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# 2001 October 12
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library. The
# focus of this file is testing for correct handling of I/O errors
# such as writes failing because the disk is full.
#
# The tests in this file use special facilities that are only
# available in the SQLite test fixture.
#
# $Id: ioerr.test,v 1.43 2009/04/06 17:50:03 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# If SQLITE_DEFAULT_AUTOVACUUM is set to true, then a simulated IO error
# on the 8th IO operation in the SQL script below doesn't report an error.
#
# This is because the 8th IO call attempts to read page 2 of the database
# file when the file on disk is only 1 page. The pager layer detects that
# this has happened and suppresses the error returned by the OS layer.
#
do_ioerr_test ioerr-1 -erc 1 -ckrefcount 1 -sqlprep {
SELECT * FROM sqlite_master;
} -sqlbody {
CREATE TABLE t1(a,b,c);
SELECT * FROM sqlite_master;
BEGIN TRANSACTION;
INSERT INTO t1 VALUES(1,2,3);
INSERT INTO t1 VALUES(4,5,6);
ROLLBACK;
SELECT * FROM t1;
BEGIN TRANSACTION;
INSERT INTO t1 VALUES(1,2,3);
INSERT INTO t1 VALUES(4,5,6);
COMMIT;
SELECT * FROM t1;
DELETE FROM t1 WHERE a<100;
} -exclude [expr [string match [execsql {pragma auto_vacuum}] 1] ? 4 : 0]
# Test for IO errors during a VACUUM.
#
# The first IO call is excluded from the test. This call attempts to read
# the file-header of the temporary database used by VACUUM. Since the
# database doesn't exist at that point, the IO error is not detected.
#
# Additionally, if auto-vacuum is enabled, the 12th IO error is not
# detected. Same reason as the 8th in the test case above.
#
ifcapable vacuum {
do_ioerr_test ioerr-2 -cksum true -ckrefcount true -sqlprep {
BEGIN;
CREATE TABLE t1(a, b, c);
INSERT INTO t1 VALUES(1, randstr(50,50), randstr(50,50));
INSERT INTO t1 SELECT a+2, b||'-'||rowid, c||'-'||rowid FROM t1;
INSERT INTO t1 SELECT a+4, b||'-'||rowid, c||'-'||rowid FROM t1;
INSERT INTO t1 SELECT a+8, b||'-'||rowid, c||'-'||rowid FROM t1;
INSERT INTO t1 SELECT a+16, b||'-'||rowid, c||'-'||rowid FROM t1;
INSERT INTO t1 SELECT a+32, b||'-'||rowid, c||'-'||rowid FROM t1;
INSERT INTO t1 SELECT a+64, b||'-'||rowid, c||'-'||rowid FROM t1;
INSERT INTO t1 SELECT a+128, b||'-'||rowid, c||'-'||rowid FROM t1;
INSERT INTO t1 VALUES(1, randstr(600,600), randstr(600,600));
CREATE TABLE t2 AS SELECT * FROM t1;
CREATE TABLE t3 AS SELECT * FROM t1;
COMMIT;
DROP TABLE t2;
} -sqlbody {
VACUUM;
} -exclude [list \
1 [expr [string match [execsql {pragma auto_vacuum}] 1]?9:-1]]
}
do_ioerr_test ioerr-3 -ckrefcount true -tclprep {
execsql {
PRAGMA cache_size = 10;
BEGIN;
CREATE TABLE abc(a);
INSERT INTO abc VALUES(randstr(1500,1500)); -- Page 4 is overflow
}
for {set i 0} {$i<150} {incr i} {
execsql {
INSERT INTO abc VALUES(randstr(100,100));
}
}
execsql COMMIT
} -sqlbody {
CREATE TABLE abc2(a);
BEGIN;
DELETE FROM abc WHERE length(a)>100;
UPDATE abc SET a = randstr(90,90);
COMMIT;
CREATE TABLE abc3(a);
}
# Test IO errors that can occur retrieving a record header that flows over
# onto an overflow page.
do_ioerr_test ioerr-4 -ckrefcount true -tclprep {
set sql "CREATE TABLE abc(a1"
for {set i 2} {$i<1300} {incr i} {
append sql ", a$i"
}
append sql ");"
execsql $sql
execsql {INSERT INTO abc (a1) VALUES(NULL)}
} -sqlbody {
SELECT * FROM abc;
