HP-UX Virtual Partitions Release Notes (A.04.04)

Known Problems and Workarounds

This section provides a list of problems and limitations known to HP at the time of publication.

If workarounds are available, they are included. For information on specific defects, see the HP

ITRC at http://itrc.hp.com.

• Virtual Partition Panic

Related JAG and Patch ID Number JAGaf96876, Patch ID Number PHKL_35114

Applicable On HP-UX Virtual Partitions A.04.xx on HP 9000 systems

Description On a machine running vPars, a global TLB purge effects all of the TLBs in all

of the vPars belonging to the same hard partition (nPar), which sometimes causes the

following HPMCs:

• Unexpected trap while PSW-Q = 0

• datapage fault

• no hit in cell map

Workaround Install patch PHKL_35114 or later

• Console Hangs after Processor Dependent Hardware (PDH) Console is

Assigned to a vPar

Related JAG and Patch ID Number JAGag33755, Patch ID Number PHNE_36225

Applicable On vPars A.04.xx on HP9000 sx2000 platforms

Description After PDH console device is assigned to a vPar, output does not appear on

console and it appears to be hung. CTRL-A does not generate console output.

Symptoms After the console hardware is assigned to a vPar using the following command:

#ioscan -kfnCtty

Class I H/WPath Driver S/W StateH/W Type Description

=============================================================

tty 0 0/8/1 asio0CLAIMED INTERFACEBuilt-in RS232C

/dev/diag/mux0 /dev/mux0 /dev/tty0p0

#vparmodify -p vPar1 -aio:0/8/1

– when the vPar is booted, messages do not appear on the console and CTRL-A does not

work.

Workaround Install PHNE_36225 or later patch

• cimserver Process Causes Scheduling Delays

Related JAG and Patch ID Number JAGag09158, Patch ID Number PHKL_36288

Applicable On vPars A.04.xx on Integrity

Description The cimserver process can cause scheduling delays of over 500 ms.

Symptoms On a single CPU system or partition, the diag2 driver occupies the sole CPU

for around 5 seconds causing the system to hang for that duration.

Workaround Install PHKL_36288 or later

• Virtual Partition Appears to Hang After Typing control-s

Related JAG or Patch ID Number JAGae98555

Applicable On

• vPars A.04.xx on PA

• vPars A.03.xx on PA