User manual

Chapter 7 – Troubleshooting
ePower Power Distribution Unit User Manual, Revision 1.1 65
The message Erase at XXXX failed
immediately, followed by JFFS2:
marking eraseblock at XXXX as bad.
appeared in the system log.
This message indicates that JFFS2 has detected
a bad NAND block and corrected the problem.
NAND flash commonly wears down over time.
The ePower implements “wear leveling,” which
significantly reduces the chances of this occurring.
However, if it does occur, the ePower automatically
marks the block as bad (as indicated by the
aforementioned error message), and re-maps
that bad address to a good address.
This not a major problem, and can safely be ignored
if you only see a handful of error messages similar
to this in the logs. However, if you begin to notice
a large number of error messages (greater than 50),
contact Cyber Switching’s Technical Support
at [e-mail].
How do I fix an upgrade failure
when the error message is
ipkg_download: ERROR: Command
failed with return value 1: 'wget ... '
?
This failure is typically caused by a network
connectivity issue. First, check the ePower’s network
settings and verify that the IP address, subnet mask,
gateway, and DNS servers are properly listed. Second,
check the ePower’s proxy settings, and verify that
they are correct for your network. Finally, on a
computer in the same subnet as the ePower unit,
attempt to visit the URL mentioned in the
error message.
For further help, please contact Cyber Switching’s
Technical Support at [e-mail].
Issue Suggested Solution