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8.2.8 DUMP 20

Code Symbol Kernel Block(s)
20 [none] BACKUP

Description.  Prints the values of BackupDataBufferSize, BackupLogBufferSize, BackupWriteSize, and BackupMaxWriteSize

Sample Output. 

2014-10-13 21:04:13 [MgmtSrvr] INFO     -- Node 5: Backup: data: 17039872 log: 17039872 min: 262144 max: 1048576
2014-10-13 21:04:13 [MgmtSrvr] INFO     -- Node 6: Backup: data: 17039872 log: 17039872 min: 262144 max: 1048576

Additional Information.  This command can also be used to set these parameters, as in this example:

ndb_mgm> ALL DUMP 20 3 3 64 512
ALL DUMP 20 3 3 64 512
Sending dump signal with data:
0x00000014 0x00000003 0x00000003 0x00000040 
0x00000200 
Sending dump signal with data:
0x00000014 0x00000003 0x00000003 0x00000040 
0x00000200 

...

2014-10-13 21:05:52 [MgmtSrvr] INFO     -- Node 5: Backup: data: 3145728 log: 3145728 min: 65536 max: 524288
2014-10-13 21:05:52 [MgmtSrvr] INFO     -- Node 6: Backup: data: 3145728 log: 3145728 min: 65536 max: 524288
Warning

You must set each of these parameters to the same value on all nodes; otherwise, subsequent issuing of a START BACKUP command crashes the cluster.


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