Problems With Os Operation - NEC Express5800 Series Maintenance Manual

Chapter 1 Maintenance
8.5

Problems With OS Operation

[?] OS operation is unstable:
Did you access to directory or file under /dev, /proc or /sys?

 The server frequently saves and updates information related to system operation and
management in the following directories. Because accessing any of these directories by a
command or other means may impact fault tolerant features and make behavior of the system
unstable, do not access them.
/dev/mem
/proc/kcore
/proc/bus
/sys
[?] The server is not found on the network:
Is the cable connected properly?

 Securely connect the proper cable to the network port on the rear of the server. Additionally, make
sure that the cable conforms to the network interface standards.
Are BIOS settings correct?

 You can disable the internal network controller using the BIOS setup utility. Check the settings
with BIOS setup utility.
Is the transfer speed correct?

 You can change the transfer speed or configure the setting for onboard LAN controller from OS.
Be sure to specify the same transfer speed and duplex mode as those on connected hub. If you
specify Auto-Negotiation, make sure that Auto-Negotiation is also specified for the connected
hub.
Is the transfer speed of 10G LAN port '100Mbps'?

 If you specify 100Mbps, make sure that Auto-Negotiation is specified for the connected hub. Other
than Auto-Negotiation is not supported by 10G LAN port.
[?] Power-saving feature does not work:
 The server does not support power-saving feature specified in Power Option.
[?] A CPU/IO module cannot be integrated:
 When a component fails and is reintegrated, the following message may be recorded to the
system event log and the process is stopped.
Such event indicates that the component's MTBF is below the threshold and it is judged that repair
is necessary. Thus the reintegration process cannot be completed. Generally replacement of the
component will be required, so contact your sales representative. If reintegrating the component
without repair is required for some reason, consult your sales agent. It is possible to perform
reintegration forcefully.
ERROR - x is now STATE_BROKEN / REASON_BELOW_MTBF
[?] The following error message appears:
 The following messages about internal HDD appears on syslog file. However, it does not affect the
system operation.
"multipathd: sds: spurious uevent, path not found"
"multipathd: uevent trigger error"
(x denotes device ID.)
Express5800/R320e-E4, R320e-M4 Maintenance Guide (Linux)
8. Troubleshooting
69