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ITS#8704 add MDB_PREVSNAPSHOT flag to mdb_env_open

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used to open the previous snapshot, in case the latest one
is corrupted
This commit is contained in:
Howard Chu
2017-08-12 12:21:25 +01:00
parent 86226754a9
commit 9c6eb75c65
8 changed files with 68 additions and 15 deletions
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6
external/db_drivers/liblmdb/mdb_dump.c vendored
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@@ -164,7 +164,7 @@ static int dumpit(MDB_txn *txn, MDB_dbi dbi, char *name)
static void usage(char *prog)
{
fprintf(stderr, "usage: %s [-V] [-f output] [-l] [-n] [-p] [-a|-s subdb] dbpath\n", prog);
fprintf(stderr, "usage: %s [-V] [-f output] [-l] [-n] [-p] [-v] [-a|-s subdb] dbpath\n", prog);
exit(EXIT_FAILURE);
}
@@ -188,6 +188,7 @@ int main(int argc, char *argv[])
* -n: use NOSUBDIR flag on env_open
* -p: use printable characters
* -f: write to file instead of stdout
* -v: use previous snapshot
* -V: print version and exit
* (default) dump only the main DB
*/
@@ -215,6 +216,9 @@ int main(int argc, char *argv[])
case 'n':
envflags |= MDB_NOSUBDIR;
break;
case 'v':
envflags |= MDB_PREVSNAPSHOT;
break;
case 'p':
mode |= PRINT;
break;