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path: root/src/db/lib.rs
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* Merge branch 'main' into next-0.10Alex Auvolat2024-03-181-0/+12
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| * [db-snapshot] Implement db snapshotting logic in garage_dbAlex Auvolat2024-03-151-0/+12
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* | [rm-sled] Implement iterators in sqlite & lmdb transactionsAlex Auvolat2024-03-081-0/+1
| | | | | | | | with way too much unsafe code
* | [rm-sled] Implement some missing functionality in garage_dbAlex Auvolat2024-03-081-0/+6
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* | [rm-sled] Remove counted_tree_hackAlex Auvolat2024-03-081-9/+0
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* | [rm-sled] Remove the Sled database engineAlex Auvolat2024-03-081-2/+0
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* [factor-db-open] Combine logic for opening db enginesfactor-db-openAlex Auvolat2024-03-081-43/+4
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* make all garage_db::Engine variants un-conditionalZdenek Crha2024-01-221-21/+16
| | | | | | | | | | | Having all Engine enum variants conditional causes compilation errors when *none* of the DB engine features is enabled. This is not an issue for full garage build, but affects crates that use garage_db as dependency. Change all variants to be present at all times. It solves compilation errors and also allows us to better differentiate between invalid DB engine name and engine with support not compiled in current binary.
* convert_db: prevent conversion between same input/output engineZdenek Crha2024-01-181-0/+47
| | | | | | | | | | | | | | | | Use optional DB open overrides for both input and output database. Duplicating the same override flag for input/output would result in too many, too long flags. It would be too costly for very rare edge-case where converting between same DB engine, just with different flags. Because overrides flags for different engines are disjoint and we are preventing conversion between same input/ouput DB engine, we can have only one set. The override flag will be passed either to input or output, based on engine type it belongs to. It will never be passed to both of them and cause unwelcome surprise to user.
* garage_db: refactor transactions and add on_commit mechanismAlex Auvolat2023-09-211-35/+40
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* Merge branch 'main' into nextAlex Auvolat2023-01-041-0/+7
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| * cli: prettier table in garage statsAlex Auvolat2022-12-131-0/+7
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* | Return more info when layout's .check() fails, fix compilation, fix testAlex Auvolat2022-11-081-2/+0
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* | cargo fmtMendes2022-10-101-1/+0
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* | Tests written in layout.rsMendes2022-10-101-1/+1
|/ | | | | added staged_parameters to ClusterLayout removed the serde(default) -> will need a migration function
* Add warnings when features are not included in buildAlex Auvolat2022-09-071-0/+3
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* Make all DB engines optional build featuresAlex Auvolat2022-09-061-0/+4
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* Uniformize tracing::* imports (hopefully fixes 32-bit build)fix-32bit-buildAlex Auvolat2022-07-151-0/+3
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* improve internal item counter mechanisms and implement bucket quotas (#326)Alex2022-06-151-0/+6
| | | | | | | | | | | | | | | | - [x] Refactoring of internal counting API - [x] Repair procedure for counters (it's an offline procedure!!!) - [x] New counter for objects in buckets - [x] Add quotas to buckets struct - [x] Add CLI to manage bucket quotas - [x] Add admin API to manage bucket quotas - [x] Apply quotas by adding checks on put operations - [x] Proof-read Co-authored-by: Alex Auvolat <alex@adnab.me> Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/326 Co-authored-by: Alex <alex@adnab.me> Co-committed-by: Alex <alex@adnab.me>
* Abstract database behind generic interface and implement alternative drivers ↵Alex2022-06-081-0/+400
(#322) - [x] Design interface - [x] Implement Sled backend - [x] Re-implement the SledCountedTree hack ~~on Sled backend~~ on all backends (i.e. over the abstraction) - [x] Convert Garage code to use generic interface - [x] Proof-read converted Garage code - [ ] Test everything well - [x] Implement sqlite backend - [x] Implement LMDB backend - [ ] (Implement Persy backend?) - [ ] (Implement other backends? (like RocksDB, ...)) - [x] Implement backend choice in config file and garage server module - [x] Add CLI for converting between DB formats - Exploit the new interface to put more things in transactions - [x] `.updated()` trigger on Garage tables Fix #284 **Bugs** - [x] When exporting sqlite, trees iterate empty?? - [x] LMDB doesn't work **Known issues for various back-ends** - Sled: - Eats all my RAM and also all my disk space - `.len()` has to traverse the whole table - Is actually quite slow on some operations - And is actually pretty bad code... - Sqlite: - Requires a lock to be taken on all operations. The lock is also taken when iterating on a table with `.iter()`, and the lock isn't released until the iterator is dropped. This means that we must be VERY carefull to not do anything else inside a `.iter()` loop or else we will have a deadlock! Most such cases have been eliminated from the Garage codebase, but there might still be some that remain. If your Garage-over-Sqlite seems to hang/freeze, this is the reason. - (adapter uses a bunch of unsafe code) - Heed (LMDB): - Not suited for 32-bit machines as it has to map the whole DB in memory. - (adpater uses a tiny bit of unsafe code) **My recommendation:** avoid 32-bit machines and use LMDB as much as possible. **Converting databases** is actually quite easy. For example from Sled to LMDB: ```bash cd src/db cargo run --features cli --bin convert -- -i path/to/garage/meta/db -a sled -o path/to/garage/meta/db.lmdb -b lmdb ``` Then, just add this to your `config.toml`: ```toml db_engine = "lmdb" ``` Co-authored-by: Alex Auvolat <alex@adnab.me> Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/322 Co-authored-by: Alex <alex@adnab.me> Co-committed-by: Alex <alex@adnab.me>
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