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Overview
| Comment: | Enhance the scrub utility program so that it does a FULL checkpoint prior to starting the backup, to ensure that the database file content matches what needs to be backed up without having to look at the WAL file. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | scrub-backup |
| Files: | files | file ages | folders |
| SHA1: |
ab1c5ce50f139070d7a322f43132a93c |
| User & Date: | drh 2016-05-17 21:17:51 |
Context
|
2016-05-18
| ||
| 21:03 | Add the "scrub" utility program that simultaneously backs-up a live database and erases all deleted content. check-in: c981ab2a user: drh tags: trunk | |
|
2016-05-17
| ||
| 21:17 | Enhance the scrub utility program so that it does a FULL checkpoint prior to starting the backup, to ensure that the database file content matches what needs to be backed up without having to look at the WAL file. Closed-Leaf check-in: ab1c5ce5 user: drh tags: scrub-backup | |
| 17:11 | Merge the latest changes from trunk. check-in: 5021dfe1 user: drh tags: scrub-backup | |
Changes
Changes to ext/misc/scrub.c.
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 |
SQLITE_OPEN_READWRITE |
SQLITE_OPEN_URI | SQLITE_OPEN_PRIVATECACHE, 0);
if( p->rcErr ){
scrubBackupErr(p, "cannot open source database: %s",
sqlite3_errmsg(p->dbSrc));
return;
}
p->rcErr = sqlite3_exec(p->dbSrc, "BEGIN", 0, 0, 0);
if( p->rcErr ){
scrubBackupErr(p,
"cannot start a read transaction on the source database: %s",
sqlite3_errmsg(p->dbSrc));
return;
}
pStmt = scrubBackupPrepare(p, p->dbSrc, "PRAGMA page_size");
if( pStmt==0 ) return;
rc = sqlite3_step(pStmt);
if( rc==SQLITE_ROW ){
p->szPage = sqlite3_column_int(pStmt, 0);
}else{
|
| > > > > > > > |
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 |
SQLITE_OPEN_READWRITE |
SQLITE_OPEN_URI | SQLITE_OPEN_PRIVATECACHE, 0);
if( p->rcErr ){
scrubBackupErr(p, "cannot open source database: %s",
sqlite3_errmsg(p->dbSrc));
return;
}
p->rcErr = sqlite3_exec(p->dbSrc, "SELECT 1 FROM sqlite_master; BEGIN;",
0, 0, 0);
if( p->rcErr ){
scrubBackupErr(p,
"cannot start a read transaction on the source database: %s",
sqlite3_errmsg(p->dbSrc));
return;
}
rc = sqlite3_wal_checkpoint_v2(p->dbSrc, "main", SQLITE_CHECKPOINT_FULL,
0, 0);
if( rc ){
scrubBackupErr(p, "cannot checkpoint the source database");
return;
}
pStmt = scrubBackupPrepare(p, p->dbSrc, "PRAGMA page_size");
if( pStmt==0 ) return;
rc = sqlite3_step(pStmt);
if( rc==SQLITE_ROW ){
p->szPage = sqlite3_column_int(pStmt, 0);
}else{
|