mca_recovery_on(5)mca_recovery_on(5)NAMEmca_recovery_on - enable/disable MCA Error Recovery
VALUES
Failsafe
Default
Allowed values
Minimum:
Maximum:
DESCRIPTION
HP-UX supports MCA Error Recovery to ensure that certain Machine Check
Aborts (MCA) caused by transient errors do not crash the operating sys‐
tem.
The dynamic tunable is used to enable or disable the MCA Error Recovery
functionality. If disabled, an MCA will cause the system to initiate a
crash dump and then a system reset (normal legacy behavior). If
enabled, certain MCAs caused by transient events will be recovered and
system execution resumed. The recovery action depends on the type of
MCA and can include termination of a user process.
Who Is Expected to Change This Tunable?
System administrators can change the value of depending on the usage of
the system.
Restrictions on Changing
MCA Error Recovery is only supported on Dual-Core Processors 9100
Series and later. On unsupported systems, MCA Error Recovery will be
disabled by default and changing the tunable will not be allowed.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parame‐
ter may be removed or have its meaning changed in future releases of
HP-UX.
Installation of optional kernel software, from HP or other vendors, may
cause changes to tunable parameter values. After installation, some
tunable parameters may no longer be at the default or recommended val‐
ues. For information about the effects of installation on tunable val‐
ues, consult the documentation for the kernel software being installed.
For information about optional kernel software that was factory
installed on your system, see at
AUTHOR
was developed by HP.
Tunable Kernel Parameters - Integrity Systems mca_recovery_on(5)