DUA1:    (COGNAC)  ShadowCopying        0  (copy trgt DSA0:  12% copied)


Many, many thanks for that heads-up! I don't know what deep and dark alley I'd
have stumbled in, trying to troubleshoot this frankenstein setup ;-) and in the
meantime the systems have been patched too, so all is peachy.


Regards,


Lennert



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