blob: 4fdeba8bcd48ee905574fc228bc3aaa59cca4c67 (plain
Improvements in key parts of the consistency engine
- Optimized the common case for hashing filesystem trees, thus
eliminating a lot of extraneous disk I/O.
- Updated the `hashes.pkl` file format to include timestamp information
for race detection. Also simplified hashing logic to prevent race
conditions and optimize for the common case.
Upgrade Impact: If you upgrade and roll back, you must delete all
If using erasure coding with ISA-L in rs_vand mode and 5 or more parity
fragments, Swift will emit a warning. This is a configuration that is
known to harm data durability. In a future release, this warning will be
upgraded to an error unless the policy is marked as deprecated. All data
in an erasure code storage policy using isa_l_rs_vand with 5 or more
parity should be migrated as soon as possible. Please see
https://bugs.launchpad.net/swift/+bug/1639691 for more information.
Fixed a bug where the ring builder would not allow removal of a device
when min_part_seconds_left was greater than zero.
PUT subrequests generated from a client-side COPY will now properly log
the SSC (server-side copy) Swift source field. See
Rings with min_part_hours set to zero will now only move one partition
replica per rebalance, thus matching behavior when min_part_hours is
greater than zero.
Correctly send 412 Precondition Failed if a user sends an
invalid copy destination. Previously Swift would send a 500
Internal Server Error.
Fixed error where a container drive error resulted in double space
usage on rest drives. When drive with container or account database
is unmounted, the bug would create handoff replicas on all remaining
drives, increasing the drive space used and filling the cluster.
Account and container databases will now be quarantined if the
database schema has been corrupted.
Ensure update of the container by object-updater, removing a rare
possibility that objects would never be added to a container listing.
- Fixed some minor test compatibility issues.
- Updated docs to reference appropriate ports.