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Full/incremental backup method.

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This backup method does a preliminary copy of all files that were last modified prior to a defined interval before calling pg_backup_start(). Then the backup is started as usual and the remainder of the files are copied. The advantage is that generally a smaller set of WAL will be required to make the backup consistent, provided there are some files that have not been recently modified.

The length of the prior full backup is used to determine the interval used for the preliminary copy since any files modified within this interval will likely be modified again during the backup. If no prior full backup exists then the interval is set to one day.

This feature is being committed as internal-only for the time being.
This commit is contained in:
David Steele
2024-11-26 11:23:43 -05:00
committed by GitHub
parent 0577b03016
commit cad595f9f8
26 changed files with 856 additions and 230 deletions
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5
test/src/module/postgres/interfaceTest.c
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@ -110,8 +110,8 @@ testRun(void)
// -------------------------------------------------------------------------------------------------------------------------
HRN_PG_CONTROL_PUT(
storageTest, PG_VERSION_11, .systemId = 0xFACEFACE, .checkpoint = 0xEEFFEEFFAABBAABB, .timeline = 47,
.walSegmentSize = 1024 * 1024);
storageTest, PG_VERSION_11, .systemId = 0xFACEFACE, .checkpoint = 0xEEFFEEFFAABBAABB, .checkpointTime = 555,
.timeline = 47, .walSegmentSize = 1024 * 1024);
PgControl info = {0};
TEST_ASSIGN(info, pgControlFromFile(storageTest, NULL), "get control info v11");
@ -119,6 +119,7 @@ testRun(void)
TEST_RESULT_UINT(info.version, PG_VERSION_11, " check version");
TEST_RESULT_UINT(info.catalogVersion, 201809051, " check catalog version");
TEST_RESULT_UINT(info.checkpoint, 0xEEFFEEFFAABBAABB, "check checkpoint");
TEST_RESULT_INT(info.checkpointTime, 555, "check checkpoint time");
TEST_RESULT_UINT(info.timeline, 47, "check timeline");
// -------------------------------------------------------------------------------------------------------------------------