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RE: alert log entries not sequential

From: Carel-Jan Engel <cjpengel.dbalert_at_xs4all.nl>
Date: Wed, 25 Aug 2004 22:27:53 +0200
Message-Id: <1093465673.20098.11.camel@dbalert199.dbalert.nl>


Matt,
When Ik look at this snippet of your logfile:

Sun Aug 22 02:32:14 2004
Shutting down instance (abort)
License high water mark =3D 2
Instance terminated by USER, pid =3D 12911 lter tablespace RBS begin backup
Completed: alter tablespace RBS begin backup Sun Aug 22 02:18:15 2004

I see that the Alter tablespace command isn't written completely, the 'A' is missing. To me it looks like the volume manager's caches being flushed at different times during the 'split brains' period. Is that possible, or every system just had another idea of what blocks to flush? Or is it just a cut/paste error? Is it possible to find out whether the actual shown 'lter tablespace' just appears on a block split in the file? Sorry, I'm not a cluster filesystem specialist, just some guesses.

Best regards,

Carel-Jan Engel

===
If you think education is expensive, try ignorance. (Derek Bok) ===

On Wed, 2004-08-25 at 15:17, Adams, Matthew (GE Consumer & Industrial) wrote:

> No idea at all. We do know for a certainty=20
> that the Veritas Cluster went "split brain"
> (i love that term our sysop came up with)
> and both sides of the cluster thought it owned
> the package in question and both sides mounted,
> opened and wrote to the database files.
>
> But since the clocks are in-sync I cannot come=20
> with a reason that the timestamps on the alert logs
> would be so out of order, even with both sides
> writing to it.



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Received on Wed Aug 25 2004 - 15:30:28 CDT

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