Metadata Service Release Notes

JuiceFS 5.3.5 (2026/3/19)

Added statistics for sustained file count and size in pyjfs interfaces
Support virtual connections to reduce the number of connections to the metadata service
Support verifying LICENSE validity directly from the command line
Write the debug proxy port to a specific file
Optimized performance of list sessions
Skip sticky bit permission check for virtual subdirectories when deleting snapshots
Fixed a potential EBADF error on exit
Fixed repeated log downloads when encountering empty or corrupted transaction logs
Fixed an issue that the first message on a newly established connection might be dropped
captool: Fixed multiple message parsing errors
Multi-partition
- No longer print error logs when a sub-partition does not have an exports file

Fixed FIFO file type character error in console API (q changed to p)
Added the ability to set volume names in pyjfs
Support loading virtual subdirectories from snapshot files
Increased the threshold for triggering transaction log cleanup
Back up unused transaction logs
Optimized transaction log scanning and sync process to reduce unnecessary log entries
Fixed inode reuse delay issue
Fixed truncation of compressed transaction logs
Fixed a potential panic when parsing inode ranges during log replay
Fixed log download failures in metalogger
Fixed naming and metadata rotation issues for compressed transaction log files in metalogger
captool: Adapted to recent protocol changes
Multi-partition
- Record OID in readdir cache after rename
- Return OID in rename requests
- Ensure OID is valid
- Prefer primary partition quota when paths are in the same partition
- Prefer migrating empty directories back to the source partition during cross-partition directory rename
- Also update atime when accessing moved inodes in mirror scenarios
- Fixed returning extra empty paths in the heatmap command