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Advanced O&M Command Reference

OceanStor 18000 and 18000F V5 Series V500R007

This document is applicable to OceanStor 18500 V5, 18800 V5, 18500F V5, and 18800F V5. Based on the CLI, this document describes how to use various commands classified by functionsand how to set the CLI and manage the storage system through these commands.

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show sdd io_stat

show sdd io_stat


The show sdd io_stat command is used to display the I/O statistics about the SDD module.


show sdd io_stat remote_device_id=? remote_replication_type=?





remote_device_id=? Remote device ID.

To obtain the value, run the "show remote_device general" command.

remote_replication_type=? Remote replication type.

The value can be "lun" or "file_system", where:

  • "lun": remote replication of LUNs.
  • "file_system": remote replication of file systems.


Developer view

Usage Guidelines



Display the I/O statistics about the SDD module.

developer:/>show sdd io_stat remote_device_id=0 remote_replication_type=file_system
Total IO Count: 1456
Compress OK: 1423
Compress Fail: 33
Pass Smart Compression : 1420
Fail Smart Compression : 30
Cannot Compress IO: 0
Small IO: 2
No Data IO: 1

System Response

The following table describes the parameter meanings.



Total IO Count

Total number of I/Os received by the SDD module.

Compress OK

Number of I/Os that are successfully compressed.

Compress Fail

Number of I/Os that fail to be compressed.

Pass Smart Compression

Number of I/Os that pass the smart compression.

Fail Smart Compression

Number of I/Os that do not pass the smart compression.

Cannot Compress IO

Number of I/Os that cannot be compressed.

Small IO

Number of small I/Os (smaller than or equal to 4 KB).

No Data IO

Number of I/Os that carry no data.

Updated: 2020-01-17

Document ID: EDOC1000181602

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