Kernel Memory Dump File Management
Using ftServer Fault-Tolerant Utilities and Software
7-13
For example, the first command below brings down the bottom I/O element; the second
command brings it back up:
# /opt/ft/bin/ftsmaint bringDown 11
# /opt/ft/bin/ftsmaint bringUp 11
N O T E
Before removing an essential component, like an I/O
element, from service, first verify that its partner is
running.
When you issue the
bringUp
command, the system should automatically
synchronize, the RAID array drives should update and become mirrored, and the
system should resume duplex operation.
Removing a PCI Adapter From Service and Bringing It Into Service
You can also use the
ftsmaint
command to remove a PCI adapter from service.
For example, use the following command to remove the PCI adapter in slot 9 of I/O
element 10 from service:
#
/opt/ft/bin/ftsmaint bringDown 10/9
You can bring that PCI adapter back into service by typing the following command:
#
/opt/ft/bin/ftsmaint bringUp 10/9
Kernel Memory Dump File Management
C A U T I O N
C A U T I O N
!
To ensure that the ftServer dumping mechanism works
successfully, do not enable Diskdump or Netdump.
Diskdump or Netdump can interfere with the completion of
an ftServer dump.
By default, the supported Linux operating system is installed with kernel memory dump
enabled. If the system CPU-I/O enclosures are duplexed at the time of a crash, the
system creates a memory dump and stores the dump in the memory of one CPU-I/O
enclosure. The system restarts with the remaining CPU-I/O enclosure. After the system
restarts, the dump is automatically written in a compressed format to a disk file in
var/crash
/
YYYY-MM-DD-HH:mm/
vmcore.
You must send the dump file to theNEC
Corporation of America Customer Support Center or your authorized NEC service
representative for analysis.
