7. Maintenance mode and BIST

This section describes how to conduct maintenance operations using the BMC and host command lines.

7.1. BMC command line

You can use the ipum-diags command for maintenance operations. Table 7.1 describes the available commands.

Table 7.1 Maintenance options
Parameter	Description
`check_i2cs`	Check status of i2c buses
`check_fans`	Check status of fans
`check_temps`	Check status of inlet and exhaust temperature
`check_voltages`	Check status of voltage sensors
`check_bmc_all`	Run all BMC related tests, ignoring cables
`set_fans_speed`	Set fan speed - range 100 to 255
`check_mcu_all`	A suite of IPU-Link and USB connectivity tests
`bist`	Run a complete built-in self test
`bist-lpbk`	Run a complete built-in self test with loop-back cables plugged in

You can also do maintenance operations by using the Graphcore openbmctool.py utility. Table 7.2 describes the commands available.

Table 7.2 Maintenance mode operations using openbmctool
Command	Description
`status`	Check if BMC is in maintenance mode
$ python3 openbmctool.py -H <bmcip> -U <bmcuser> -P <bmcpass> maintenance mode status
`start`	Start maintenance mode
$ python3 openbmctool.py -H <bmcip> -U <bmcuser> -P <bmcpass> maintenance mode start
`stop`	Stop maintenance mode
$ python3 openbmctool.py -H <bmcip> -U <bmcuser> -P <bmcpass> maintenance mode stop
`bist`	Start BIST
$ python3 openbmctool.py -H <bmcip> -U <bmcuser> -P <bmcpass> maintenance bist
`bist-lpbk`	Start BIST in loop-back mode
$ python3 openbmctool.py -H <bmcip> -U <bmcuser> -P <bmcpass> maintenance bist-lpbk

Note

The BMC must be in maintenance mode for the bist and bist-lpbk commands to be executed.

No maintenance operations are available via REST.

No maintenance operations are available via IPMI.

No Redfish commands are available for maintenance operations.