# v20.2.2 Tentacle released

DevFeed: [v20.2.2 Tentacle released](<https://devfeed.tech/articles/v20-2-2-tentacle-released-12343.md>)

Original publisher: [Read original article](<https://ceph.io/en/news/blog/2026/v20-2-2-tentacle-released/>)

Author: Yuri Weinstein, Patrick Donnelly

Published: 2026-06-16T00:00:00Z

Content type: release

Language: en

Sources: [Ceph Blog](<https://devfeed.tech/sources/ceph-blog.md>)

Topics: [bug](<https://devfeed.tech/topics/bug.md>), [Vulnerabilities](<https://devfeed.tech/topics/vulnerabilities.md>), [Memory Leaks](<https://devfeed.tech/topics/memory-leaks.md>), [Encryption](<https://devfeed.tech/topics/encryption.md>), [configuration](<https://devfeed.tech/topics/configuration.md>), [IO](<https://devfeed.tech/topics/io.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [aio](<https://devfeed.tech/tags/aio.md>), [blog-post](<https://devfeed.tech/tags/blog-post.md>), [bug](<https://devfeed.tech/tags/bug.md>), [ceph](<https://devfeed.tech/tags/ceph.md>), [configuration](<https://devfeed.tech/tags/configuration.md>), [en-article](<https://devfeed.tech/tags/en-article.md>), [en-blog-post](<https://devfeed.tech/tags/en-blog-post.md>), [encryption](<https://devfeed.tech/tags/encryption.md>), [io](<https://devfeed.tech/tags/io.md>), [memory-leaks](<https://devfeed.tech/tags/memory-leaks.md>), [rados](<https://devfeed.tech/tags/rados.md>), [release](<https://devfeed.tech/tags/release.md>), [rgw](<https://devfeed.tech/tags/rgw.md>), [storage](<https://devfeed.tech/tags/storage.md>), [tentacle](<https://devfeed.tech/tags/tentacle.md>), [ui](<https://devfeed.tech/tags/ui.md>), [update](<https://devfeed.tech/tags/update.md>), [vulnerabilities](<https://devfeed.tech/tags/vulnerabilities.md>)

## AI overview

Ceph v20.2.2 Tentacle is a minor release that adds Rocky 10 package-install support and recommends updating. It fixes issues across MDS, OSD, RGW, RADOS libraries, watch/notify operations, asynchronous utilities, and the dashboard, including security vulnerabilities, memory leaks, encrypted-object lifecycle problems, and UI and configuration improvements.

## Source excerpt

This is the second minor release in the Tentacle series. We recommend that all users update to this release. Release Date ¶ June 16, 2026 Notable Changes ¶ Rocky 10 package-based installs are now supported starting with v20.2.2. Please see the supported platforms for current and planned support in Ceph. MDS (Metadata Server) ¶ Segmentation fault fixed due to incorrect queueing of request retries. OSD (Object Storage Daemon) ¶ PGLog Missed List: Fixed a bug to ensure the correct version is attached to the missing list when ignoring log entries. Data Integrity Asserts: Added assertions to explicitly catch potential corruption in the OSD missing list. RGW (RADOS Gateway) ¶ Lifecycle Management: Fixed lifecycle transition issues affecting encrypted multipart objects. REST & Query Handling: RESTArgs::get_string() now properly URL-decodes incoming query parameters. RADOS / librados / neorados ¶ Linger Operations: Rewrote safety checks to eliminate use-after-free vulnerabilities and LingerOp memory leaks when an unwatch operation returns ENOTCONN. Replaced the flawed is_valid_watch() check with a safe linger_by_cookie() lookup which safely manages LingerOp references using intrusive_ptr. Ensured librados linger callbacks hold a persistent reference to LingerOp to protect against races with simultaneous linger_cancel() requests. Configured librados::IoCtxImpl::aio_unwatch() to asynchronously deliver ENOTCONN to AioCompletion instead of returning the error directly. Watch/Notify: Fixed neorados notification queue bounds enforcement so that an overflow marker is only appended on the first message exceeding capacity, rather than duplicating it on every subsequent message. Prevented double-cleanup triggers in watch/notify operations when incoming errors arrive after maybe_cleanup() runs. Fixed a bug where notify would lose original error values by ensuring it no longer attempts to decode empty responses. Enhanced io_context shutdown procedures to clear handlers and route cleanl