JuiceFS v0.15.2 arrived 1 month after v0.14.2, with more than 60+ changes from 8 contributors (@davies, @Sandy4999 , @xiaogaozi, @yuhr123, @Suave, @zzcclp , @tangyoupeng, @chnliyong, @yuhr123), thanks to them.
This release introduced new tool to backup and restore metadata, which can also be used to migrate metadata between different meta engines, check Backup and Restore Metadata for details.
This release also improved the performance significantly for read/write heavy workload by utilizing page cache in kernel.
This release is backward-compatible with previous releases, should be safe to upgrade.
New
- Added command
dumpandloadto backup and restore metadata (#510, #521, #529, #535, #551). - Added an option (
--read-only) to mount as read-only (#520). - Support command auto-completion (#530, #534).
- Run benchmark in parallel (
-p N) (#545). - Support PostgreSQL as meta engine (#542).
- Added an option (
--subdir) to mount a sub-directory (#550). - Support WebDAV as an object store (#573).
- Allow enable writeback cache in kernel by
-o writeback_cache(#576). - Added a option to redirect the logging into a file in background mode (#575).
Changed
- Changed the batch size of LIST request to 1000 (some object storage may fail with 400 for larger limit) (1385587).
- Exclude log4j from Java SDK to avoid potential conflict (#501).
- Exit when unknown option found (d6a39f1).
- Report type of meta engine and storage together with usage (#504).
- Changed the default configuration of Java SDK and S3 gateway to be consistent with
juicefs mount(#517). - Keep page cache in kernel when files opened without changes (#528, #537).
- Change REDIS-URL to META-URL in docs (#552).
Bugfix
- Fixed the memory leak in B2 client (#500).
- Handle BucketAlreadyExists error for all object storage (#561).
- Fixed a bug with SQLite and PostgreSQL engine when high bit of lock owner is 1 (#588)
- Fixed updating stats for MySQL engine (#590).
- Fixed case sensitivity for MySQL engine (#591).
- Fixed potential leak for files overwritten by rename (#594, #495)