}
# Test IO errors that may occur during a multi-file commit.
#
# Tests 8 and 17 are excluded when auto-vacuum is enabled for the same
# reason as in test cases ioerr-1.XXX
ifcapable attach {
set ex ""
if {[string match [execsql {pragma auto_vacuum}] 1]} {
set ex [list 4 17]
}
do_ioerr_test ioerr-5 -restoreprng 0 -ckrefcount true -sqlprep {
ATTACH 'test2.db' AS test2;
} -sqlbody {
BEGIN;
CREATE TABLE t1(a,b,c);
CREATE TABLE test2.t2(a,b,c);
COMMIT;
} -exclude $ex
}
# Test IO errors when replaying two hot journals from a 2-file
# transaction. This test only runs on UNIX.
#
# It cannot be run under the "exclusive" permutation. In that case, the
# locks held by the connection in the local (this) process prevent a
# second connection from attempting the multi-file transaction.
#
ifcapable crashtest&&attach {
if {![catch {sqlite3 -has-codec} r] && !$r && [permutation]!="exclusive"} {
do_ioerr_test ioerr-6 -ckrefcount true -tclprep {
execsql {
ATTACH 'test2.db' as aux;
CREATE TABLE tx(a, b);
CREATE TABLE aux.ty(a, b);
}
set rc [crashsql -delay 2 -file test2.db-journal {
ATTACH 'test2.db' as aux;
PRAGMA cache_size = 10;
BEGIN;
CREATE TABLE aux.t2(a, b, c);
CREATE TABLE t1(a, b, c);
COMMIT;
}]
if {$rc!="1 {child process exited abnormally}"} {
error "Wrong error message: $rc"
}
} -sqlbody {
SELECT * FROM sqlite_master;
SELECT * FROM aux.sqlite_master;
}
}
}
# Test handling of IO errors that occur while rolling back hot journal
# files.
#
# These tests can't be run on windows because the windows version of
# SQLite holds a mandatory exclusive lock on journal files it has open.
#
if {$tcl_platform(platform)!="windows"} {
do_ioerr_test ioerr-7 -tclprep {
db close
sqlite3 db2 test2.db
db2 eval {
PRAGMA synchronous = 0;
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(1, 2);
BEGIN;
INSERT INTO t1 VALUES(3, 4);
}
forcecopy test2.db test.db
forcecopy test2.db-journal test.db-journal
db2 close
} -tclbody {
sqlite3 db test.db
db eval {
SELECT * FROM t1;
}
} -exclude 1
}
# For test coverage: Cause an I/O failure while trying to read a
# short field (one that fits into a Mem buffer without mallocing
# for space).
#
do_ioerr_test ioerr-8 -ckrefcount true -tclprep {
execsql {
CREATE TABLE t1(a,b,c);
INSERT INTO t1 VALUES(randstr(200,200), randstr(1000,1000), 2);
}
db close
sqlite3 db test.db
} -sqlbody {
SELECT c FROM t1;
}
# For test coverage: Cause an IO error whilst reading the master-journal
# name from a journal file.
if {$tcl_platform(platform)=="unix"} {
do_ioerr_test ioerr-9 -ckrefcount true -tclprep {
execsql {
CREATE TABLE t1(a,b,c);
INSERT INTO t1 VALUES(randstr(200,200), randstr(1000,1000), 2);
BEGIN;
INSERT INTO t1 VALUES(randstr(200,200), randstr(1000,1000), 2);
}
forcecopy test.db-journal test2.db-journal
execsql {
COMMIT;
}
forcecopy test2.db-journal test.db-journal
set f [open test.db-journal a]
fconfigure $f -encoding binary
puts -nonewline $f "hello"
puts -nonewline $f "\x00\x00\x00\x05\x01\x02\x03\x04"
puts -nonewline $f "\xd9\xd5\x05\xf9\x20\xa1\x63\xd7"
close $f
} -sqlbody {
SELECT a FROM t1;
