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CHANGELOG
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swift (2.28.0)
* Sharding improvements:
* When building a listing from shards, any failure to retrieve
listings will result in a 503 response. Previously, failures
fetching a partiucular shard would result in a gap in listings.
* Container-server logs now include the shard path in the referer
field when receiving stat updates.
* Added a new config option, `rows_per_shard`, to specify how many
objects should be in each shard when scanning for ranges. The default
is `shard_container_threshold / 2`, preserving existing behavior.
* Added a new config option, `minimum_shard_size`. When scanning
for shard ranges, if the final shard would otherwise contain
fewer than this many objects, the previous shard will instead
be expanded to the end of the namespace (and so may contain up
to `rows_per_shard + minimum_shard_size` objects). This reduces
the number of small shards generated. The default value is
`rows_per_shard / 5`.
* Added a new config option, `shrink_threshold`, to specify the
absolute size below which a shard will be considered for shrinking.
This overrides the `shard_shrink_point` configuration option, which
expressed this as a percentage of `shard_container_threshold`.
`shard_shrink_point` is now deprecated.
* Similar to above, `expansion_limit` was added as an absolute-size
replacement for the now-deprecated `shard_shrink_merge_point`
configuration option.
* The sharder now correctly identifies and fails audits for shard
ranges that overlap exactly.
* The sharder and swift-manage-shard-ranges now consider total row
count (instead of just object count) when deciding whether a shard
is a candidate for shrinking.
* If the sharder encounters shard range gaps while cleaving, it will
now log an error and halt sharding progress. Previously, rows may
not have been moved properly, leading to data loss.
* Sharding cycle time and last-completion time are now available via
swift-recon.
* Fixed an issue where resolving overlapping shard ranges via shrinking
could prematurely mark created or cleaved shards as active.
* `swift-manage-shard-ranges` improvements:
* Exit codes are now applied more consistently:
- 0 for success
- 1 for an unexpected outcome
- 2 for invalid options
- 3 for user exit
As a result, some errors that previously resulted in exit code 2
will now exit with code 1.
* Added a new 'repair' command to automatically identify and
optionally resolve overlapping shard ranges.
* Added a new 'analyze' command to automatically identify overlapping
shard ranges and recommend a resolution based on a JSON listing
of shard ranges such as produced by the 'show' command.
* Added a `--includes` option for the 'show' command to only output
shard ranges that may include a given object name.
* Added a `--dry-run` option for the 'compact' command.
* The 'compact' command now outputs the total number of compactible
sequences.
* S3 API improvements:
* Added an option, `ratelimit_as_client_error`, to return 429s for
rate-limited responses. Several clients/SDKs have seem to support
retries with backoffs on 429, and having it as a client error
cleans up logging and metrics. By default, Swift will respond 503,
matching AWS documentation.
* Fixed a server error in bucket listings when `s3_acl` is enabled
and staticweb is configured for the container.
* Fixed a server error when a client exceeds `client_timeout` during an
upload. Now, a `RequestTimeout` error is correctly returned.
* Fixed a server error when downloading multipart uploads/static large
objects that have missing or inaccessible segments. This is a state
that cannot arise in AWS, so a new `BrokenMPU` error is returned,
indicating that retrying the request is unlikely to succeed.
* Fixed several issues with the prefix, marker, and delimiter
parameters that would be mirrored back to clients when listing
buckets.
* Partition power increase improvements:
* The relinker now spawns multiple subprocesses to process disks
in parallel. By default, one worker is spawned per disk; use the
new `--workers` option to control how many subprocesses are used.
Use `--workers=0` to maintain the previous behavior.
* The relinker now performs eventlet-hub selection the same way as
other daemons. In particular, `epolls` will no longer be selected,
as it seemed to cause occassional hangs.
* The relinker can now target specific storage policies or
partitions by using the new `--policy` and `--partition`
options.
* Partitions that encountered errors during relinking are no longer
marked as completed in the relinker state file. This ensures that
a subsequent relink will retry the failed partitions.
