Commit graph

24 commits

Author SHA1 Message Date
2183518edc
Spawn all background workers in a separate step 2022-12-14 12:28:07 +01:00
1f7b050b7d
Change a warn! into a debug! 2022-09-20 11:49:48 +02:00
48ffaaadfc
Bump versions to 0.8.0 (compatibility is broken already) 2022-09-06 16:47:56 +02:00
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: Deuxfleurs/garage#322
Co-authored-by: Alex <alex@adnab.me>
Co-committed-by: Alex <alex@adnab.me>
2022-06-08 10:01:44 +02:00
203e8d2c34
Bump version to 0.7 because of incompatible Netapp 2022-03-14 10:54:24 +01:00
8c2fb0c066
Add tracing integration with opentelemetry 2022-03-14 10:52:13 +01:00
1e2cf26373
Implement basic metrics in table 2022-03-14 10:51:17 +01:00
5b1117e582
New model for buckets 2022-01-04 12:45:46 +01:00
c94406f428
Improve how node roles are assigned in Garage
- change the terminology: the network configuration becomes the role
  table, the configuration of a nodes becomes a node's role
- the modification of the role table takes place in two steps: first,
  changes are staged in a CRDT data structure. Then, once the user is
  happy with the changes, they can commit them all at once (or revert
  them).
- update documentation
- fix tests
- implement smarter partition assignation algorithm

This patch breaks the format of the network configuration: when
migrating, the cluster will be in a state where no roles are assigned.
All roles must be re-assigned and commited at once. This migration
should not pose an issue.
2021-11-16 16:05:53 +01:00
4067797d01
First port of Garage to Netapp 2021-10-22 15:55:18 +02:00
b9127dd6f8
Prepare for v0.3.0 and add migration path from v0.2.1.x 2021-05-28 15:29:58 +02:00
f859d15062 update to v0.2.1 2021-03-19 13:39:18 +01:00
4c26a0b9c1 Update Cargo.toml files with AGPL license info 2021-03-18 21:59:17 +01:00
dead945c8f Prepare for release 0.2 2021-03-18 19:33:15 +01:00
f4346cc5f4 Update dependencies 2021-03-16 15:58:40 +01:00
0cd5b2ae19 WIP migrate to tokio 1 2021-03-15 22:36:41 +01:00
94f3d28774 WIP big refactoring 2021-03-11 16:54:15 +01:00
20e6e9fa20 Update sled & try to debug deadlock (but its in sled...) 2021-02-23 21:27:28 +01:00
1d1d497e2b Bump everything to 0.1.1 2021-01-15 17:54:48 +01:00
a8b3c8fd58 data hexdump in warning 2020-11-20 23:53:54 +01:00
86bf4dedac Add support for model migrations 2020-07-08 16:10:53 +02:00
3b0b11085e Add versions to dependencies 2020-07-07 14:18:47 +02:00
cc65cdc0fe Add license, description and repository to .toml files 2020-07-07 14:14:58 +02:00
d8f5e643bc Split code for modular compilation 2020-04-24 10:10:01 +00:00