HP vPars and Integrity Virtual Machines V6.1 Release Notes

Table 2 Known behaviors in vPars V6.1 (continued)
Description/ActionProblem
Frequent interrupt migration on the vPar can lead to storage
LUNs going offline. This can occur indirectly when dynamic
CPU migration occurs on a frequent basis when the
interrupt balancing daemon is enabled.
What to do
The interrupt balancing daemon is disabled by default. Do
not enable the interrupt balancing daemon.
Interrupt balancing daemon is disabled in vPars V6.1
If the VSP base page size is changed to 4K from the default
64K, the VSP might run into low memory situation. Run
hpvmstatus -s to check the current VSP free memory.
For example:
# hpvmstatus -s
…
Available VSP memory = 2139 Mbytes
What to do
Increase the memory allocated for VSP by tuning the
HPVM_MEMORY_OVERHEAD_PERCENT
variable in /etc/rc.config.d/hpvmconf and then
reboot the VSP. For example, run the following commands
to reserve around 15% of system free memory as VSP
memory:
# ch_rc -a -p
HPVM_MEMORY_OVERHEAD_PERCENT=15.0
/etc/rc.config.d/hpvmconf
# shutdown -r now
Not enough memory allocated for VSP when the VSP base
page size is set to 4K.
26 Issues in this release