# Kopia v0.6.0 Release Notes

**URL:** <https://kopia.discourse.group/t/kopia-v0-6-0-release-notes/22>\
**Category:** Announcements\
**Created:** [August 23, 2020, 4:51pm UTC](https://kopia.discourse.group/t/kopia-v0-6-0-release-notes/22 "2020-08-23T16:51:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jkowalski](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/jkowalski/32/3_2.png) [@jkowalski](https://kopia.discourse.group/u/jkowalski)\
**Post date:** [August 23, 2020, 4:51pm UTC](https://kopia.discourse.group/t/kopia-v0-6-0-release-notes/22/1 "2020-08-23T16:51:10Z")

</div>

Kopia v0.6.0:

This version brings manny performance, usability and stability improvements listed below, adds supports for new providers and CLI options and introduces major new features described at [https://kopia.io/docs/release-notes/v0.6.0/](https://kopia.io/docs/release-notes/v0.6.0/)

# Upgrade notes:

- Upgrading from 0.5.x is supported, make sure to follow instructions in [#503](https://github.com/kopia/kopia/issues/503) to enable maintenance tasks.
- Upgrading from 0.4.0 or earlier is not officially supported, it may work but use at your own risk. It’s strongly recommended to create new repository using v0.6.0 and [migrate existing snapshots](https://kopia.io/docs/reference/command-line/common/snapshot-migrate/) as outlined in the documentation.

# Changes in this release:

## core

```auto
* big performance improvements when snapshotting large directories (#331)
* improvements for dealing with eventually-consistent stores (S3) (#437)
* GC safety improvements to resolve race condition when content is re-referenced when about to be deleted (#420)
* added OpenCensus (#339)
* introduced explicit maintenance operations that perform periodic repository cleanup/compaction (#411)
* disabled automatic compaction on repository opening - moved to maintenance tasks
* added AsyncWrites to ObjectWriter, which improves performance… (#369)
* object: ensure that all I objects have a content prefix which improves locality by putting them in q packs
* deduplicate multiple policies for the same source in policy manager, fixes #391
* fixed race condition during Open() where we may read incomplete file
* deprecated NONE algorithm, will not be available for new repositories (#395)
* server: automatically flush the repository after setting or deleting a policy (#489)
* snapshot checkpointing (#410)
* moved creating cache directory from connect to first use (#450)
* persist relative path to cache if possible, this allows config directory to be partially portable
* server: implemented 'flush' and 'refresh' API
* experimental support for remote repository (#427)
* repo: refactored public API (#318)
* upload: auto-ignore kopia cache directories when creating snapshots (#524)

```

## KopiaUI

```auto
 * support for multiple repositories + portability (#398)
 * highlight snapshot errors (#376)

```

## Providers

```auto
* support for gather writes (#373)
* b2: added provider for backblaze b2
* sftp: add missing options for configuring sftp known_hosts
* s3: add CLI option for disabling tls verification while connecting to s3
* filesystem: added retry which addresses the macOS race condition

```

## CLI Improvements:

```auto
* added flags to control progress output
* 'kopia server' made --ui default (#452)
* allow override of snapshot start time and end time
* improved 'snapshot delete' usage (#436)
* Remove legacy flags from snapshot create command (#441)
* support for zip, tar and tar.gz restore outputs (#482)
* Support for repository sync (#522)

```

## Infrastructure:

```auto
* macOS and Windows KopiaUI builds are now signed
* robustness testing framework
* testing: added blob.Storage wrapper that simulates eventual consistency (#434)
* switched back to using v-prefixed tag names.
* tests: added smoke test that exercises all combinations of encryption and hashing

```

---

<div class="post-metadata">

**Author:** ![jkowalski](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/jkowalski/32/3_2.png) [@jkowalski](https://kopia.discourse.group/u/jkowalski)\
**Post date:** [August 23, 2020, 4:52pm UTC](https://kopia.discourse.group/t/kopia-v0-6-0-release-notes/22/2 "2020-08-23T16:52:34Z")

</div>

Please note that [v0.6.3](https://github.com/kopia/kopia/releases/tag/v0.6.3) us a recommended hotfix for v0.6.