* Partition cleanup is more robust, decreasing the likelihood of
leaving behind mostly-empty partitions from the old partition
power.
* Improved relinker progress logging, and started collecting
progress information for swift-recon.
* Cleanup is more robust to files and directories being deleted by
another process.
* The relinker better handles data found from earlier partition power
increases.
* The relinker better handles tombstones found for the same object
but with different inodes.
* The reconciler now defers working on policies that have a partition
power increase in progress to avoid issues with concurrent writes.
* Erasure coding fixes:
* Added the ability to quarantine EC fragments that have no (or few)
other fragments in the cluster. A new configuration option,
`quarantine_threshold`, in the reconstructor controls the point at
the fragment will be quarantined; the default (0) will never
quarantine. Only fragments older than `quarantine_age` (default:
`reclaim_age`) may be quarantined. Before quarantining, the
reconstructor will attempt to fetch fragments from handoff nodes
in addition to the usual primary nodes; a new `request_node_count`
option (default `2 * replicas`) limits the total number of nodes to
contact.
* Added a delay before deleting non-durable data. A new configuration
option, `commit_window` in the `[DEFAULT]` section of
object-server.conf, adjusts this delay; the default is 60 seconds. This
improves the durability of both back-dated PUTs (from the reconciler or
container-sync, for example) and fresh writes to handoffs by preventing
the reconstructor from deleting data that the object-server was still
writing.
* Improved proxy-server and object-reconstructor logging when data
cannot be reconstructed.
* Fixed an issue where some but not all fragments having metadata
applied could prevent reconstruction of missing fragments.
* Server-side copying of erasure-coded data to a replicated policy no
longer copies EC sysmeta. The previous behavior had no material
effect, but could confuse operators examining data on disk.
* Python 3 fixes:
* Fixed a server error when performing a PUT authorized via
tempurl with some proxy pipelines.
* Fixed a server error during GET of a symlink with some proxy
pipelines.
* Fixed an issue with logging setup when /dev/log doesn't exist
or is not a UNIX socket.
* The container-reconciler now scales out better with new `processes`,
`process`, and `concurrency` options, similar to the object-expirer.
* The dark-data audit watcher now skips objects younger than a new
configurable `grace_age` period. This avoids issues where data
could be flagged, quarantined, or deleted because of listing
consistency issues. The default is one week.
* The dark-data audit watcher now requires that all primary locations
for an object's container agree that the data does not appear in
listings to consider data "dark". Previously, a network partition
that left an object node isolated could cause it to quarantine or
delete all of its data.
* More daemons now support systemd notify sockets.
* `EPIPE` errors no longer log tracebacks.
* The account and container auditors now log and update recon before
going to sleep.
* The object-expirer logs fewer client disconnects.
* `swift-recon-cron` now includes the last time it was run in the recon
information.
* `EIO` errors during read now cause object diskfiles to be quarantined.
* The formpost middleware now properly supports uploading multiple files
with different content-types.
* Various other minor bug fixes and improvements.
swift (2.27.0, OpenStack Wallaby)
* Added "audit watcher" hooks to allow operators to run arbitrary code
against every diskfile in a cluster. For more information, see
https://docs.openstack.org/swift/latest/development_watchers.html
* Added support for system-scoped "reader" roles when authenticating using
Keystone. Operators may configure this using the `system_reader_roles`
option in the `[filter:keystoneauth]` section of their proxy-server.conf.
A comparable group, `.reseller_reader`, is now available for development
purposes when authenticating using tempauth.
* Allow static large object segments to be deleted asynchronously.
Operators may opt into this new behavior by enabling the new
`allow_async_delete` option in the `[filter:slo]` section
in their proxy-server.conf. For more information, see
https://docs.openstack.org/swift/latest/overview_large_objects.html#deleting-a-large-object
* Added the ability to connect to memcached over TLS. See the
`tls_*` options in etc/memcache.conf-sample
* The proxy-server now caches 'listing' shards, improving listing
performance for sharded containers. A new config option,
`recheck_listing_shard_ranges`, controls the cache time and defaults to
10 minutes; set it to 0 to disable caching (the previous behavior).
