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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 pal fai

show pal fai


The show pal fai command is used to query file system access interface (FAI) information of a file system.


show pal fai file_system_id=? [ controller=? ]





file_system_id=? ID of the file system to be queried.

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

controller=? Controller ID.

The value is in the format of "XA" or "XB" or "XC" or "XD", where the "X" is an integer ranging from 0 to 3, for example: "0A", "1C".


Developer view

Usage Guidelines



Query FAI information of file system "1".

developer:/>show pal fai file_system_id=1
FAI Addr : 0xffff880a9bb8f268
Magic : 20110420
FAI Fs ID : 1
Version : 2
Reference Count : 1
Is Init : 1
Is Used : 1
Root Object ID : 3
Volume ID : 274877906945
IO Switch : Start
IO Count : 0
Total IO Count : 0
User Pool Free Capacity : 0
Fs Status : Normal
Fs Repair Status : Null
RW Status : Read Write
Background Serivce Status : On
Hang Count : 0
Block Count : 0
Config Fs ID : 1
Fs Name : fs1
Is Read Only : 0
Is Cache Migrating : 0
Space ID : 1
Disk Pool ID : 0
User Pool ID : 0
Auto Update Atime : 0
Work Controller ID : 0
Owner Controller ID : 0
Final Work Controller ID : 0
Home Pair ID : 0
Fs Alloc Type : 1
Fs Capacity : 35184372088832(sector)
Fs WWN : 79-BF-21-81-FF-FF-FF-FF-15-FB-C7-66-01-88-FF-00
Qos Priority : 4
Block Size : 65536
CRC : 1

System Response

The following table describes the parameter meanings.



FAI Addr

Address of the FAI memory structure.


Magic number of the FAI structure.


File system ID on the service layer.


File system version.

Reference Count

Count of FAI memory structure references.

Is Init

Whether the FAI structure is initialized.

Is Used

Whether the file system is used.

Root Object ID

ID of the root directory object.

Volume ID

ID of the file system or writable snapshot.

IO Switch

Variable for describing file system status.

IO Count

Count of execution operations delivered by the file system.

Total IO Count

Count of execution operations delivered by the file system and associated snapshots.

User Pool Free Capacity

Available space of the user pool, expressed in sectors. This parameter is used for space statistics and set and controlled by the system.

Fs Status

File system status.

Fs Repair Status

Data repair status of the file system.

RW Status

Read/Write status of the file system.

Background Serivce Status

Whether the background service is enabled.

Hang Count

Count of I/O suspension by the file system.

Block Count

Count of I/O blocking by the file system.

Config Fs ID

File system ID.

Fs Name

File system name.

Is Read Only

Whether the file system is marked as read-only.

Is Cache Migrating

Tag of cache partitioning by the file system.

Space ID

ID of the file system distributor.

Disk Pool ID

ID of the disk pool to which the file system belongs.

User Pool ID

ID of the user pool to which the file system belongs.

Auto Update Atime

Whether updating file access time is enabled for the file system.

Work Controller ID

ID of the working controller of the file system.

Owner Controller ID

ID of the owning controller of the file system.

Final Work Controller ID

ID of the final working controller of the file system.

Home Pair ID

ID of the home engine of the file system.

Fs Alloc Type

Allocation type of the file system Dev LUN.

Fs Capacity

File system capacity.


File system WWN.

Qos Priority

REQ priority.

Block Size

Block size of the file system.


CRC code of the file system.

Updated: 2020-01-17

Document ID: EDOC1000181602

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