Amazon FSx for Lustre
Lustre User Guide

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Monitoring Amazon FSx for Lustre

With Amazon FSx for Lustre, you can monitor activity for your file systems using Amazon CloudWatch metrics.

Monitoring with Amazon CloudWatch

You can monitor file systems using Amazon CloudWatch, which collects and processes raw data from Amazon FSx for Lustre into readable, near real-time metrics. These statistics are retained for a period of 15 months, so that you can access historical information and gain a better perspective on how your web application or service is performing. By default, Amazon FSx for Lustre metric data is automatically sent to CloudWatch at 1-minute periods. For more information about CloudWatch, see What Are Amazon CloudWatch, Amazon CloudWatch Events, and Amazon CloudWatch Logs? in the Amazon CloudWatch User Guide.

As with Amazon EFS, Amazon S3, and Amazon EBS, Amazon FSx for Lustre CloudWatch metrics are reported as raw Bytes. Bytes are not rounded to either a decimal or binary multiple of the unit.

Amazon FSx for Lustre publishes the following metrics into the AWS/FSx namespace in CloudWatch. For each metric, Amazon FSx for Lustre emits a data point per disk per minute. To view aggregate file system details, you can use the Sum statistic. Note that the file servers behind your Amazon FSx for Lustre file systems are spread across multiple disks.

Metric Description
DataReadBytes

The number of bytes for file system read operations.

The Sum statistic is the total number of bytes associated with read operations during the period. The Minimum statistic is the minimum number of bytes associated with read operations on a single disk. The Maximum statistic is the maximum number of bytes associated with read operations on the disk. The Average statistic is the average number of bytes associated with read operations per disk. The SampleCount statistic is the number of disks.

To calculate the average throughput (bytes per second) for a period, divide the Sum statistic by the number of seconds in the period.

Units:

  • Bytes for Sum, Minimum, Maximum, and Average.

  • Count for SampleCount.

Valid statistics: Sum, Minimum, Maximum, Average, SampleCount

DataWriteBytes

The number of bytes for file system write operations.

The Sum statistic is the total number of bytes associated with write operations. The Minimum statistic is the minimum number of bytes associated with write operations on a single disk. The Maximum statistic is the maximum number of bytes associated with write operations on the disk. The Average statistic is the average number of bytes associated with write operations per disk. The SampleCount statistic is the number of disks.

To calculate the average throughput (bytes per second) for a period, divide the Sum statistic by the number of seconds in the period.

Units:

  • Bytes for Sum, Minimum, Maximum, and Average.

  • Count for SampleCount.

Valid statistics: Sum, Minimum, Maximum, Average, SampleCount

DataReadOperations

The number of read operations.

The Sum statistic is the total number of read operations. The Minimum statistic is the minimum number of read operations on a single disk. The Maximum statistic is the maximum number of read operations on the disk. The Average statistic is the average number of read operations per disk. The SampleCount statistic is the number of disks.

To calculate the average number of read operations (operations per second) for a period, divide the Sum statistic by the number of seconds in the period.

Units:

  • Bytes for Sum, Minimum, Maximum, and Average.

  • Count for SampleCount.

Valid statistics: Sum, Minimum, Maximum, Average, SampleCount

DataWriteOperations

The number of write operations.

The Sum statistic is the total number of write operations. The Minimum statistic is the minimum number of write operations on a single disk. The Maximum statistic is the maximum number write operations on the disk. The Average statistic is the average number of write operations per disk. The SampleCount statistic is the number of disks.

To calculate the average number of write operations (operations per second) for a period, divide the Sum statistic by the number of seconds in the period.

Units:

  • Bytes for Sum, Minimum, Maximum, and Average.

  • Count for SampleCount.

Valid statistics: Sum, Minimum, Maximum, Average, SampleCount

MetadataOperations

The number of metadata operations.

The Sum statistic is the count of metadata operations. The Minimum statistic is the minimum number of metadata operations per disk. The Maximum statistic is the maximum number of metadata operations per disk. The Average statistic is the average number of metadata operations per disk. The SampleCount statistic is the number of disks.

To calculate the average number of metadata operations (operations per second) for a period, divide the Sum statistic by the number of seconds in the period.

Units:

  • Count for Sum, Minimum, Maximum, Average, and SampleCount.

Valid statistics: Sum, Minimum, Maximum, Average, SampleCount

FreeDataStorageCapacity

The amount of available storage capacity.

The Sum statistic is the total number of bytes available in the file system. The Minimum statistic is the total number bytes available in the fullest disk. The Maximum statistic is the total number of bytes available in the disk with the most remaining available storage. The Average statistic is the average number of bytes available per disk. The SampleCount statistic is the number of disks.

Units:

  • Bytes for Sum, Minimum, Maximum.

  • Count for SampleCount.

Valid statistics: Sum, Minimum, Maximum, Average, SampleCount

Amazon FSx for Lustre Dimensions

Amazon FSx for Lustre metrics use the FSx namespace and provide metrics for a single dimension, FileSystemId. A file system's ID can be found using the aws fsx describe-file-systems AWS CLI command, and it takes the form of fs-01234567890123456.