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Overview
| Comment: | Fix some problems to do with temp-file databases and recovering from IO and SQLITE_FULL errors. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | tempfiles-25 |
| Files: | files | file ages | folders |
| SHA1: | 3d61da4a76af8c9c2a293df085f3ed5a |
| User & Date: | dan 2016-04-23 14:55:28 |
Context
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2016-04-23
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| 17:24 | Fix a problem with mixing temp-files and mmap-mode. check-in: c80c5c62 user: dan tags: tempfiles-25 | |
| 14:55 | Fix some problems to do with temp-file databases and recovering from IO and SQLITE_FULL errors. check-in: 3d61da4a user: dan tags: tempfiles-25 | |
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2016-04-21
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| 15:24 | Add a function prototype in order to fix a compiler warning. check-in: 49aec971 user: drh tags: tempfiles-25 | |
Changes
Changes to src/pager.c.
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** it can safely move back to PAGER_OPEN state. This happens in both ** normal and exclusive-locking mode. ** ** Exception: There is no way out of the error state for temp files. ** This is because it is not possible to call pager_reset() on a temp ** file pager (as this may discard the only copy of some data). */ assert( pPager->errCode==SQLITE_OK || !MEMDB ); if( pPager->tempFile==0 && pPager->errCode ){ pager_reset(pPager); pPager->changeCountDone = 0; pPager->eState = PAGER_OPEN; pPager->errCode = SQLITE_OK; if( USEFETCH(pPager) ) sqlite3OsUnfetch(pPager->fd, 0, 0); } pPager->journalOff = 0; pPager->journalHdr = 0; pPager->setMaster = 0; } ................................................................................ */ if( pagerUseWal(pPager) ){ pPg = 0; }else{ pPg = sqlite3PagerLookup(pPager, pgno); } assert( pPg || !MEMDB ); assert( pPager->eState!=PAGER_OPEN || pPg==0 ); PAGERTRACE(("PLAYBACK %d page %d hash(%08x) %s\n", PAGERID(pPager), pgno, pager_datahash(pPager->pageSize, (u8*)aData), (isMainJrnl?"main-journal":"sub-journal") )); if( isMainJrnl ){ isSynced = pPager->noSync || (*pOffset <= pPager->journalHdr); }else{ ................................................................................ */ int sqlite3PagerSharedLock(Pager *pPager){ int rc = SQLITE_OK; /* Return code */ /* This routine is only called from b-tree and only when there are no ** outstanding pages. This implies that the pager state should either ** be OPEN or READER. READER is only possible if the pager is or was in ** exclusive access mode. */ assert( sqlite3PcacheRefCount(pPager->pPCache)==0 ); assert( assert_pager_state(pPager) ); if( pPager->tempFile && pPager->errCode ) { return pPager->errCode; } assert( pPager->eState==PAGER_OPEN || pPager->eState==PAGER_READER ); if( !pagerUseWal(pPager) && pPager->eState==PAGER_OPEN ){ int bHotJournal = 1; /* True if there exists a hot journal-file */ assert( !MEMDB ); rc = pager_wait_on_lock(pPager, SHARED_LOCK); if( rc!=SQLITE_OK ){ assert( pPager->eLock==NO_LOCK || pPager->eLock==UNKNOWN_LOCK ); goto failed; } ................................................................................ ** probably did not sync it and we are required to always sync ** the journal before playing it back. */ if( isOpen(pPager->jfd) ){ assert( rc==SQLITE_OK ); rc = pagerSyncHotJournal(pPager); if( rc==SQLITE_OK ){ rc = pager_playback(pPager, 1); pPager->eState = PAGER_OPEN; } }else if( !pPager->exclusiveMode ){ pagerUnlockDb(pPager, SHARED_LOCK); } if( rc!=SQLITE_OK ){ ................................................................................ } if( pagerUseWal(pPager) ){ assert( rc==SQLITE_OK ); rc = pagerBeginReadTransaction(pPager); } if( pPager->eState==PAGER_OPEN && rc==SQLITE_OK ){ rc = pagerPagecount(pPager, &pPager->dbSize); } failed: if( rc!=SQLITE_OK ){ assert( !MEMDB ); pager_unlock(pPager); |
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** it can safely move back to PAGER_OPEN state. This happens in both ** normal and exclusive-locking mode. ** ** Exception: There is no way out of the error state for temp files. ** This is because it is not possible to call pager_reset() on a temp ** file pager (as this may discard the only copy of some data). */ assert( pPager->errCode==SQLITE_OK || !MEMDB ); if( pPager->errCode ){ if( pPager->tempFile==0 ){ pager_reset(pPager); pPager->changeCountDone = 0; pPager->eState = PAGER_OPEN; }else{ pPager->eState = (isOpen(pPager->jfd) ? PAGER_OPEN : PAGER_READER); } if( USEFETCH(pPager) ) sqlite3OsUnfetch(pPager->fd, 0, 0); pPager->errCode = SQLITE_OK; } pPager->journalOff = 0; pPager->journalHdr = 0; pPager->setMaster = 0; } ................................................................................ */ if( pagerUseWal(pPager) ){ pPg = 0; }else{ pPg = sqlite3PagerLookup(pPager, pgno); } assert( pPg || !MEMDB ); assert( pPager->eState!