* Added a new optional proxy-logging field `{wire_status_int}` for the
status code returned to the client. For more information, see
https://docs.openstack.org/swift/latest/logs.html#proxy-logs
* Errors downloading a Static Large Object that cause a shorter-than-expected
response are now logged as 500s.
* Memcache client error-limiting is now configurable. See the
`error_suppression_*` options in etc/memcache.conf-sample
* Added `tasks_per_second` option to rate-limit the object-expirer.
* Added `usedforsecurity` annotations for use on FIPS-compliant systems.
* Added an option to write EC fragments with legacy CRC to ensure a smooth
upgrade from liberasurecode<=1.5.0 to >=1.6.2. For more information, see
https://bugs.launchpad.net/liberasurecode/+bug/1886088
* **Known Issue**: Operators should verify that encryption is not enabled
in their reconciler pipelines; having it enabled there may harm data
durability. For more information, see https://launchpad.net/bugs/1910804
* S3 API improvements:
* Fixed a bug that prevented the s3api pipeline validation described in
proxy-server.conf-sample from being performed. As documented, operators
can disable this via the `auth_pipeline_check` option if proxy startup
fails with validation errors.
* Make allowable clock skew configurable, with a default value of
15 minutes to match AWS. Note that this was previously hardcoded at
5 minutes; operators may want to preserve the prior behavior by setting
`allowable_clock_skew = 300` in the `[filter:s3api]` section of their
proxy-server.conf.
* Fixed an issue where SHA mismatches in client XML payloads would cause
a server error. Swift now correctly responds with a client error about
the bad digest.
* Fixed an issue where non-base64 signatures would cause a server error.
Swift now correctly responds with a client error about the invalid
digest.
* Container ACLs are now cloned to the `+segments` container when it is
created.
* The correct storage policy is now logged for S3 requests.
* Added the ability to configure auth region in s3token middleware.
* CORS-related headers are now passed through appropriately when using
the S3 API. Note that allowed origins and other container metadata
must still be configured through the Swift API as documented at
https://docs.openstack.org/swift/latest/cors.html
Preflight requests do not contain enough information to map a
bucket to an account/container pair; a new cluster-wide option
`cors_preflight_allow_origin` may be configured for such OPTIONS
requests. The default (blank) rejects all S3 preflight requests.
* Sharding improvements:
* Prevent shard databases from losing track of their root database when
deleted.
* Prevent sharded root databases from being reclaimed to ensure that
shards can detect that they have been deleted.
* A `--no-auto-shard` option has been added to `swift-container-sharder`.
* The sharder daemon has been enhanced to better support the shrinking
of shards that are no longer required. Shard containers will now
discover from their root container if they should be shrinking. They
will also discover the shards into which they should shrink, which may
include the root container itself.
* A 'compact' command has been added to `swift-manage-shard-ranges` that
enables sequences of contiguous shards with low object counts to be
compacted into another existing shard, or into the root container.
* `swift-manage-shard-ranges` can now accept a config file; this
may be used to ensure consistency of threshold values with the
container-sharder config.
* Overlapping shrinking shards no longer generate audit warnings; these
are expected to sometimes overlap.
* The sharding progress reports in recon cache now continue to be included
for a period of time after sharding has completed. The time period
may be configured using the `recon_sharded_timeout` option in the
`[container-sharder]` section of container-server.conf, and defaults
to 12 hours.
* Add root containers with compactible ranges to recon cache.
* Expose sharding statistics in the backend recon middleware.
* Replication improvements:
* Fixed a race condition in ssync that could lead to a loss of data
durability (or even loss of data, for two-replica policies) when some
object servers have outdated rings. Replication via rsync is likely
still affected by a similar bug.
* Non-durable fragments can now be reverted from handoffs.
* The post-rsync REPLICATE call no longer recalculates hashes immediately.
