02-28-2017
The boot file system is EAFS, the root and any other (/u) file systems default to HTFS.
You cannot re-size an HTFS partition without losing the data that is on it. So you will not be able to add the /u file system without doing a full backup and standalone restore.
From an operational point of view, it will make no difference if /u is a file system, or simply another directory in the root file system.
If you must, do a full backup, boot from the Edge recovery media, re-size the partitions, and do full restore.
---------- Post updated at 08:02 PM ---------- Previous update was at 07:20 PM ----------
I now what happened. When you restored the old data, you restored /etc/default/filesys, which has the file system configuration. Unfortunately the one that has been restored contains info on /u but that file system no longer exists.
Just use a text editor and remove the references to /u.
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LEARN ABOUT HPUX
mca_recovery_on
mca_recovery_on(5) File Formats Manual mca_recovery_on(5)
NAME
mca_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
system.
The dynamic tunable is used to enable or disable the MCA Error Recovery functionality. If disabled, an MCA will cause the system to initi-
ate 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 parameter 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 values. For information about the effects of installation on tun-
able values, 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 Only mca_recovery_on(5)