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Advanced O&M Command Reference

OceanStor 5000, 5000F, 6000, and 6000F V5 Series V500R007

This document is applicable to OceanStor 5110 V5, 5110F V5, 5300 V5, 5500 V5, 5600 V5, 5800 V5, 6800 V5, 5300F V5, 5500F V5, 5600F V5, 5800F V5, and 6800F 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 space uberblock

show space uberblock

Function

The show space uberblock command is used to query uberblock information.

Format

show space uberblock file_system_id=? [ backup_id=? ] [ index=? ]

Parameters

Parameter

Description

Value

file_system_id=?

File system ID.

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

backup_id=?

Which uberblock will be read.

The value can be "0" or "1".

index=?

Uberblock index.

The value must be greater than or equal to "0", and less than or equal to "255".

Views

Developer view

Usage Guidelines

None

Example

  • Query uberblock information.
    developer:/>show space uberblock file_system_id=0  
     
      Space ID              : 0 
      Extent ID             : 0x400040000002/0x400040000003 
      Extent Offset         : 2048/2048 
      Physical Size         : 0 
      Last Synced Tno       : 19 
      Syncing Index         : 16 
      Ub Space Version      : 208 
      Ub Available          : YES 
      Ub Saved Checksum     : 4145507673 
      Ub Count Checksum     : 4145507673 
      Ub Magic              : 0x2bb10c 
      Ub Version            : 2 
      Ub Synced Tno         : 19 
      Ub Synced Time Second : 2015-07-27/12:09:07 UTC 
      Ub Index              : 15 
      Ub UUID               : 36 96 82 2c f6  b  3 36 96 6f 52 b3 71 55 8b 73  
      Ub Crc                : 1
  • Query information about uberblocks by specifying the index.
    developer:/>show space uberblock file_system_id=0 index=1 
      
      Space ID              : 0 
      Extent ID             : 0x400040000002/0x400040000003 
      Extent Offset         : 2048/2048 
      Physical Size         : 0 
      Last Synced Tno       : 19 
      Syncing Index         : 16 
      Ub Space Version      : 208 
      Ub Available          : YES 
      Ub Saved Checksum     : 4145507673 
      Ub Count Checksum     : 4145507673 
      Ub Magic              : 0x2bb10c 
      Ub Version            : 2 
      Ub Synced Tno         : 19 
      Ub Synced Time Second : 2015-07-27/12:09:07 UTC 
      Ub Index              : 15 
      Ub UUID               : 36 96 82 2c f6  b  3 36 96 6f 52 b3 71 55 8b 73  
      Ub Crc                : 1
  • Query information about a specified uberblock by specifying the index.
    developer:/>show space uberblock file_system_id=0 backup_id=1 index=1  
     
      Space ID              : 0 
      Extent ID             : 0x400040000002/0x400040000003 
      Extent Offset         : 2048/2048 
      Physical Size         : 0 
      Last Synced Tno       : 19 
      Syncing Index         : 16 
      Ub Space Version      : 208 
      Ub Available          : YES 
      Ub Saved Checksum     : 1894757535 
      Ub Count Checksum     : 1894757535 
      Ub Magic              : 0x2bb10c 
      Ub Version          : 2 
      Ub Synced Tno         : 3 
      Ub Synced Time Second : 2015-07-27/08:57:54 UTC 
      Ub Index              : 211 
      Ub UUID               : 36 96 82 2c f6  b  3 36 96 6f 52 b3 71 55 8b 73  
      Ub Crc                : 1

System Response

The following table describes the parameter meanings.

Parameter

Meaning

Space ID

Space ID.

Extent ID

Extent ID of the uberblock.

Extent Offset

Uberblock's offset in the extent.

Physical Size

Physical size of the uberblock in the extent.

Last Synced Tno

Uberblock transaction ID of the last successful cache flushing.

Syncing Index

Index of the uberblock for which the next cache flushing will be performed.

Ub Available

Whether the uberblock is available or not.

Ub Saved Checksum

Checksum stored in the uberblock.

Ub Count Checksum

Checksum calculated by the uberblock.

Ub Magic

Magic number of the uberblock.

Ub Version

Version of uberblock.

Ub Synced Tno

Cache flushing ID of the uberblock.

Ub Synced Time Second

Cache flushing time of the uberblock (UTC).

Ub Index

Index of the uberblock.

Ub UUID

UUID of the uberblock.

Ub Crc

CRC of the uberblock.

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Updated: 2019-07-11

Document ID: EDOC1000181619

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