* Hashes are no longer invalidated after a successful ssync; they were
already invalidated during the data transfer.
* Reduced log noise for common ssync errors.
* Python 3 fixes:
* Added support for Python 3.9.
* Staticweb correctly handles listings when paths include non-ASCII
characters.
* S3 API now allows multipart uploads with non-ASCII characters in the
object name.
* Fixed an import-ordering issue in `swift-dispersion-populate`.
* Partition power increase improvements:
* Fixed a bug where stale state files would cause misplaced data during
multiple partition power increases.
* Removed a race condition that could cause newly-written data to not be
linked into the new partition for the new partition power.
* Improved safety during cleanup to ensure files have been relinked
appropriately before unlinking.
* Added an option to drop privileges when running the relinker as root.
* Added an option to rate-limit how quickly data files are relinked or
cleaned up. This may be used to reduce I/O load during partition power
increases, improving end-user performance.
* Rehash partitions during the partition power increase. Previously, we
relied on the replication engine to perform the rehash, which could
cause an unexpected I/O spike after a partition power increase.
* Warn when relinking/cleaning up and any disks are unmounted.
* Log progress per partition when relinking/cleaning up.
* During clean-up, stop warning about tombstones that got reaped from
the new location but not the old.
* Added the ability to read options from object-server.conf, similar to
background daemons.
* Turned off thread-logging when monkey-patching with eventlet. This
addresses a potential hang in the proxy-server while logging client
disconnects.
* Fixed a bug that could cause EC GET responses to return a server error.
* Fixed an issue with `swift-drive-audit` when run around New Year's.
* Server errors encountered when validating the first segment of a Static or
Dynamic Large Object now return a 503 to the client, rather than a 409.
* Errors when setting keys in memcached are now logged. This helps
operators detect when shard ranges for caching have gotten too large to
be stored, for example.
* Various other minor bug fixes and improvements.
swift (2.26.0, OpenStack Victoria)
* Extend concurrent reads to erasure coded policies. Previously, the
options `concurrent_gets` and `concurrency_timeout` only applied to
replicated policies.
* Add a new `concurrent_ec_extra_requests` option to allow the proxy to
make some extra backend requests immediately. The proxy will respond as
soon as there are enough responses available to reconstruct.
* The concurrent read options (`concurrent_gets`, `concurrency_timeout`,
and `concurrent_ec_extra_requests`) may now be configured per
storage-policy.
* Replication servers can now handle all request methods. This allows
ssync to work with a separate replication network.
* All background daemons now use the replication network. This allows
better isolation between external, client-facing traffic and internal,
background traffic. Note that during a rolling upgrade, replication
servers may respond with `405 Method Not Allowed`. To avoid this,
operators should remove the config option `replication_server = true`
from their replication servers; this will allow them to handle all
request methods before upgrading.
* S3 API improvements:
* Fixed some SignatureDoesNotMatch errors when using the AWS .NET SDK.
* Add basic read support for object tagging. This improves
compatibility with AWS CLI version 2. Write support is not
yet implemented, so the tag set will always be empty.
* CompleteMultipartUpload requests may now be safely retried.
* Improved quota-exceeded error messages.
* Improved logging and statsd metrics. Be aware that this will cause
an increase in the proxy-logging statsd metrics emited for S3
responses. However, this should more accurately reflect the state
of the system.
* S3 requests are now less demanding on the container layer.
* Python 3 bug fixes:
* Fixed an error when reading encrypted data that was written while
running Python 2 for a path that includes non-ASCII characters. This
was caused by a difference in string types that resulted in
ambiguity when decrypting. To prevent the ambiguity for new data, set
`meta_version_to_write = 3` in your keymaster configuration after
upgrading all proxy servers.
If upgrading from Swift 2.20.0 or Swift 2.19.1 or earlier, set
`meta_version_to_write = 1` in your keymaster configuration prior
to upgrading.
* Object expiration respects the `expiring_objects_container_divisor`
config option.
* `fallocate_reserve` may be specified as a percentage in more places.