=PAGER_OPEN || pPg==0 || pPager->tempFile ); PAGERTRACE(("PLAYBACK %d page %d hash(%08x) %s\n", PAGERID(pPager), pgno, pager_datahash(pPager->pageSize, (u8*)aData), (isMainJrnl?"main-journal":"sub-journal") )); if( isMainJrnl ){ isSynced = pPager->noSync || (*pOffset <= pPager->journalHdr); }else{ ................................................................................ */ int sqlite3PagerSharedLock(Pager *pPager){ int rc = SQLITE_OK; /* Return code */ /* This routine is only called from b-tree and only when there are no ** outstanding pages. This implies that the pager state should either ** be OPEN or READER. READER is only possible if the pager is or was in ** exclusive access mode. */ assert( sqlite3PcacheRefCount(pPager->pPCache)==0 ); assert( assert_pager_state(pPager) ); assert( pPager->eState==PAGER_OPEN || pPager->eState==PAGER_READER ); assert( pPager->errCode==SQLITE_OK ); if( !pagerUseWal(pPager) && pPager->eState==PAGER_OPEN ){ int bHotJournal = 1; /* True if there exists a hot journal-file */ assert( !MEMDB ); assert( pPager->tempFile==0 || pPager->eLock==EXCLUSIVE_LOCK ); rc = pager_wait_on_lock(pPager, SHARED_LOCK); if( rc!=SQLITE_OK ){ assert( pPager->eLock==NO_LOCK || pPager->eLock==UNKNOWN_LOCK ); goto failed; } ................................................................................ ** probably did not sync it and we are required to always sync ** the journal before playing it back. */ if( isOpen(pPager->jfd) ){ assert( rc==SQLITE_OK ); rc = pagerSyncHotJournal(pPager); if( rc==SQLITE_OK ){ rc = pager_playback(pPager, !pPager->tempFile); pPager->eState = PAGER_OPEN; } }else if( !pPager->exclusiveMode ){ pagerUnlockDb(pPager, SHARED_LOCK); } if( rc!=SQLITE_OK ){ ................................................................................ } if( pagerUseWal(pPager) ){ assert( rc==SQLITE_OK ); rc = pagerBeginReadTransaction(pPager); } if( pPager->tempFile==0 && pPager->eState==PAGER_OPEN && rc==SQLITE_OK ){ rc = pagerPagecount(pPager, &pPager->dbSize); } failed: if( rc!=SQLITE_OK ){ assert( !MEMDB ); pager_unlock(pPager); |
Changes to test/tempfault.test.
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# set testdir [file dirname $argv0] source $testdir/tester.tcl source $testdir/malloc_common.tcl set testprefix tempfault sqlite3_memdebug_vfs_oom_test 0 do_faultsim_test 1 -faults oom* -prep { sqlite3 db "" db eval { PRAGMA page_size = 1024; CREATE TABLE t1(a, b); INSERT INTO t1 VALUES(1, 2); INSERT INTO t1 VALUES(3, 4); } ................................................................................ } if {$testrc==0 && $msg != "1 2 3 4 5 6"} { error "data mismatch 2: $msg" } faultsim_integrity_check } do_faultsim_test 2 -faults oom* -prep { sqlite3 db "" db eval { PRAGMA page_size = 1024; PRAGMA cache_size = 10; CREATE TABLE t1(a, b); CREATE INDEX i1 ON t1(b, a); WITH x(i) AS (SELECT 1 UNION ALL SELECT i+1 FROM x WHERE i<50) INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM x; } } -body { execsql { UPDATE t1 SET a = randomblob(99) } } -test { faultsim_test_result {0 {}} faultsim_integrity_check db } do_faultsim_test 3 -faults oom* -prep { sqlite3 db "" db eval { PRAGMA page_size = 1024; PRAGMA cache_size = 10; CREATE TABLE t1(a, b); CREATE INDEX i1 ON t1(b, a); WITH x(i) AS (SELECT 1 UNION ALL SELECT i+1 FROM x WHERE i<50) |
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# set testdir [file dirname $argv0] source $testdir/tester.tcl source $testdir/malloc_common.tcl set testprefix tempfault # sqlite3_memdebug_vfs_oom_test 0 do_faultsim_test 1 -faults * -prep { sqlite3 db "" db eval { PRAGMA page_size = 1024; CREATE TABLE t1(a, b); INSERT INTO t1 VALUES(1, 2); INSERT INTO t1 VALUES(3, 4); } ................................................................................ } if {$testrc==0 && $msg != "1 2 3 4 5 6"} { error "data mismatch 2: $msg" } faultsim_integrity_check } do_faultsim_test 2 -faults * -prep { sqlite3 db "" db eval { PRAGMA page_size = 1024; PRAGMA cache_size = 10; CREATE TABLE t1(a, b); CREATE INDEX i1 ON t1(b, a); WITH x(i) AS (SELECT 1 UNION ALL SELECT i+1 FROM x WHERE i<100) INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM x; } } -body { execsql { UPDATE t1 SET a = randomblob(99) } } -test { faultsim_test_result {0 {}} faultsim_integrity_check db } catch { db close } do_faultsim_test 2.1 -faults * -prep { if {[info commands db]==""} { sqlite3 db "" execsql { PRAGMA page_size = 1024; PRAGMA cache_size = 10; CREATE TABLE t1(a, b); CREATE INDEX i1 ON t1(b, a); WITH x(i) AS (SELECT 1 UNION ALL SELECT i+1 FROM x WHERE i<100) INSERT INTO t1 SELECT randomblob(100), randomblob(100) FROM x; } } } -body { execsql { UPDATE t1 SET a = randomblob(99) } } -test { faultsim_test_result {0 {}} faultsim_integrity_check db } do_faultsim_test 3 -faults * -prep { sqlite3 db "" db eval { PRAGMA page_size = 1024; PRAGMA cache_size = 10; CREATE TABLE t1(a, b); CREATE INDEX i1 ON t1(b, a); WITH x(i) AS (SELECT 1 UNION ALL SELECT i+1 FROM x WHERE i<50) |