The initialization fork was added in 9.1, but has not been taken into
consideration in documents of get_raw_page function in pageinspect and
storage layout. This commit fixes those oversights.
get_raw_page can read not only a table but also an index, etc. So it
should be documented that the function can read any relation. This commit
also fixes the document of pageinspect that way.
Back-patch to 9.1 where those oversights existed.
Vik Fearing, review by MauMau
get_raw_page reads the specified block of the named
- table and returns a copy as a bytea> value. This allows a
+ relation and returns a copy as a bytea> value. This allows a
single time-consistent copy of the block to be obtained.
fork should be 'main' for
- the main data fork, or 'fsm' for the free space map,
- or 'vm' for the visibility map.
+ the main data fork, 'fsm' for the free space map,
+ 'vm' for the visibility map, or 'init'
+ for the initialization fork.
as a substitute for remembering many of the above rules. But keep in
mind that this function just gives the name of the first segment of the
main fork of the relation — you may need to append a segment number
-and/or _fsm> or _vm> to find all the files associated
-with the relation.
+and/or _fsm>, _vm>, or _init> to find all
+the files associated with the relation.