v2.6.1
Release v2.6.1
Release Date: 19th April, 2024
Summary
OpenEBS Replicated PV Mayastor version 2.6 provides volume expansion support for a Mayastor volume with automatic resizing of file-system by the CSI-resizer. Mayastor v2.6 enhances snapshot capabilities by ensuring file-system consistency before taking a snapshot. Mayastor v2.6 also enhances monitoring by exporting performance metrics like IOPs, throughput, and latency for Mayastor pools, volumes, and replicas. In this release, the event generation capabilities have been expanded to include more events. In addition, this release has fixes related to snapshots, upgrades, availability, stability, and supportability.
What's Changed
This patch fixes an issue for older Linux kernels (<5.8) where /proc/mounts iteration would deadlock causing CSI volumes to get stuck during the staging process.
Fixes
- fix(block/list): update deps to get safeMountIter fix by @tiagolobocastro in #1639
- fix(csi-node/mounts): update deps to get safeMountIter fix by @tiagolobocastro in openebs/mayastor-control-plane#809
- chore(helm): add helm var to control safe mounts by @tiagolobocastro in openebs/mayastor-extensions#491
Testing
Mayastor is subject to extensive unit, component and system-level testing throughout the development and release cycle. Resources for system-level (E2E) testing are currently provided by DataCore Software.
At this time, personnel and hardware resource limitations constrain testing by the maintainers to linux builds on x86. This reflects the primary use-case which the maintainers are currently targeting with the OpenEBS Mayastor project. Therefore, the use of Mayastor with other operating systems and/or architectures, if even possible, should be considered serendipitous and wholly experimental.
This release has been subject to End-to-End testing under Ubuntu 20.04.5_LTS (kernel: ubuntu-5.15.0-50-generic)
- Tested k8s versions
- 1.23.7
- 1.24.14
- 1.25.10
Known Behavioural Limitations
As with the previous versions, the Mayastor IO engine makes full utilisation of the allocated CPU cores regardless of I/O load. This is the poller operating at full speed, waiting for I/O.
As with the previous versions, a Mayastor DiskPool is limited to a single block device and cannot span across more than one block device.
Known Issues
Mayastor does not support the capacity expansion of DiskPools as of v2.6.1.
