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Alvaro Herrera e3fb6170e5
Avoid creating archive status ".ready" files too early 
WAL records may span multiple segments, but XLogWrite() does not
wait for the entire record to be written out to disk before
creating archive status files.  Instead, as soon as the last WAL page of
the segment is written, the archive status file is created, and the
archiver may process it.  If PostgreSQL crashes before it is able to
write and flush the rest of the record (in the next WAL segment), the
wrong version of the first segment file lingers in the archive, which
causes operations such as point-in-time restores to fail.

To fix this, keep track of records that span across segments and ensure
that segments are only marked ready-for-archival once such records have
been completely written to disk.

This has always been wrong, so backpatch all the way back.

Author: Nathan Bossart <bossartn@amazon.com>
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reviewed-by: Ryo Matsumura <matsumura.ryo@fujitsu.com>
Reviewed-by: Andrey Borodin <x4mmm@yandex-team.ru>
Discussion: https://postgr.es/m/CBDDFA01-6E40-46BB-9F98-9340F4379505@amazon.com
2021-08-23 15:50:35 -04:00
..
amapi.h Pass down "logically unchanged index" hint. 2021-01-13 08:11:00 -08:00
amvalidate.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
attmap.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
attnum.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
brin.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
brin_internal.h Move IS [NOT] NULL handling from BRIN support functions 2021-03-23 00:45:42 +01:00
brin_page.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
brin_pageops.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
brin_revmap.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
brin_tuple.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
brin_xlog.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
bufmask.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
clog.h Remove unused function prototypes. 2021-01-05 11:42:38 +13:00
commit_ts.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
detoast.h Allow configurable LZ4 TOAST compression. 2021-03-19 15:10:38 -04:00
genam.h Simplify state managed by VACUUM. 2021-04-05 13:21:44 -07:00
generic_xlog.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
gin.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
gin_private.h Pass down "logically unchanged index" hint. 2021-01-13 08:11:00 -08:00
ginblock.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
ginxlog.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
gist.h C comments: improve description of GiST NSN and GistBuildLSN 2021-03-10 17:03:10 -05:00
gist_private.h Pass down "logically unchanged index" hint. 2021-01-13 08:11:00 -08:00
gistscan.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
gistxlog.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
hash.h Pass down "logically unchanged index" hint. 2021-01-13 08:11:00 -08:00
hash_xlog.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
heapam.h Remove tupgone special case from vacuumlazy.c. 2021-04-06 08:49:22 -07:00
heapam_xlog.h Remove tupgone special case from vacuumlazy.c. 2021-04-06 08:49:22 -07:00
heaptoast.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
hio.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
htup.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
htup_details.h Rework HeapTupleHeader macros to reuse itemptr.h 2021-03-25 15:47:48 -03:00
itup.h Support INCLUDE'd columns in SP-GiST. 2021-04-05 18:41:21 -04:00
multixact.h Remove unused function prototypes. 2021-01-05 11:42:38 +13:00
nbtree.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
nbtxlog.h Don't consider newly inserted tuples in nbtree VACUUM. 2021-03-10 16:27:01 -08:00
parallel.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
printsimple.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
printtup.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
relation.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
reloptions.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
relscan.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
rewriteheap.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
rmgr.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
rmgrlist.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
sdir.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
session.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
skey.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
slru.h Prevent excess SimpleLruTruncate() deletion. 2021-01-16 12:21:35 -08:00
spgist.h Pass down "logically unchanged index" hint. 2021-01-13 08:11:00 -08:00
spgist_private.h Re-order pg_attribute columns to eliminate some padding space. 2021-05-23 12:12:09 -04:00
spgxlog.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
stratnum.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
subtrans.h Remove unused function prototypes. 2021-01-05 11:42:38 +13:00
syncscan.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
sysattr.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
table.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
tableam.h Simplify state managed by VACUUM. 2021-04-05 13:21:44 -07:00
timeline.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
toast_compression.h Rethink definition of pg_attribute.attcompression. 2021-05-27 13:24:27 -04:00
toast_helper.h Allow configurable LZ4 TOAST compression. 2021-03-19 15:10:38 -04:00
toast_internals.h Short-circuit slice requests that are for more than the object's size. 2021-03-22 14:01:20 -04:00
transam.h Reduce the range of OIDs reserved for genbki.pl. 2021-05-27 15:55:08 -04:00
tsmapi.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
tupconvert.h Fix permission checks on constraint violation errors on partitions. 2021-02-08 11:01:51 +02:00
tupdesc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
tupdesc_details.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
tupmacs.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
twophase.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
twophase_rmgr.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
valid.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
visibilitymap.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
xact.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
xlog.h Avoid creating archive status ".ready" files too early 2021-08-23 15:50:35 -04:00
xlog_internal.h Remove COMMIT_TS_SETTS record. 2021-04-12 00:04:30 +09:00
xlogarchive.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
xlogdefs.h Avoid creating archive status ".ready" files too early 2021-08-23 15:50:35 -04:00
xloginsert.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
xlogreader.h Revert recovery prefetching feature. 2021-05-10 16:06:09 +12:00
xlogrecord.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
xlogutils.h Revert recovery prefetching feature. 2021-05-10 16:06:09 +12:00