1 tcm_qla2xxx jam_host attribute
2 ------------------------------
3 There is now a new module endpoint atribute called jam_host
4 attribute: jam_host: boolean=0/1
5 This attribute and accompanying code is only included if the
6 Kconfig parameter TCM_QLA2XXX_DEBUG is set to Y
7 By default this jammer code and functionality is disabled
9 Use this attribute to control the discarding of SCSI commands to a
11 This may be useful for testing error handling and simulating slow drain
12 and other fabric issues.
14 Setting a boolean of 1 for the jam_host attribute for a particular host
15 will discard the commands for that host.
16 Reset back to 0 to stop the jamming.
18 Enable host 4 to be jammed
19 echo 1 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:27:8f:ae/tpgt_1/attrib/jam_host
21 Disable jamming on host 4
22 echo 0 > /sys/kernel/config/target/qla2xxx/21:00:00:24:ff:27:8f:ae/tpgt_1/attrib/jam_host