* The ETag-quoting middleware no longer raises TypeErrors.
* Sharding improvements:
* Prevent object updates from auto-creating shard containers. This
ensures more consistent listings for sharded containers during
rebalances.
* Deleted shard containers are no longer considered root containers.
This prevents unnecessary sharding audit failures and allows the
deleted shard database to actually be unlinked.
* `swift-container-info` now summarizes shard range information.
Pass `-v`/`--verbose` if you want to see all of them.
* Improved container-sharder stat reporting to reduce load on root
container databases.
* Don't inject shard ranges when user quits.
* Servers now open one listen socket per worker, ensuring each worker
serves roughly the same number of concurrent connections.
* Server workers may now be gracefully terminated via `SIGHUP` or
`SIGUSR1`. The parent process will then spawn a fresh worker.
* During rebalances, clients should no longer get 404s for data that
exists but whose replicas are overloaded.
* Improved cache management for account and container responses.
* Allow proxy-logging middlewares to be configured more independently.
* Allow operators to pass either raw or URL-quoted paths to
swift-get-nodes. Notably, this allows swift-get-nodes to work with
the reserved namespace used for object versioning.
* Container read ACLs now work with object versioning. This only
allows access to the most-recent version via an unversioned URL.
* Improved how containers reclaim deleted rows to reduce locking and object
update throughput.
* Large object reads log fewer client disconnects.
* Allow ratelimit to be placed multiple times in a proxy pipeline,
such as both before s3api and auth (to handle swift requests without
needing to make an auth decision) and after (to limit S3 requests).
* Shuffle object-updater work. This somewhat reduces the impact a
single overloaded database has on other containers' listings.
* Fix a proxy-server error when retrieving erasure coded data when
there are durable fragments but not enough to reconstruct.
* Fix an error in the proxy server when finalizing data.
* Improve performance when increasing partition power.
* Various other minor bug fixes and improvements.
swift (2.25.0, OpenStack Ussuri)
* WSGI server processes can now notify systemd when they are ready.
* Added `ttfb` (Time to First Byte) and `pid` (Process ID) to the set
of available proxy-server log fields. For more information, see
https://docs.openstack.org/swift/latest/logs.html
* Improved proxy-server performance by reducing unnecessary locking,
memory copies, and eventlet scheduling.
* Reduced object-replicator and object-reconstructor CPU usage by only
checking that the device list is current when rings change.
* Improved performance of sharded container listings when performing
prefix listings.
* Improved container-sync performance when data has already been
deleted or overwritten.
* Account quotas are now enforced even on empty accounts.
* Getting an SLO manifest with `?format=raw` now responds with an ETag
that matches the MD5 of the generated body rather than the MD5 of
the manifest stored on disk.
* Provide useful status codes in logs for some versioning and symlink
subrequests that were previously logged as 499.
* Fixed 500 from cname_lookup middleware. Previously, if the looked-up
domain was used by domain_remap to update the request path, the
server would respond Internal Error.
* On Python 3, fixed an issue when reading or writing objects with a
content-type like `message/*`. Previously, Swift would fail to respond.
* On Python 3, fixed a RecursionError in swift-dispersion-report when
using TLS.
* Fixed a bug in the new object versioning API that would cause more
than `limit` results to be returned when listing.
* Various other minor bug fixes and improvements.
swift (2.24.0)
* Added a new object versioning mode, with APIs for querying and
accessing old versions. For more information, see the documentation
at https://docs.openstack.org/swift/latest/middleware.html#module-swift.common.middleware.versioned_writes.object_versioning
* Added support for S3 versioning using the above new mode.
* Added a new middleware to allow accounts and containers to opt-in to
RFC-compliant ETags. This may be useful when using Swift as an origin
for some content delivery networks. For more information, see the
documentation at https://docs.openstack.org/swift/latest/middleware.html#module-swift.common.middleware.etag_quoter
Clients should be aware of the fact that ETags may be quoted for RFC
compliance; this may become the default behavior in some future release.
