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Type:
Task
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Resolution: Done
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Priority:
Major - P3
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Affects Version/s: None
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Labels:None
https://docs.mongodb.org/manual/reference/program/mongorestore/#cmdoption--db
Specifies a database for mongorestore to restore data into. If the database does not exist, mongorestore creates the database. If you do not specify a <db>, mongorestore creates new databases that correspond to the databases where data originated and data may be overwritten. Use this option to restore data into a MongoDB instance that already has data.
--db does not control which BSON files mongorestore restores. You must use the mongorestore path option to limit that restored data.
However, as noted at https://docs.mongodb.org/manual/reference/program/mongorestore/#restore-a-database-from-an-archive-file
--db is used to select which database is restored from the archive.
If --db or --collection specifies a database or collection not contained in the dump archive no data will be restored:
mongodump --archive=test.archive --db test --collection foo
2016-04-04T16:44:44.555-0400 writing test.foo to archive 'test.archive'
2016-04-04T16:44:44.555-0400 done dumping test.foo (1 document)
mongorestore --archive=test.archive --db test --collection bar
2016-04-04T16:44:50.917-0400 setting number of parallel collections to number of parallel collections in archive (8)
2016-04-04T16:44:50.942-0400 creating intents for archive
2016-04-04T16:44:50.986-0400 done
mongorestore --archive=test.archive --db test --collection foo
2016-04-04T16:44:56.531-0400 setting number of parallel collections to number of parallel collections in archive (8)
2016-04-04T16:44:56.556-0400 creating intents for archive
2016-04-04T16:44:56.619-0400 reading metadata for test.foo from archive 'test.archive'
2016-04-04T16:44:56.619-0400 restoring test.foo from archive 'test.archive'
2016-04-04T16:44:56.626-0400 error: E11000 duplicate key error collection: test.foo index: _id_ dup key: { : ObjectId('5702d13cd25b3ef5b9fe55b3') }
2016-04-04T16:44:56.928-0400 restoring indexes for collection test.foo from metadata
2016-04-04T16:44:56.928-0400 finished restoring test.foo (1 document)
2016-04-04T16:44:56.928-0400 done
I think this distinction should be highlighted as part of the description of the --db option quoted above.
- is related to
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SERVER-23488 mongorestore --db with --archive selects which database to restore
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- Closed
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- related to
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- Closed
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