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Overview
Comment: | Call fsync() right after ftruncate() when in journal_mode=TRUNCATE and when synchronous=FULL in order to ensure that transactions are durable across a power loss that happens moments after the commit. Proposed fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1072773. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
3e922208b68563489c7766abb9afb488 |
User & Date: | drh 2014-10-21 21:56:06.890 |
References
2014-10-29
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01:07 | Call fsync() right after ftruncate() when in journal_mode=TRUNCATE and when synchronous=FULL in order to ensure that transactions are durable across a power loss that happens moments after the commit. Proposed fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1072773. This is a cherrypick of [3e922208b68563489]. (check-in: a8f9bd1e89 user: drh tags: branch-3.8.7) | |
2014-10-22
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02:43 | Call fsync() right after ftruncate() when in journal_mode=TRUNCATE and when synchronous=FULL in order to ensure that transactions are durable across a power loss that happens moments after the commit. Proposed fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1072773. This is a cherry-pick of [3e922208b68563] (check-in: 674848070e user: drh tags: branch-3.8.6) | |
Context
2014-10-29
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01:07 | Call fsync() right after ftruncate() when in journal_mode=TRUNCATE and when synchronous=FULL in order to ensure that transactions are durable across a power loss that happens moments after the commit. Proposed fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1072773. This is a cherrypick of [3e922208b68563489]. (check-in: a8f9bd1e89 user: drh tags: branch-3.8.7) | |
2014-10-22
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15:27 | Take steps to avoid misestimating range query costs based on STAT4 data due to the roundoff error of converting from integers to LogEst and back to integers. (check-in: 3c933bf95f user: drh tags: trunk) | |
02:43 | Call fsync() right after ftruncate() when in journal_mode=TRUNCATE and when synchronous=FULL in order to ensure that transactions are durable across a power loss that happens moments after the commit. Proposed fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1072773. This is a cherry-pick of [3e922208b68563] (check-in: 674848070e user: drh tags: branch-3.8.6) | |
2014-10-21
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21:56 | Call fsync() right after ftruncate() when in journal_mode=TRUNCATE and when synchronous=FULL in order to ensure that transactions are durable across a power loss that happens moments after the commit. Proposed fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1072773. (check-in: 3e922208b6 user: drh tags: trunk) | |
18:16 | Further tuning of the cost estimates for skip-scan loops, especially for cases when skip-scan loops are in competition with regular loops. (check-in: a27861c28c user: drh tags: trunk) | |
Changes
Changes to src/pager.c.
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1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 | assert( pPager->journalMode==PAGER_JOURNALMODE_MEMORY ); sqlite3OsClose(pPager->jfd); }else if( pPager->journalMode==PAGER_JOURNALMODE_TRUNCATE ){ if( pPager->journalOff==0 ){ rc = SQLITE_OK; }else{ rc = sqlite3OsTruncate(pPager->jfd, 0); } pPager->journalOff = 0; }else if( pPager->journalMode==PAGER_JOURNALMODE_PERSIST || (pPager->exclusiveMode && pPager->journalMode!=PAGER_JOURNALMODE_WAL) ){ rc = zeroJournalHdr(pPager, hasMaster); pPager->journalOff = 0; | > > > > > > > > | 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 | assert( pPager->journalMode==PAGER_JOURNALMODE_MEMORY ); sqlite3OsClose(pPager->jfd); }else if( pPager->journalMode==PAGER_JOURNALMODE_TRUNCATE ){ if( pPager->journalOff==0 ){ rc = SQLITE_OK; }else{ rc = sqlite3OsTruncate(pPager->jfd, 0); if( rc==SQLITE_OK && pPager->fullSync ){ /* Make sure the new file size is written into the inode right away. ** Otherwise the journal might resurrect following a power loss and ** cause the last transaction to roll back. See ** https://bugzilla.mozilla.org/show_bug.cgi?id=1072773 */ rc = sqlite3OsSync(pPager->jfd, pPager->syncFlags); } } pPager->journalOff = 0; }else if( pPager->journalMode==PAGER_JOURNALMODE_PERSIST || (pPager->exclusiveMode && pPager->journalMode!=PAGER_JOURNALMODE_WAL) ){ rc = zeroJournalHdr(pPager, hasMaster); pPager->journalOff = 0; |
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