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The mlxdump utility dumps device internal configuration data and other internal data (such as counters, state machines).

The data can be used for hardware troubleshooting. It can be applied to all NVIDIA® devices.

The tool has 3 run modes: [fast | normal | full] while the default is "fast", the "full" mode dumps all available data but might run slower than normal and fast modes.

The tool also can dump only flow steering information using the fsdump sub-command (See example below). The fsdump sub-command has the flag --type to specify the type of the flow steering: STE or FT or All.

The tool can dump only mstdump information using the mstdump sub-command (see example below). The mstdump sub-command has multiple flags: --full, i2c_slave, cause_addr and cause_offset which enable the user to run with the needed parameters.

mlxdump Usage

The mst driver must be started prior to running mlxdump tool.

mlxdump OPTION <command> [COMMAND OPTIONS] [-d|--device MstDevice] [-h|--help] [-v|--version]


-d|--device MstDevicemst device name
-h|--help    Show help message and exit
-v|--version   Show version and exit
mstdump   Read mstdump information

Read Flow Steering information.

Note: Reading flow steering information is supported in ConnectX-4 and above adapter cards.

snapshotDump everything

To view <command> related options please run: "mlxdump OPTION <command> -h"


To generate "mlxdump.udmp" while running in fast mode:

# mlxdump -d /dev/mst/mt4117_pciconf0 snapshot

To generate "mlxdump.udmp" while running in full mode:  

# mlxdump -d /dev/mst/mt4117_pciconf0 snapshot -m full 

To generate "mlxdump_13_1_2013.udmp" while running in normal mode:

# mlxdump -d /dev/mst/mt4117_pciconf0 snapshot -m normal -o mlxdump_13_1_2013.udmp

To generate flow steering information:

# mlxdump -d /dev/mst/mt4117_pciconf0 fsdump --type=All --gvmi=0 

To generate mstdump information::

# mlxdump -d /dev/mst/mt4119_pciconf0 mstdump