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| Title: | dec_mls_plus |
|
| Moderator: | SMURF::BAT |
|
| Created: | Mon Nov 29 1993 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 534 |
| Total number of notes: | 2544 |
491.0. "KZPSA Data Corruption Blitz" by SMURF::BAT (Segui la tua beatitudine) Thu Apr 24 1997 22:51
Date: Tue, 22 Apr 1997 17:47:44 -0400 (EDT)
From: John Donovan USG <[email protected]>
To: "blitz.dis" <[email protected]>, [email protected],
[email protected], [email protected],
Dianna Ellis UNIX Presales <[email protected]>,
[email protected], [email protected],
[email protected], [email protected],
Allan Malcolm USG <[email protected]>, [email protected],
[email protected], Neil Davies <[email protected]>,
USEG Problem Management -- Brian Axtell <[email protected]>,
Henry Bone <[email protected]>, Ronald Uberti <[email protected]>,
Tom Hayden <[email protected]>, [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
Cc: John Donovan <[email protected]>
Subject: KZPSA Data Corruption
Message-Id: <[email protected]>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
+---------------------------+TM
| | | | | | | |
| d | i | g | i | t | a | l | TIME DEPENDENT BLITZ
| | | | | | | |
+---------------------------+
BLITZ TITLE: KZPSA Data Corruption
DATE:23 April 1997
AUTHOR: John Donovan TD #:
DTN: 381-1344
ENET: KAMLIA::DONOVAN CROSS REFERENCE #'s:
DEPARTMENT: USEG (PRISM/TIME/CLD#'s)
INTENDED AUDIENCE: PRIORITY LEVEL: 1
(U.S./EUROPE/GIA) (1=TIME CRITICAL,
2=NON-TIME CRITICAL)
=====================================================================
PROBLEM:
Disk data corruption can occur very intermittently under conditions
of heavy I/O on a scsi device attached to a KZPSA SCSI Adapter. This
happens when a read or a write request to a disk inadvertently gets
routed to some other disk attached to the same KZPSA.
RESOLUTION/WORKAROUND:
The official change is going into the pools now. Until the official
patch is available, there is a test patch available for the following
releases:
v3.2c, v3.2de-1, v3.2de-2, v3.2f, v3.2g, v4.0, v4.0a, v4.0b
in:
guru:/usr/guest/misc/osf/simport/*.tar
ADDITIONAL COMMENTS:
This simport patch MUST be installed on every system containing a
KZPSA in order to prevent corruption of user data being written to
or read from disk.
*** DIGITAL INTERNAL USE ONLY ***
\\ GRP=TIME_DEPENDENT CAT=HARDWARE DB=CSSE_TIME_CRITICAL
\\ TYPE=KNOWN_PROBLEM TYPE=BLITZ STATUS=CURRENT
| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 491.1 | just fyi | SMURF::BAT | Segui la tua beatitudine | Thu Apr 24 1997 22:52 | 3 |
| If any customer reports this problem, we'll port the base OSF fixes to
MLS+ and make available. Else this will be held until the next patch
kit release.
|
| 491.2 | Reactive only? | RDGENG::SPILLANED | | Fri Apr 25 1997 09:26 | 8 |
|
The Digital UNIX blitz states that the patch *must* be installed
on all systems with KZPSA. Is the assessment such that it is
acceptable that data corruption occurs prior to the fix being
applied to MLS+ ?
Customer's who have Digital UNIX and MLS+ and see the blitz
message may ask the same question.
|
| 491.3 | But it needn't be installed on systems w/out KZPSA | SMURF::BAT | Segui la tua beatitudine | Fri Apr 25 1997 13:44 | 5 |
| No. My assessment was: if you have KZPSA, say so, we'll build
it and send it out. I have no idea what people have and do not have,
and wasn't going to take the time to build something no one wanted.
I'm sorry I'm so hardware naive, are you telling me that everyone has
this?
|
| 491.4 | | COMICS::CORNEJ | What's an Architect? | Mon Apr 28 1997 05:37 | 7 |
| DOVER uses KZPSAs on V3.1a. any idea as to when the fix will be
available?
Cheers,
Jc
|
| 491.5 | then I'll let you know if it takes more than 2 shakes | SMURF::BAT | Segui la tua beatitudine | Mon Apr 28 1997 19:21 | 2 |
| No, but I'll start on it now (or when the last interruption is popped
off the stack).
|
| 491.6 | | COMICS::CORNEJ | What's an Architect? | Fri May 09 1997 06:33 | 6 |
| Your 2 shakes are up :-)
Seriously, any news?
Jc
|
| 491.7 | Sitting in my out box | SMURF::BAT | Segui la tua beatitudine | Mon May 12 1997 12:54 | 3 |
| Yes, I have a patch backport, but I haven't had any time to test it.
I hope to do so today and will let you know ASAP.
|
| 491.8 | and I've done a submit request: 6260 once reviewed | SMURF::BAT | Segui la tua beatitudine | Mon May 12 1997 21:40 | 7 |
| There is a test patch available in:
ftp psycho.zk3.dec.com
anonymous
cd pub/simport
get simport.o
get README
|