## Notes 

The log part number 

• total 

Total space available for this log 

• used 

Space used by this log 

logbuffers  table rows reflecting two additional log types are available when performing an NDB backup. One of these rows has the log type BACKUP-DATA , which shows the amount of data buffer used during backup to copy fragments to backup files. The other row has the log type BACKUP-LOG , which displays the amount of log buffer used during the backup to record changes made after the backup has started. One each of these log_type  rows is shown in the logbuffers  table for each data node in the cluster. These rows are not present unless an NDB backup is currently being performed. 

## 23.5.14.34 The ndbinfo logspaces Table 

This table provides information about NDB Cluster log space usage. 

The logspaces  table contains the following columns: 

• node_id 

The ID of this data node. 

• log_type 

Type of log; one of: REDO  or DD-UNDO . 

• node_id 

The log ID; for Disk Data undo log files, this is the same as the value shown in the LOGFILE_GROUP_NUMBER  column of the INFORMATION_SCHEMA.FILES  table, as well as the value shown for the log_id  column of the ndbinfo logbuffers  table 

## 23.5.14.35 The ndbinfo membership Table 

• log_part 

The log part number. 

• total 

Total space available for this log. 

• used 

Space used by this log. 

The membership  table describes the view that each data node has of all the others in the cluster, including node group membership, president node, arbitrator, arbitrator successor, arbitrator connection states, and other information. 

The membership  table contains the following columns: 

