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When updating a zipvfs database with RBU, set journal_mode=off to prevent the upper-level pager from creating a large temporary file.

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FossilOrigin-Name: dec14a3980dcf6c61b0b9ac4ba82fa963ac346d4
This commit is contained in:
dan
2015-08-19 08:34:34 +00:00
parent c1e63be360
commit 5ef2b281aa
3 changed files with 20 additions and 9 deletions
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ext/rbu/sqlite3rbu.c
+13 -2
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@@ -3043,14 +3043,25 @@ sqlite3rbu *sqlite3rbu_open(
if( p->rc==SQLITE_OK ){
if( p->eStage==RBU_STAGE_OAL ){
sqlite3 *db = p->dbMain;
/* Open transactions both databases. The *-oal file is opened or
** created at this point. */
p->rc = sqlite3_exec(p->dbMain, "BEGIN IMMEDIATE", 0, 0, &p->zErrmsg);
p->rc = sqlite3_exec(db, "BEGIN IMMEDIATE", 0, 0, &p->zErrmsg);
if( p->rc==SQLITE_OK ){
p->rc = sqlite3_exec(p->dbRbu, "BEGIN IMMEDIATE", 0, 0, &p->zErrmsg);
}
/* Check if the main database is a zipvfs db. If it is, set the upper
** level pager to use "journal_mode=off". This prevents it from
** generating a large journal using a temp file. */
if( p->rc==SQLITE_OK ){
int frc = sqlite3_file_control(db, "main", SQLITE_FCNTL_ZIPVFS, 0);
if( frc==SQLITE_OK ){
p->rc = sqlite3_exec(db, "PRAGMA journal_mode=off",0,0,&p->zErrmsg);
}
}
/* Point the object iterator at the first object */
if( p->rc==SQLITE_OK ){
p->rc = rbuObjIterFirst(p, &p->objiter);