Kernel update: Virtuozzo ReadyKernel patch 100.0 for Virtuozzo 7.0, Virtuozzo Infrastructure Platform 3.0 and Virtuozzo Infrastructure 3.5

Issue date: 2020-03-17

Applies to: Virtuozzo 7.0, Virtuozzo Infrastructure Platform 3.0, Virtuozzo Infrastructure 3.5

Virtuozzo Advisory ID: VZA-2020-020

1. Overview

The cumulative Virtuozzo ReadyKernel patch was updated with a stability fix. The patch applies to the kernels 3.10.0-957.12.2.vz7.96.21 (Virtuozzo 7.0.11 and Virtuozzo Infrastructure Platform 3.0), 3.10.0-1062.4.2.vz7.116.7 (Virtuozzo 7.0.12 HF1 and Virtuozzo Infrastructure 3.5).

2. Bug Fixes

[3.10.0-957.12.2.vz7.96.21 to 3.10.0-1062.4.2.vz7.116.7] ploop: potential corruption of the index during discard operation. A race condition was discovered in ploop, which could lead to corruption of the index during discard operations in certain cases. NOTE: It is not recommended to manually unload the ReadyKernel patch with the fix for this issue while any discard operations for ploop images are in progress: the ploop images could be corrupted as a result. Upgrading the patch is OK, only manual unloads and downgrades can be problematic. (PSBM-101823)

3. Installing the Update

Download, install, and immediately apply the patch to the current kernel by running ‘readykernel update’.

4. References

The JSON file with the list of new and updated packages is available at JSON file.