* Proxy, account, container, and object servers now support "seamless
reloads" via `SIGUSR1`. This is similar to the existing graceful
restarts but keeps the server socket open the whole time, reducing
service downtime.
* New buckets created via the S3 API will now store multi-part upload
data in the same storage policy as other data rather than the
cluster's default storage policy.
* Device region and zone can now be changed via `swift-ring-builder`.
Note that this may cause a lot of data movement on the next rebalance
as the builder tries to reach full dispersion.
* Added support for Python 3.8.
* The container sharder can now handle containers with special
characters in their names.
* Internal client no longer logs object DELETEs as status 499.
* Objects with an `X-Delete-At` value in the far future no longer cause
backend server errors.
* The bulk extract middleware once again allows clients to specify metadata
(including expiration timestamps) for all objects in the archive.
* Container sync now synchronizes static symlinks in a way similar to
static large objects.
* `swift_source` is set for more sub-requests in the proxy-server. See
https://docs.openstack.org/swift/latest/logs.html#swift-source
* Errors encountered while validating static symlink targets no longer
cause BadResponseLength errors in the proxy-server.
* On Python 3, the KMS keymaster now works with secrets stored
in Barbican with a text/plain payload-content-type.
* On Python 3, the formpost middleware now works with unicode file names.
* Several utility scripts now work better on Python 3:
* swift-account-audit
* swift-dispersion-populate
* swift-drive-recon
* swift-recon
* On Python 3, certain S3 API headers are now lower case as they
would be coming from AWS.
* Per-service `auto_create_account_prefix` settings are now deprecated
and may be ignored in a future release; if you need to use this, please
set it in the `[swift-constraints]` section of /etc/swift/swift.conf.
* Various other minor bug fixes and improvements.
swift (2.23.1, train stable backports)
* On Python 3, the KMS keymaster now works with secrets stored
in Barbican with a text/plain payload-content-type.
* Several utility scripts now work better on Python 3:
* swift-account-audit
* swift-dispersion-populate
* swift-drive-recon
* swift-recon
swift (2.23.0, OpenStack Train)
* Python 3.6 and 3.7 are now fully supported. Several py3-related
fixes are included:
* Removed a request-smuggling vector when running a mixed
py2/py3 cluster.
* Allow fallocate_reserve to be specified as a percentage.
* Fixed listings for sharded containers.
* Fixed non-ASCII account metadata handling.
* Fixed rsync output parsing.
* Fixed some title-casing of headers.
If you've been testing Swift on Python 3, upgrade at your earliest
convenience.
* Added "static symlinks", which perform some validation as they
follow redirects and include more information about their target
in container listings.
* Multi-character strings may now be used as delimiters in account
and container listings.
* Sharding improvements
* Container metadata related to sharding are now removed when no
longer needed.
* Empty container databases (such as might be created on handoffs)
now shard much more quickly.
* The proxy-server now ignores 404 responses from handoffs that have
no data when deciding on the correct response for object requests,
similar to what it already does for account and container requests.
* Static Large Object sizes in listings for versioned containers are
now more accurate.
* When refetching Static Large Object manifests, non-manifest responses
are now handled better.
* S3 API now translates 503 Service Unavailable responses to a more
S3-like response instead of raising an error.
* Improved proxy-to-backend requests to be more RFC-compliant.
* Dependency update: eventlet must be at least 0.25.0. This also
dragged forward minimum-supported versions of dnspython (1.15.0),
greenlet (0.3.2), and six (1.10.0).
* Various other minor bug fixes and improvements.
swift (2.22.0)
* Experimental support for Python 3.6 and 3.7 is now available.
Note that this requires eventlet>=0.25.0. All unit tests pass,
and running functional tests under Python 2 will pass against
services running under Python 3. Expect full support in the
next minor release.
* Log formats are now more configurable and include support for
anonymization. See the log_msg_template option in proxy-server.conf
and https://docs.openstack.org/swift/latest/logs.html#proxy-logs
for more information.
