ipmi chassis power on does not work

Stefan spommere at gmail.com
Thu Feb 5 15:51:49 CST 2009


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Hi,

we have a series of PowerEdge 2850, BIOS version A04, BMC version
1.07. They run the same Linux kernel version, and IPMI is configured
to work on these machines.

Most machines exhibit the problem that a 'power on' and 'power status'
after a 'power off' is not possible.

# /usr/bin/ipmitool -H staiw04-vip -U user -P pwd chassis power off
Chassis Power Control: Down/Off
...
...
# /usr/bin/ipmitool -H staiw04-vip -U user -P pwd chassis power status
Error: Unable to establish LAN session
ipmi_lan_send_cmd failed to open intf
Unable to get Chassis Power Status

Only a few machines don't show this problem, and between a 'power off'
and 'power on', all 'power status' commands succeed.

It appears that the 'power off' also cuts power to the BMC;
interestingly, access to the DRAC of the problematic node is fine.

We'd appreciate any information on what could be causing this problem,
how to resolve it, or at least what other diagnostics are required to
identify the problem.

Thanks
Stefan

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