| Laurence Oberman | 54a5e73 | 2016-05-10 01:23:17 -0700 | [diff] [blame] | 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 |
| 8 | |
| 9 | Use this attribute to control the discarding of SCSI commands to a |
| 10 | selected host. |
| 11 | This may be useful for testing error handling and simulating slow drain |
| 12 | and other fabric issues. |
| 13 | |
| 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. |
| 17 | |
| 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 |
| 20 | |
| 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 |