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3717dc149e
This is the beginning of a collection of SQL-callable functions to verify the integrity of data files. For now it only contains code to verify B-Tree indexes. This adds two SQL-callable functions, validating B-Tree consistency to a varying degree. Check the, extensive, docs for details. The goal is to later extend the coverage of the module to further access methods, possibly including the heap. Once checks for additional access methods exist, we'll likely add some "dispatch" functions that cover multiple access methods. Author: Peter Geoghegan, editorialized by Andres Freund Reviewed-By: Andres Freund, Tomas Vondra, Thomas Munro, Anastasia Lubennikova, Robert Haas, Amit Langote Discussion: CAM3SWZQzLMhMwmBqjzK+pRKXrNUZ4w90wYMUWfkeV8mZ3Debvw@mail.gmail.com
60 lines
1.9 KiB
PL/PgSQL
60 lines
1.9 KiB
PL/PgSQL
-- minimal test, basically just verifying that amcheck
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CREATE TABLE bttest_a(id int8);
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CREATE TABLE bttest_b(id int8);
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INSERT INTO bttest_a SELECT * FROM generate_series(1, 100000);
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INSERT INTO bttest_b SELECT * FROM generate_series(100000, 1, -1);
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CREATE INDEX bttest_a_idx ON bttest_a USING btree (id);
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CREATE INDEX bttest_b_idx ON bttest_b USING btree (id);
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CREATE ROLE bttest_role;
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-- verify permissions are checked (error due to function not callable)
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SET ROLE bttest_role;
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SELECT bt_index_check('bttest_a_idx'::regclass);
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SELECT bt_index_parent_check('bttest_a_idx'::regclass);
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RESET ROLE;
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-- we, intentionally, don't check relation permissions - it's useful
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-- to run this cluster-wide with a restricted account, and as tested
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-- above explicit permission has to be granted for that.
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GRANT EXECUTE ON FUNCTION bt_index_check(regclass) TO bttest_role;
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GRANT EXECUTE ON FUNCTION bt_index_parent_check(regclass) TO bttest_role;
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SET ROLE bttest_role;
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SELECT bt_index_check('bttest_a_idx');
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SELECT bt_index_parent_check('bttest_a_idx');
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RESET ROLE;
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-- verify plain tables are rejected (error)
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SELECT bt_index_check('bttest_a');
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SELECT bt_index_parent_check('bttest_a');
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-- verify non-existing indexes are rejected (error)
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SELECT bt_index_check(17);
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SELECT bt_index_parent_check(17);
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-- verify wrong index types are rejected (error)
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BEGIN;
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CREATE INDEX bttest_a_brin_idx ON bttest_a USING brin(id);
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SELECT bt_index_parent_check('bttest_a_brin_idx');
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ROLLBACK;
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-- normal check outside of xact
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SELECT bt_index_check('bttest_a_idx');
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-- more expansive test
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SELECT bt_index_parent_check('bttest_b_idx');
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BEGIN;
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SELECT bt_index_check('bttest_a_idx');
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SELECT bt_index_parent_check('bttest_b_idx');
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-- make sure we don't have any leftover locks
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SELECT * FROM pg_locks WHERE relation IN ('bttest_a_idx'::regclass, 'bttest_b_idx'::regclass);
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COMMIT;
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-- cleanup
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DROP TABLE bttest_a;
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DROP TABLE bttest_b;
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DROP OWNED BY bttest_role; -- permissions
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DROP ROLE bttest_role;
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