The zfcp device driver provides statistics through sysfs. This information is given for each FCP device.
The zfcp device driver queries the FCP channel directly for the requested information and in addition latency information is collected and summarized during the normal operation of the FCP channel. The statistics cannot be reset or activated or deactivated manually, however, a deactivate/activate cycle of the FCP device would cause this effect. See Table 1 for available statistic information.
| Type | Description |
|---|---|
| seconds_active | Seconds since the FCP device is active |
| requests | Number of requests that are processed since FCP device activation |
| megabytes | Number of megabytes transferred since FCP device activation |
| utilization | Utilization in percent over the last 2 seconds |
| cmd_latency | Latency for command requests processed |
| read_latency | Latency for read requests processed |
| write_latency | Latency for write requests processed |