Dell 8 Troubleshooting Manual

Download Troubleshooting manual of Dell PowerEdge M1000e Chassis, Computer Hardware for Free or View it Online on All-Guides.com. This version of Dell PowerEdge M1000e Manual compatible with such list of devices, as: PowerEdge M1000e, 8, PowerEdge M605, PowerEdge M610, PowerEdge M710HD

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Fabric OS Troubleshooting and Diagnostics Guide 13
53-1001769-01
Switch boot issues
2
Symptom I2C bus errors are appearing in the switch log.
Probable cause and recommended action
I
2
C bus errors generally indicate defective hardware or poorly seated devices or blades; the specific
item is listed in the error message. See the Fabric OS Message Reference for information specific
to the error that was received. Some Chip-Port (CPT) and Environmental Monitor (EM) messages
contain I
2
C-related information.
If the I
2
C message does not indicate the specific hardware that may be failing, begin debugging the
hardware, as this is the most likely cause. The next sections provide procedures for debugging the
hardware.
Symptom Core file or FFDC warning messages appear on the serial console or in the system log.
Probable cause and recommended action
Issue the supportSave command. The messages can be dismissed by issuing the supportSave -R
command after all data is confirmed to be collected properly.
Error example:
*** CORE FILES WARNING (10/22/08 - 05:00:01 ) ***
3416 KBytes in 1 file(s)
use "supportsave" command to upload
Switch boot issues
Symptom The enterprise-class platform model rebooted again after an initial bootup.
Probable cause and recommended action
This issue can occur during an enterprise-class platform boot up with two CPs. If any failure occurs
on active CP, before the standby CP is fully functional and has obtained HA sync, the Standby CP
may not be able to take on the active role to perform failover successfully.
In this case, both CPs will reboot to recover from the failure.
Rolling Reboot Detection
A rolling reboot occurs when a switch or enterprise-class platform has continuously experienced
unexpected reboots. This behavior is continuous until the rolling reboot is detected by the system.
Once the Rolling Reboot Detection (RRD) occurs, the switch is put into a stable state so that a
minimal supportSave can be collected and sent to your service support provider for analysis. Not
every reboot activates the Rolling Reboot Detection feature.
ATTENTION
If a rolling reboot is caused by a panic inside Linux kernel, then the RRD feature will not be activated.
Reboot classification
There are two types of reboots that occur on a switch and enterprise-class platform, expected and
unexpected. Expected reboots occur when the reboots are initialized by commands, these types of
reboots are ignored by the RRD feature. They include the following: