Kernel update: Virtuozzo ReadyKernel patch 103.0 for Virtuozzo 7.0 and Virtuozzo Hybrid Infrastructure 3.5

Issue date: 2020-04-10

Applies to: Virtuozzo 7.0, Virtuozzo Hybrid Infrastructure 3.5

Virtuozzo Advisory ID: VZA-2020-028

1. Overview

The cumulative Virtuozzo ReadyKernel patch was updated with an enhancement. The patch applies to the kernels 3.10.0-1062.4.2.vz7.116.7 (Virtuozzo 7.0.12 HF1 and Virtuozzo Hybrid Infrastructure 3.5), 3.10.0-1062.12.1.vz7.131.10 (Virtuozzo 7.0.13).

2. Bug Fixes

  • [3.10.0-1062.4.2.vz7.116.7 to 3.10.0-1062.12.1.vz7.131.10] (enhancement) ploop: added interface to dump the cached BAT. It was discovered that containers could get a broken on-disk BAT but have healthy in-kernel data in certain cases. To detect and fix such conditions, the means to dump the cached BAT were implemented in ploop. Note that, to make use of this enhancement, version or newer of the userspace ploop tools is needed. (PSBM-102848)

3. Installing the Update

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