https://peertube.watch/videos/watch/df6fd9f8-5450-44a9-bf77-d4883a5fe474 Crash-consistent snapshots of storage volumes are a required feature in today’s storage systems. In Kubernetes, the CSI protocol introduced the VolumeGroupSnapshot concept which requires crash-consistent snapshots be guaranteed within the context of volumes, which may be block devices or mounts on a distributed POSIX file system such as CephFS. This talk will cover the challenges and mechanisms to achieve this design goal. In particular, we will show how CephFS provides consistency by exposing a new API to pause write IOs to a set of volumes for the duration of the snapshot process. We will explore the new API, the mechanisms used to achieve this IO pause and discuss broadly the software changes made to Ceph. Speakers: Patrick Donnelly, Leonid Usov, Track: Software Defined Storage devroom, Room: K.3.201, When: Saturday 3 February 2024, 12:40–13:25 (Brussels time), Schedule: FOSDEM 2024 event page, Slides & links Slides, Licence: Creative Commons Attribution 2.0 Belgium (CC BY 2.0 BE) (as stated in the FOSDEM video archive). Attribution: “Crash-consistent group snapshots in CephFS for k8s CSI and you!” by Patrick Donnelly, Leonid Usov, FOSDEM 2024. Original recording: 2024/k3201/fosdem-2024-2127-crash-consistent-group-snapshots-in-cephfs-for-k8s-csi-and-you-.av1.webm from the FOSDEM video archive. This channel is an unofficial mirror; FOSDEM is a free and non-commercial event organised by the community for the community. Sun, 18 Oct 2026 20:57:19 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.watch https://peertube.watch/lazy-static/avatars/3b284627-b75f-409e-ac2e-10f4c2946f43.png https://peertube.watch/videos/watch/df6fd9f8-5450-44a9-bf77-d4883a5fe474 All rights reserved, unless otherwise specified in the terms specified at https://peertube.watch/about and potential licenses granted by each content's rightholder.