down
command uses the following form, where
physIDlist
is a comma-separated list of racks or dANCs
present on the system:
crayadm@smw:~>
xtcli power down physIDlist
WARNING: Although a dANC is powered off, the Hardware Supervisory System (HSS) in the rack is alive
and has power.
For information about powering down a component, see the
xtcli_power(8)
man page.
Power down a specified dANC
For this example, power down a dANC with the ID
r0s0c0
:
crayadm@smw:~>
xtcli power down r0s0c0
3.4.13 Unlock Hardware Components
It may be required to unlock components when a daemon unexpectedly dies while holding a lock.
Use the HSS
xtcli lock
command to unlock components. This command is useful when a daemon
unexpectedly dies while holding a lock.
The system administrator can manually check for locks with the
xtcli lock show
command and then unlock
them. Unlocking a component does not print out the state manager session ID. The
-u
option must be used to
unlock a component as follows:
crayadm@smw>
xtcli lock -u lock_number
Where
lock_number
is the value given when initiating the lock; it is also indicated in the
xtcli lock show
query. Unlocking does nothing to the state of the component other than to release locks associated with it.
Unlock rack
r0
crayadm@smw>
xtcli -u r0
3.4.14 Capture and Analyze System-level and Node-level Dumps
The
xtdumpsys
command collects and analyzes information from a Cray system that is failing or has failed, has
crashed, or is hung. Analysis is performed on, for example, event log data, active heartbeat probing, voltages,
temperatures, health faults, in-memory console buffers, and high-speed interconnection network errors. When
failed components are found, detailed information is gathered from them.
To collect similar information for components that have not failed, invoke the
xtdumpsys
command with the
--
add
option and name the components from which to collect data. The HSS
xtdumpsys
command saves dump
information in
/var/opt/cray/dump/
timestamp
by default.
NOTE: When using the
--add
option to add multiple components, separate components with spaces, not
commas.
System Management
S3016
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