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ONTAP performance counter mapping

lun

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This table contains LUN-level SAN counters which are shared between 7-mode and C-mode. These counters are available for every mapped logical unit. The alias name for lun:node is lun_node.

Classic Object: lun

Table Row IDs

ID Format Aggregation Type Comment

{svm.name}:{instance_name}:{instance_uuid}

(not applicable)

This represents the construction of the row ID field, which is a single unique string that identifies a row.

{node.name}:{svm.name}:{instance_name}:{instance_uuid}

constituent

This represents the construction of a row ID field for a row from a single node.

{node.name}:{node.uuid}

node

This represents the construction of the row ID field in node combo object, which is a single unique string that identifies a row.

Properties

This section describes the mapping between classic (ONTAPI) string counter names and REST property names.

Classic String Counter REST Property Description

node_name

node.name

Name of the node

vserver_name

svm.name

Name of the vserver owning this logical unit

vserver_uuid

svm.uuid

UUID of the SVM owning this logical unit

instance_uuid

uuid

UUID of the logical unit

Counters

This section describes the mapping between classic (ONTAPI) numeric counter names and REST counter names.

Classic Numeric Counter REST Counter Description

avg_read_latency

average_read_latency

Average read latency in microseconds for all operations on the LUN

avg_write_latency

average_write_latency

Average write latency in microseconds for all operations on the LUN

avg_xcopy_latency

average_xcopy_latency

Average latency in microseconds for xcopy requests

caw_reqs

caw_requests

Number of compare and write requests

enospc

enospc

Number of operations receiving ENOSPC errors

queue_full

queue_full

Queue full responses

read_align_histo

read_align_histogram

Histogram of WAFL read alignment (number sectors off WAFL block start)

read_data

read_data

Read bytes

read_ops

read_ops

Number of read operations

read_ops_sent

read_ops_sent

Number of outgoing read operations

read_partial_blocks

read_partial_blocks

Percentage of reads whose size is not a multiple of WAFL block size

remote_bytes

remote_bytes

I/O to or from a LUN which is not owned by the storage system handling the I/O.

remote_ops

remote_ops

Number of operations received by a storage system that does not own the LUN
targeted by the operations.

unmap_reqs

unmap_requests

Number of unmap command requests

write_align_histo

write_align_histogram

Histogram of WAFL write alignment (number of sectors off WAFL block start)

write_data

write_data

Write bytes

write_ops

write_ops

Number of write operations

write_ops_sent

write_ops_sent

Number of outgoing write operations

write_partial_blocks

write_partial_blocks

Percentage of writes whose size is not a multiple of WAFL block size

writesame_reqs

writesame_requests

Number of write same command requests

writesame_unmap_reqs

writesame_unmap_requests

Number of write same commands requests with unmap bit set

xcopy_reqs

xcopy_requests

Total number of xcopy operations on the LUN

Property/Counter Content Changes

This section describes any output value differences between the classic (ONTAPI) string counter and the respective REST property. It also describes array label name changes between classic array counters and respective REST array counters.

Table Aliases

This section describes aliases for aggregated tables.

Classic Object Alias

lun:node

lun_node