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Crash recovery on standby may encounter missing directories when replaying create database WAL records. Prior to this patch, the standby would fail to recover in such a case. However, the directories could be legitimately missing. Consider a sequence of WAL records as follows: CREATE DATABASE DROP DATABASE DROP TABLESPACE If, after replaying the last WAL record and removing the tablespace directory, the standby crashes and has to replay the create database record again, the crash recovery must be able to move on. This patch adds a mechanism similar to invalid-page tracking, to keep a tally of missing directories during crash recovery. If all the missing directory references are matched with corresponding drop records at the end of crash recovery, the standby can safely continue following the primary. Backpatch to 13, at least for now. The bug is older, but fixing it in older branches requires more careful study of the interactions with commit |
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access | ||
bootstrap | ||
catalog | ||
commands | ||
executor | ||
foreign | ||
jit | ||
lib | ||
libpq | ||
main | ||
nodes | ||
optimizer | ||
parser | ||
partitioning | ||
po | ||
port | ||
postmaster | ||
regex | ||
replication | ||
rewrite | ||
snowball | ||
statistics | ||
storage | ||
tcop | ||
tsearch | ||
utils | ||
.gitignore | ||
common.mk | ||
Makefile | ||
nls.mk |