}
}
# For test coverage: Cause an IO error during statement playback (i.e.
# a constraint).
do_ioerr_test ioerr-10 -ckrefcount true -tclprep {
execsql {
BEGIN;
CREATE TABLE t1(a PRIMARY KEY, b);
}
for {set i 0} {$i < 500} {incr i} {
execsql {INSERT INTO t1 VALUES(:i, 'hello world');}
}
execsql {
COMMIT;
}
} -tclbody {
catch {execsql {
BEGIN;
INSERT INTO t1 VALUES('abc', 123);
INSERT INTO t1 VALUES('def', 123);
INSERT INTO t1 VALUES('ghi', 123);
INSERT INTO t1 SELECT (a+500)%900, 'good string' FROM t1;
}} msg
if {$msg != "column a is not unique"} {
error $msg
}
}
# Assertion fault bug reported by alex dimitrov.
#
do_ioerr_test ioerr-11 -ckrefcount true -erc 1 -sqlprep {
CREATE TABLE A(Id INTEGER, Name TEXT);
INSERT INTO A(Id, Name) VALUES(1, 'Name');
} -sqlbody {
UPDATE A SET Id = 2, Name = 'Name2' WHERE Id = 1;
}
# Test that an io error encountered in a sync() caused by a call to
# sqlite3_release_memory() is handled Ok. Only try this if
# memory-management is enabled.
#
ifcapable memorymanage {
do_ioerr_test memmanage-ioerr1 -ckrefcount true -sqlprep {
BEGIN;
CREATE TABLE t1(a, b, c);
INSERT INTO t1 VALUES(randstr(50,50), randstr(100,100), randstr(10,10));
INSERT INTO t1 SELECT randstr(50,50), randstr(9,9), randstr(90,90) FROM t1;
INSERT INTO t1 SELECT randstr(50,50), randstr(9,9), randstr(90,90) FROM t1;
INSERT INTO t1 SELECT randstr(50,50), randstr(9,9), randstr(90,90) FROM t1;
INSERT INTO t1 SELECT randstr(50,50), randstr(9,9), randstr(90,90) FROM t1;
INSERT INTO t1 SELECT randstr(50,50), randstr(9,9), randstr(90,90) FROM t1;
} -tclbody {
sqlite3_release_memory
} -sqlbody {
COMMIT;
}
}
ifcapable pager_pragmas&&autovacuum {
do_ioerr_test ioerr-12 -ckrefcount true -erc 1 -sqlprep {
PRAGMA page_size = 512;
PRAGMA auto_vacuum = incremental;
CREATE TABLE t1(x);
INSERT INTO t1 VALUES( randomblob(1 * (512-4)) );
INSERT INTO t1 VALUES( randomblob(110 * (512-4)) );
INSERT INTO t1 VALUES( randomblob(2 * (512-4)) );
INSERT INTO t1 VALUES( randomblob(110 * (512-4)) );
INSERT INTO t1 VALUES( randomblob(3 * (512-4)) );
DELETE FROM t1 WHERE rowid = 3;
PRAGMA incremental_vacuum = 2;
DELETE FROM t1 WHERE rowid = 1;
} -sqlbody {
PRAGMA incremental_vacuum = 1;
