tcm_qla2xxx jam_host attribute¶

There is now a new module endpoint atribute called jam_hostattribute:

jam_host: boolean=0/1

This attribute and accompanying code is only included if theKconfig parameter TCM_QLA2XXX_DEBUG is set to Y

By default this jammer code and functionality is disabled

Use this attribute to control the discarding of SCSI commands to aselected host.

This may be useful for testing error handling and simulating slow drainand other fabric issues.

Setting a boolean of 1 for the jam_host attribute for a particular hostwill discard the commands for that host.

Reset back to 0 to stop the jamming.

Enable host 4 to be jammed:

echo 1 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:27:8f:ae/tpgt_1/attrib/jam_host

Disable jamming on host 4:

echo 0 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:27:8f:ae/tpgt_1/attrib/jam_host