84 lines
4.0 KiB
YAML
84 lines
4.0 KiB
YAML
---
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features:
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- >
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Improved performance by eliminating an unneeded directory
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structure hash.
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Optimized the common case for hashing filesystem trees, thus
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eliminating a lot of extraneous disk I/O.
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Updated the `hashes.pkl` file format to include timestamp information
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for race detection. Also simplified hashing logic to prevent race
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conditions and optimize for the common case.
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The erasure code reconstructor will now shuffle work jobs across all
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disks instead of going disk-by-disk. This eliminates single-disk I/O
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contention and allows continued scaling as concurrency is increased.
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Erasure code reconstruction handles moving data from handoff nodes
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better. Instead of moving the data to another handoff, it waits
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until it can be moved to a primary node.
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Temporary URLs now support one common form of ISO 8601 timestamps in
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addition to Unix seconds-since-epoch timestamps. The ISO 8601 format
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accepted is '%Y-%m-%dT%H:%M:%SZ'. This makes TempURLs more
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user-friendly to produce and consume.
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Listing containers in accounts with json or xml now includes a
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`last_modified` time. This does not change any on-disk data, but simply
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exposes the value to offer consistency with the object listings on
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containers.
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- I/O priority is now supported on AArch64 architecture.
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upgrade:
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- If you upgrade and roll back, you must delete all `hashes.pkl` files.
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deprecations:
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If using erasure coding with ISA-L in rs_vand mode and 5 or more parity
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fragments, Swift will emit a warning. This is a configuration that is
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known to harm data durability. In a future release, this warning will be
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upgraded to an error unless the policy is marked as deprecated. All data
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in an erasure code storage policy using isa_l_rs_vand with 5 or more
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parity should be migrated as soon as possible. Please see
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https://bugs.launchpad.net/swift/+bug/1639691 for more information.
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The erasure code reconstructor `handoffs_first` option has been
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deprecated in favor of `handoffs_only`. `handoffs_only` is far more
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useful, and just like `handoffs_first` mode in the replicator, it gives
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the operator the option of forcing the consistency engine to focus
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solely on revert (handoff) jobs, thus improving the speed of
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rebalances. The `handoffs_only` behavior is somewhat consistent with
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the replicator's `handoffs_first` option (any error on any handoff in
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the replicator will make it essentially handoff only forever) but the
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`handoff_only` option does what you want and is named correctly in the
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reconstructor.
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The default for `object_post_as_copy` has been changed to False. The
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option is now deprecated and will be removed in a future release. If
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your cluster is still running with post-as-copy enabled, please update
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it to use the "fast-post" method. Future versions of Swift will not
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support post-as-copy, and future features will not be supported under
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post-as-copy. ("Fast-post" is where `object_post_as_copy` is false).
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fixes:
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Fixed a bug where the ring builder would not allow removal of a device
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when min_part_seconds_left was greater than zero.
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PUT subrequests generated from a client-side COPY will now properly log
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the SSC (server-side copy) Swift source field. See
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https://docs.openstack.org/developer/swift/logs.html#swift-source for
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more information.
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Fixed a bug where an SLO download with a range request may have resulted
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in a 5xx series response.
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SLO manifest PUT requests can now be properly validated by sending an
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ETag header of the md5 sum of the concatenated md5 sums of the
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referenced segments.
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- Fixed the stats calculation in the erasure code reconstructor.
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Rings with min_part_hours set to zero will now only move one partition
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replica per rebalance, thus matching behavior when min_part_hours is
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greater than zero.
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other:
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- Various other minor bug fixes and improvements.
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