* Added an operator tool, swift-container-deleter, to asynchronously
delete some or all objects in a container using the object expirers.
* Swift-all-in-one Docker images are now built and published to
https://hub.docker.com/r/openstackswift/saio. These are intended
for use as development targets, but will hopefully be useful as a
starting point for other work involving containerizing Swift.
* The object-expirer may now be configured in object-server.conf.
This is in anticipation of a future change to allow the
object-expirer to be deployed on all nodes that run object-servers.
* Correctness improvements
* The proxy-server now ignores 404 responses from handoffs without
databases when deciding on the correct response for account and
container requests.
* Object writes to a container whose existence cannot be verified
now 503 instead of 404.
* Sharding improvements
* The container-replicator now only attempts to fetch shard ranges if
the remote indicates that it has shard ranges. Further, it does so
with a timeout to prevent the process from hanging in certain cases.
* The proxy-server now caches 'updating' shards, improving write
performance for sharded containers. A new config option,
`recheck_updating_shard_ranges`, controls the cache time; set it to
0 to disable caching.
* The container-replicator now correctly enqueues container-reconciler
work for sharded containers.
* S3 API improvements
* Unsigned payloads work with v4 signatures once more.
* Multipart upload parts may now be copied from other multipart uploads.
* CompleteMultipartUpload requests with a Content-MD5 now work.
* Content-Type can now be updated when copying an object.
* Fixed v1 listings that end with a non-ASCII object name.
* Background corruption-detection improvements
* Detect and remove invalid entries from hashes.pkl
* When object path is not a directory, just quarantine it,
rather than the whole suffix.
* Dependency updates: we've increased our minimum supported version
of cryptography to 2.0.2 and netifaces to 0.8. This is largely due
to the difficulty of continuing to test with the old versions.
If running Swift under Python 3, eventlet must be at least 0.25.0.
* Various other minor bug fixes and improvements.
swift (2.21.1, stein stable backports)
* Sharding improvements
* The container-replicator now only attempts to fetch shard ranges if
the remote indicates that it has shard ranges. Further, it does so
with a timeout to prevent the process from hanging in certain cases.
* The container-replicator now correctly enqueues container-reconciler
work for sharded containers.
* Container metadata related to sharding are now removed when no
longer needed.
* S3 API improvements
* Unsigned payloads work with v4 signatures once more.
* Multipart upload parts may now be copied from other multipart uploads.
* CompleteMultipartUpload requests with a Content-MD5 now work.
* Content-Type can now be updated when copying an object.
* Fixed v1 listings that end with a non-ASCII object name.
* Background corruption-detection improvements
* Detect and remove invalid entries from hashes.pkl
* When object path is not a directory, just quarantine it,
rather than the whole suffix.
* Static Large Object sizes in listings for versioned containers are
now more accurate.
* When refetching Static Large Object manifests, non-manifest responses
are now handled better.
* Cross-account symlinks now store correct account information in
container listings. This was previously fixed in 2.22.0.
* Requesting multiple ranges from a Dynamic Large Object now returns the
entire object instead of incorrect data. This was previously fixed in
2.23.0.
* When making backend requests, the proxy-server now ensures query
parameters are always properly quoted. Previously, the proxy would
encounter an error on Python 2.7.17 if the client included non-ASCII
query parameters in object requests. This was previously fixed in
2.23.0.
swift (2.21.0, OpenStack Stein)
* Change the behavior of the EC reconstructor to perform a
fragment rebuild to a handoff node when a primary peer responds
with 507 to the REPLICATE request. This changes EC to match the
existing behavior of replication when drives fail. After a
rebalance of EC rings (potentially removing unmounted/failed
devices), it's most IO efficient to run in handoffs_only mode to
avoid unnecessary rebuilds.
* O_TMPFILE support is now detected by attempting to use it
instead of looking at the kernel version. This allows older
kernels with backported patches to take advantage of the
O_TMPFILE functionality.
* Add slo_manifest_hook callback to allow other middlewares to
impose additional constraints on or make edits to SLO manifests
before being written. For example, a middleware could enforce
minimum segment size or insert data segments.
