15 Commits

Author	SHA1	Message	Date
Alex	e935861854	Factor out node request order selection logic & use in manager	2022-07-29 12:25:03 +02:00
Alex	605a630333	Use streaming in block manager	2022-07-29 12:25:02 +02:00
Alex	8e7e680afe	First adaptation to WIP netapp with streaming body	2022-07-29 12:25:02 +02:00
Alex	2f111e6b3d	Performance improvements: ... - reduce contention on mutation_lock by having 256 of them - better lmdb defaults	2022-07-29 12:24:48 +02:00
Alex	1b2e1296eb	Compute hashes on dedicated threads	2022-07-29 12:24:44 +02:00
Alex	4f38cadf6e	Background task manager (#332) ... - [x] New background worker trait - [x] Adapt all current workers to use new API - [x] Command to list currently running workers, and whether they are active, idle, or dead - [x] Error reporting - Optimizations - [x] Merkle updater: several items per iteration - [ ] Use `tokio::task::spawn_blocking` where appropriate so that CPU-intensive tasks don't block other things going on - scrub: - [x] have only one worker with a channel to start/pause/cancel - [x] automatic scrub - [x] ability to view and change tranquility from CLI - [x] persistence of a few info - [ ] Testing Co-authored-by: Alex Auvolat <alex@adnab.me> Reviewed-on: #332 Co-authored-by: Alex <alex@adnab.me> Co-committed-by: Alex <alex@adnab.me>	2022-07-08 13:30:26 +02:00
Alex	b44d3fc796	Abstract database behind generic interface and implement alternative drivers (#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: #322 Co-authored-by: Alex <alex@adnab.me> Co-committed-by: Alex <alex@adnab.me>	2022-06-08 10:01:44 +02:00
Alex	5768bf3622	First implementation of K2V (#293) ... **Specification:** View spec at [this URL](https://git.deuxfleurs.fr/Deuxfleurs/garage/src/branch/k2v/doc/drafts/k2v-spec.md) - [x] Specify the structure of K2V triples - [x] Specify the DVVS format used for causality detection - [x] Specify the K2V index (just a counter of number of values per partition key) - [x] Specify single-item endpoints: ReadItem, InsertItem, DeleteItem - [x] Specify index endpoint: ReadIndex - [x] Specify multi-item endpoints: InsertBatch, ReadBatch, DeleteBatch - [x] Move to JSON objects instead of tuples - [x] Specify endpoints for polling for updates on single values (PollItem) **Implementation:** - [x] Table for K2V items, causal contexts - [x] Indexing mechanism and table for K2V index - [x] Make API handlers a bit more generic - [x] K2V API endpoint - [x] K2V API router - [x] ReadItem - [x] InsertItem - [x] DeleteItem - [x] PollItem - [x] ReadIndex - [x] InsertBatch - [x] ReadBatch - [x] DeleteBatch **Testing:** - [x] Just a simple Python script that does some requests to check visually that things are going right (does not contain parsing of results or assertions on returned values) - [x] Actual tests: - [x] Adapt testing framework - [x] Simple test with InsertItem + ReadItem - [x] Test with several Insert/Read/DeleteItem + ReadIndex - [x] Test all combinations of return formats for ReadItem - [x] Test with ReadBatch, InsertBatch, DeleteBatch - [x] Test with PollItem - [x] Test error codes - [ ] Fix most broken stuff - [x] test PollItem broken randomly - [x] when invalid causality tokens are given, errors should be 4xx not 5xx **Improvements:** - [x] Descending range queries - [x] Specify - [x] Implement - [x] Add test - [x] Batch updates to index counter - [x] Put K2V behind `k2v` feature flag Co-authored-by: Alex Auvolat <alex@adnab.me> Reviewed-on: #293 Co-authored-by: Alex <alex@adnab.me> Co-committed-by: Alex <alex@adnab.me>	2022-05-10 13:16:57 +02:00
Alex	cb5836d53c	Bring maximum exponential backoff time down from 16h to 1h	2022-04-07 11:49:29 +02:00
Alex	913f7754bb	Add blocks in errored state to `garage stats`	2022-03-28 15:47:23 +02:00
Alex	3dc9214172	Add lots of comments on how the resync queue works ... (I don't really want to change/refactor that code though)	2022-03-23 10:25:39 +01:00
Alex	e480aaf338	Make background tranquility a configurable parameter	2022-03-23 10:25:19 +01:00
Alex	8fd6745745	Move block RC code to separate `rc.rs`	2022-03-23 10:25:19 +01:00
Alex	c3982a90b6	Move DataBlock out of manager.rs	2022-03-23 10:25:19 +01:00
Alex	c1d9854d2c	Move block manager to separate module	2022-03-23 10:25:15 +01:00

Renamed from src/model/block.rs (Browse further)