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Improve comment explaining how search_next_wal works with LSN

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This makes the explanation a bit clearer, as the LSN in this function
is used with the current timeline to generate the file name.
This commit is contained in:
Michael Paquier 2013-12-25 08:26:25 +09:00
parent ced83f7703
commit a66e683dd4
1 changed files with 6 additions and 1 deletions
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7
restore.c
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@ -1021,7 +1021,12 @@ search_next_wal(const char *path, XLogRecPtr *need_lsn, parray *timelines)
parray_remove(timelines, i + 1);
/* XXX: should we add a linebreak when we find a timeline? */
/* Move to next xlog segment */
/*
* Move to next xlog segment. Note that we need to increment
* by XLogSegSize to jump directly to the next WAL segment file
* and as this value is used to generate the WAL file name with
* the current timeline of backup.
*/
*need_lsn += XLogSegSize;
}
}