Viewing EVS Monitoring Data

Description

This section describes monitored metrics reported by EVS to Cloud Eye as well as their namespaces and dimensions. You can use the console or APIs provided by Cloud Eye to query the metrics of the monitored objects and alarms generated for EVS. For details about how to set alarms, see Setting Alarm Rules.

Namespace

SYS.EVS

Metrics

**Table 1** EVS metrics
Metric ID	Metric Name	Description	Value Range	Monitored Object	Monitoring Period
disk_device_read_bytes_rate	Disk Read Bandwidth	Number of bytes read from the monitored disk per second Unit: Bytes/s	≥ 0 bytes/s	EVS disk	5 minutes in average
disk_device_write_bytes_rate	Disk Write Bandwidth	Number of bytes written to the monitored disk per second Unit: Bytes/s	≥ 0 bytes/s	EVS disk	5 minutes in average
disk_device_read_requests_rate	Disk Read IOPS	Number of read requests sent to the monitored disk per second Unit: Requests/s	≥ 0 Requests/s	EVS disk	5 minutes in average
disk_device_write_requests_rate	Disk Write IOPS	Number of write requests sent to the monitored disk per second Unit: Requests/s	≥ 0 Requests/s	EVS disk	5 minutes in average
disk_device_queue_length	Average Queue Length	Average number of read or write requests waiting for processing in the monitoring period for the monitored disk Unit: Count	≥ 0 Counts	EVS disk	5 minutes in average
disk_device_io_util	Disk I/O Utilization	Percentage of time spent during which read and write requests were sent to the monitored disk in the monitoring period Unit: Percent	0-100%	EVS disk	5 minutes in average
disk_device_write_bytes_per_operation	Avg Disk Bytes Per Write	Average number of bytes transmitted per I/O write for the monitored disk in the monitoring period Unit: Kbyte/operation	≥ 0 KiB/op	EVS disk	5 minutes in average
disk_device_read_bytes_per_operation	Avg Disk Bytes Per Read	Average number of bytes transmitted per I/O read for the monitored disk in the monitoring period Unit: Kbyte/operation	≥ 0 KiB/op	EVS disk	5 minutes in average
disk_device_write_await	Disk Write Await	Average await time per I/O write for the monitored disk in the monitoring period Unit: ms/operation	≥ 0 ms/operation	EVS disk	5 minutes in average
disk_device_read_await	Disk Read Await	Average await time per I/O read for the monitored disk in the monitoring period Unit: ms/operation	≥ 0 ms/operation	EVS disk	5 minutes in average
disk_device_io_svctm	Disk I/O Service Time	Average service time per I/O read or write for the monitored disk in the monitoring period Unit: ms/operation	≥ 0 ms/operation	EVS disk	5 minutes in average
disk_device_io_iops_qos_num	IOPS Upper Limit Reached (Count)	Number of times that the IOPS of the monitored disk has reached the upper limit Unit: Count	≥ 0 Counts	EVS disk	5 minutes in average
disk_device_io_iobw_qos_num	Bandwidth Upper Limit Reached (Count)	Number of times that the bandwidth of the monitored disk has reached the upper limit Unit: Count	≥ 0 Counts	EVS disk	5 minutes in average

Dimension

Key	Value
disk_name	Server ID-drive letter, for example, 6f3c6f91-4b24-4e1b-b7d1-a94ac1cb011d-vda (vda is the drive letter)

Viewing Monitoring Data

Log in to the management console.
Under Storage, click Elastic Volume Service.
The disk list page is displayed.
In the EVS disk list, click the name of the disk you want to view the monitoring data.
The disk details page is displayed.
On the Servers tab, locate the row that contains the server and click View Metric in the Operation column.
The Monitoring Metrics page is displayed.
View the disk monitoring data by metric or monitored duration.