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z/VM Service: Red Alerts
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This page is intended to provide information about potential
high-impact items and in some cases prior to the opening of
an APAR. Note that
when a release level reaches the
end of service, we intend to remove the item from the list.
18 April 2011
New/Update Red Alert report for 2011
For more information on the following,
view the
2011 z/VM Red Alert
(18 April 2011)
USERS AFFECTED:
Any customers running Linux on z/VM
For more information on the following,
view the
2010 z/VM Red Alerts
(04 August 2010)
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August 4, 2010
PK97437 - SSL Server Performance and Scalability Enhancements - Packaging
Updates
With this APAR and its associated requisites (listed in the document), TCP/IP
for z/VM provides significant performance and scalability enhancements for the
CMS-based SSL server, introduced with z/VM version 5 release 4.
USERS AFFECTED:
All z/VM customers who have configured the z/VM SSL server and are
running it in a production environment. Customers who acquire these
updates, but have not employed an SSL server within their installation,
do not need to complete the prescribed changes prior to
placing service into production.
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June 23, 2010
VM64793 - New CP function to support protected-key CPACF requires
Coupling Facility microcode support on the IBM System z10.
USERS AFFECTED:
All z/VM customers running guest coupling support when they have both an
IBM System z10 and the PTF for APAR VM64793.
For more information on the following,
view the
2009 z/VM Red Alerts
(28 October 2009)
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October 28, 2009
PK98608 OSA-EXPRESS3 DEVICES FAIL DURING STARTUP WITH RESETTING EVENTS
USERS AFFECTED:
All users running OSA-Express3 devices with microcode level
7.31.0 and beyond
who have a z/VM TCP/IP stack configuration that includes a VIPA interface.
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April 17, 2009
VM64644 WAIT9050 CPOWNED PACKS IN TPF MODE
For any VM user with a CPOWNED pack in TPF mode
z/VM V5.R4 users with CPOWNED packs on TPF mode logical subsystems
go into a WAIT9050 at IPL after applying VM64449 which is on
Stacked Product RSU 5403RSU, CP Level 0901.
VM64644 was taken to address this problem, the APAR is expected
to be closed by mid May.
Configuring the CPOWNED packs to non-TPF mode logical subsystems
circumvents this issue.
For more information on the following,
view the
2008 z/VM Red Alerts
(01 May 2008)
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May 2008
VM64273 - Problems for VM guests using non-fullpack minidisks in
specific situations.
Customers who are using PAV involving non-fullpack minidisks
on z/VM 5.2.0 and z/VM 5.3.0 with and without zLinux are possibly
exposed to this problem.
For more information on the following,
view the
2007 z/VM Red Alerts
(14 Nov. 2007)
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November 15, 2007
VM64306 - PROBLEMS RUNNING LINUX ON FCP SCSI DASD
THAT ARE ATTACHED WITH QIOASSIST
Customers using Linux distributions SLES10 and RHEL5 under z/VM versions 5.2 or
5.3
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October 2007
VM64297 - PAGING SPIKE DEMAND SCAN SHUTS DOWN
SYSTEM HANG
This affects all z/VM R530
customers.
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September 2007
VM64249 - PEVM63853 LPAR CHECK STOP DURING EDM H/W
UPGRADE
VM64323 - PEVM63853 NO LPAR MONITOR RECORDS AFTER
EDM UPGRADE
During EDM (Enhanced Driver Maintenance) on IBM System z9, any LPAR
running z/VM V520 or V530 (IFL engines only).
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NOTE:
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| 2008 May: | Added 2008 Red Alert section/report.
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| 2007 Dec. 5 & 6: | Minor wording changes made on the page, but there
were no changes to the Red Alert report/pdf which
remains at Nov. 14, 2007.
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