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Process shared_preload_libraries in single-user mode.

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Without processing shared_preload_libraries, it's impossible to
recover if custom WAL resource managers are needed. It may also pose a
problem running VACUUM on a table with a custom AM, if the module
implementing the AM is expecting to be loaded by
shared_preload_libraries.

The reason this wasn't done before was just the general principle to
do fewer things in single-user mode. But it's easy enough to just set
shared_preload_libraries to empty, for the same effect.

Discussion: https://postgr.es/m/9decc18a42634f8a2f15c97a385a0f51a752f396.camel%40j-davis.com
Reviewed-by: Tom Lane, Andres Freund
Backpatch-through: 15
This commit is contained in:
Jeff Davis 2022-07-15 12:24:10 -07:00
parent 0829cc43ed
commit 2103266a36
1 changed files with 23 additions and 0 deletions
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23
src/backend/tcop/postgres.c
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@ -4009,9 +4009,32 @@ PostgresSingleUserMain(int argc, char *argv[],
/* read control file (error checking and contains config ) */
LocalProcessControlFile(false);
/*
* process any libraries that should be preloaded at postmaster start
*/
process_shared_preload_libraries();
/* Initialize MaxBackends */
InitializeMaxBackends();
/*
* Give preloaded libraries a chance to request additional shared memory.
*/
process_shmem_requests();
/*
* Now that loadable modules have had their chance to request additional
* shared memory, determine the value of any runtime-computed GUCs that
* depend on the amount of shared memory required.
*/
InitializeShmemGUCs();
/*
* Now that modules have been loaded, we can process any custom resource
* managers specified in the wal_consistency_checking GUC.
*/
InitializeWalConsistencyChecking();
CreateSharedMemoryAndSemaphores();
/*