Re: system halt
From: Rick Saylor (rsaylor_at_AUSTINCC.EDU)
Date: 07/21/05
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Date: Thu, 21 Jul 2005 08:28:26 -0500 To: aix-l@Princeton.EDU
According to my AIX 5L internals book - "A Data Store Interrupt occurs
whenever a reference is made to a virtual address that is not currently
loaded in physical memory". In other words a page fault. Page faults happen
all of the time. But for some reason VMM couldn't handle this one. This
could be a software or hardware problem. Have you updated AIX or devices
drivers recently? Are there other entries in the error log along with this
one?
One more thing, in the AIX Internals class we were taught how to cause a
DSI (from the command line) in order to get a system dump. It is
surprisingly easy but you have to be root to do it. You haven't had any of
your AIX administrators attend the internals class lately?
Rick Saylor
Austin Community College
At 07:16 AM 7/21/2005, you wrote:
>Hello all,
>We recently had a system dump one of our aix 5.2
>boxes. The errpt log gives the following:
>
>LABEL: DSI_PROC
>IDENTIFIER: 9D035E4D
>
>Date/Time: Wed Jul 20 11:03:02 EDT
>Sequence Number: 3921
>Machine Id: 000D277F4C00
>Class: S
>Type: PERM
>Resource Name: SYSVMM
>
>Description
>DATA STORAGE INTERRUPT, PROCESSOR
>
>I have not found too much on the internet that causes
>this or what exactly it is. Anyone have any ideas
>what this is from? Thanks.
>
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