Percona XtraBackup moved to https://jira.percona.com/projects/PXB

  1. Bug #1047886
  2. Comment #6

Comment 6 for bug 1047886

Revision history for this message
Raghavendra D Prabhu (raghavendra-prabhu) wrote : Re: Adding --no-lock in wsrep_sst_xtrabackup causes SST to fail

Actually, Galera, atleast now, supports wsrep replication position in InnoDB headers, much like how the replication position is stored and recovered during prepare phase of Xtrabackup.

According to discussion I had, it stored as follows:

""
Wsrep GTID is found from InnoDB sys_header + TRX_SYS_WSREP_XID_INFO, see:
* storage/innobase/include/trx0sys.h for TRX_SYS_WSREP_XID_INFO and other definitions
* storage/innobase/trx/trx0sys.c:trx_sys_read_wsrep_checkpoint() for reading XID from sys_header
* sql/wsrep_mysqld.h and sql/wsrep_utils.cc how to read GTID from XID (wsrep_xid_{uuid|seqno})
* XID is defined in sql/handler.h and storage/innobase/include/trx0xa.h
""

May be a different bug can be opened for this if required.