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Block-level incremental backup.

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The primary goal of the block incremental backup is to save space in the repository by only storing changed parts of a file rather than the entire file. This implementation is focused on restore performance more than saving space in the repository, though there may be substantial savings depending on the workload.

The repo-block option enables the feature (when repo-bundle is already enabled). The block size is determined based on the file size and age. Very old or very small files will not use block incremental.
This commit is contained in:
David Steele
2023-01-20 16:48:57 +07:00
committed by GitHub
parent 008a18555c
commit 912eec63bb
47 changed files with 3370 additions and 221 deletions
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8
test/src/module/command/infoTest.c
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@ -675,8 +675,8 @@ testRun(void)
"\"backup-annotation\":{\"extra key\":\"this is an annotation\",\"source\":\"this is another annotation\"},"
"\"backup-archive-start\":\"000000010000000000000005\",\"backup-archive-stop\":\"000000010000000000000005\","
"\"backup-error\":false,\"backup-info-repo-size\":2369186,"
"\"backup-info-repo-size-delta\":346,\"backup-info-size\":20162900,\"backup-info-size-delta\":8428,"
"\"backup-lsn-start\":\"285/89000028\","
"\"backup-info-repo-size-delta\":346,\"backup-info-repo-size-map\":100,\"backup-info-repo-size-map-delta\":12"
",\"backup-info-size\":20162900,\"backup-info-size-delta\":8428,\"backup-lsn-start\":\"285/89000028\","
"\"backup-prior\":\"20201116-155000F\",\"backup-reference\":[\"20201116-155000F\"],"
"\"backup-timestamp-start\":1605799260,\"backup-timestamp-stop\":1605799263,\"backup-type\":\"incr\","
"\"db-id\":2,\"option-archive-check\":true,\"option-archive-copy\":false,\"option-backup-standby\":false,"
@ -1251,7 +1251,9 @@ testRun(void)
"\"delta\":8428,"
"\"repository\":{"
"\"delta\":346,"
"\"size\":2369186"
"\"delta-map\":12,"
"\"size\":2369186,"
"\"size-map\":100"
"},"
"\"size\":20162900"
"},"