* Fixed an issue with multi-region EC policies that caused the EC
reconstructor to constantly attempt cross-region rebuild
traffic.
* Fixed an issue where S3 API v4 signatures would not be validated
against the body of the request, allowing a replay attack if
request headers were captured by a malicious third party.
* Display crypto data/metadata details in swift-object-info.
* formpost can now accept a content-encoding parameter.
* Fixed an issue where multipart uploads with the S3 API would
sometimes report an error despite all segments being upload
successfully.
* Multipart object segments are now actually deleted when the
multipart object is deleted via the S3 API.
* Swift now returns a 503 (instead of a 500) when an account
auto-create fails.
* Fixed a bug where encryption would store the incorrect key
metadata if the object name starts with a slash.
* Fixed an issue where an object server failure during a client
download could leave an open socket between the proxy and
client.
* Fixed an issue where deleted EC objects didn't have their
on-disk directories cleaned up. This would cause extra resource
usage on the object servers.
* Fixed issue where bulk requests using xml and expect
100-continue would return a malformed HTTP response.
* Various other minor bug fixes and improvements.
swift (2.20.0)
* S3 API compatibility updates
* Swift can now cache the S3 secret from Keystone to use for
subsequent requests. This functionality is disabled by default but
can be enabled by setting the `secret_cache_duration` in the s3token
section of the proxy server config to a number greater than 0.
* s3api now mimics the AWS S3 behavior of periodically sending
whitespace characters on a Complete Multipart Upload request to keep
the connection from timing out. Note that since a request could fail
after the initial 200 OK response has been sent, it is important to
check the response body to determine if the request succeeded.
* s3api now properly handles x-amz-metadata-directive headers on
COPY operations.
* s3api now uses concurrency (default 2) to handle multi-delete
requests. This allows multi-delete requests to be processed much
more quickly.
* s3api now mimics some forms of AWS server-side encryption
based on whether Swift's at-rest encryption functionality is enabled.
Note that S3 API users are now able to know more about how the
cluster is configured than they were previously, ie knowledge of
encryption at-rest functionality being enabled or not.
* s3api responses now include a '-' in multipart ETags.
For new multipart-uploads via the S3 API, the ETag that is
stored will be calculated in the same way that AWS uses. This
ETag will be used in GET/HEAD responses, bucket listings, and
conditional requests via the S3 API. Accessing the same object
via the Swift API will use the SLO Etag; however, in JSON
container listings the multipart upload etag will be exposed
in a new "s3_etag" key. Previously, some S3 clients would complain
about download corruption when the ETag did not have a '-'.
* S3 ETag for SLOs now include a '-'.
Ordinary objects in S3 use the MD5 of the object as the ETag,
just like Swift. Multipart Uploads follow a different format, notably
including a dash followed by the number of segments. To that end
(and for S3 API requests *only*), SLO responses via the S3 API have a
literal '-N' added on the end of the ETag.
* The default location is now set to "us-east-1". This is more likely
to be the default region that a client will try when using v4
signatures.
Deployers with clusters that relied on the old implicit default
location of "US" should explicitly set `location = US` in the
`[filter:s3api]` section of proxy-server.conf before upgrading.
* Add basic support for ?versions bucket listings. We still do not
have support for toggling S3 bucket versioning, but we can at least
support getting the latest versions of all objects.
* Fixed an issue with SSYNC requests to ensure that only one request
can be running on a partition at a time.
* Data encryption updates
* The kmip_keymaster middleware can now be configured directly in the
proxy-server config file. The existing behavior of using an external
config file is still supported.
* Multiple keymaster middlewares are now supported. This allows
migration from one key provider to another.
Note that secret_id values must remain unique across all keymasters
in a given pipeline. If they are not unique, the right-most keymaster
will take precedence.
When looking for the active root secret, only the right-most
keymaster is used.
* Prevent PyKMIP's kmip_protocol logger from logging at DEBUG.