}
}
# Usually, after a new page is allocated from the end of the file, it does
# not need to be written to the journal. The exception is when the new page
# shares its sector with an existing page that does need to be journalled.
# This test case provokes this condition to test for the sake of coverage
# that an IO error while journalling the coresident page is handled correctly.
#
sqlite3_simulate_device -char {} -sectorsize 2048
do_ioerr_test ioerr-12 -ckrefcount true -erc 1 -tclprep {
db close
sqlite3 db test.db -vfs devsym
# Create a test database. Page 2 is the root page of table t1. The only
# row inserted into t1 has an overflow page - page 3. Page 3 will be
# coresident on the 2048 byte sector with the next page to be allocated.
#
db eval { PRAGMA page_size = 1024 }
db eval { CREATE TABLE t1(x) }
db eval { INSERT INTO t1 VALUES(randomblob(1100)); }
} -tclbody {
db eval { INSERT INTO t1 VALUES(randomblob(2000)); }
}
sqlite3_simulate_device -char {} -sectorsize 0
catch {db close}
do_ioerr_test ioerr-13 -ckrefcount true -erc 1 -sqlprep {
PRAGMA auto_vacuum = incremental;
CREATE TABLE t1(x);
CREATE TABLE t2(x);
INSERT INTO t2 VALUES(randomblob(1500));
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t1 VALUES(randomblob(20));
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1; /* 64 entries in t1 */
INSERT INTO t1 SELECT x FROM t1 LIMIT 14; /* 78 entries in t1 */
DELETE FROM t2 WHERE rowid = 3;
} -sqlbody {
-- This statement uses the balance_quick() optimization. The new page
-- is appended to the database file. But the overflow page used by
-- the new record will be positioned near the start of the database
-- file, in the gap left by the "DELETE FROM t2 WHERE rowid=3" statement
-- above.
--
-- The point of this is that the statement wil need to update two pointer
-- map pages. Which introduces another opportunity for an IO error.
--
INSERT INTO t1 VALUES(randomblob(2000));
}
do_ioerr_test ioerr-14 -ckrefcount true -erc 1 -sqlprep {
PRAGMA auto_vacuum = incremental;
CREATE TABLE t1(x);
CREATE TABLE t2(x);
INSERT INTO t2 VALUES(randomblob(1500));
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
INSERT INTO t2 SELECT randomblob(1500) FROM t2;
-- This statement inserts a row into t1 with an overflow page at the
-- end of the file. A long way from its parent (the root of t1).
INSERT INTO t1 VALUES(randomblob(1500));
DELETE FROM t2 WHERE rowid<10;
} -sqlbody {
-- This transaction will cause the root-page of table t1 to divide
-- (by calling balance_deeper()). When it does, the "parent" page of the
-- overflow page inserted in the -sqlprep block above will change and
-- the corresponding pointer map page be updated. This test case attempts
-- to cause an IO error during the pointer map page update.
--
BEGIN;
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
INSERT INTO t1 VALUES(randomblob(100));
COMMIT;
}
do_ioerr_test ioerr-15 -tclprep {
db eval {
BEGIN;
PRAGMA cache_size = 10;
CREATE TABLE t1(a);
CREATE INDEX i1 ON t1(a);
CREATE TABLE t2(a);
}
for {set ii 1} {$ii < 100} {incr ii} {
set v [string range [string repeat [format %.3d $ii] 200] 0 220]
db eval {INSERT INTO t1 VALUES($v)}
}
db eval {
DELETE FROM t1 WHERE oid > 85;
COMMIT;
}
} -sqlbody {
BEGIN;
INSERT INTO t2 VALUES(randstr(22000,22000));
DELETE FROM t1 WHERE oid = 83;
COMMIT;
}
# This test verifies that IO errors that occur within the obscure branch
# of code executed by tkt3762.test are correctly reported.
#
ifcapable vacuum&&autovacuum&&pragma {
do_ioerr_test ioerr-16 -erc 1 -ckrefcount 1 -sqlprep {
PRAGMA auto_vacuum=INCREMENTAL;
PRAGMA page_size=1024;
BEGIN;
CREATE TABLE t1(x);
INSERT INTO t1 VALUES(zeroblob(900));
INSERT INTO t1 VALUES(zeroblob(900));
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
INSERT INTO t1 SELECT x FROM t1;
DELETE FROM t1 WHERE rowid>202;
COMMIT;
VACUUM;
PRAGMA cache_size = 10;
BEGIN;
DELETE FROM t1 WHERE rowid IN (10,11,12) ;
} -sqlbody {
PRAGMA incremental_vacuum(10);
COMMIT;
}
}
finish_test
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