Article ID: 126799, created on Sep 3, 2015, last review on Sep 9, 2015

  • Applies to:
  • Virtuozzo containers for Linux 4.7

Issue date: 2015-09-03

1. What's Included in This Update

This update includes a new Virtuozzo Containers for Linux 4.7 kernel (2.6.32-042stab111.11) based on the Red Hat Enterprise Linux 6.6 kernel (2.6.32-504.30.3.el6). The new kernel introduces stability fixes.

2. Bug Fixes

  • ploop could get stuck inside ploop_make_request() causing Node to hang (#PSBM-29066, #OVZ-6293, #OVZ-6392)

  • Under certain network workload, Container checkpoint/restore operations could result in conntrack duplication which could prevent online migration of said Container. (#PSBM-32411)

  • Soft lockup in 'cgroup_kernel_close()'. (#PSBM-33300)

  • Kernel could crash in 'attach_task_by_pid()' when tasks exited. (#PSBM-33381)

  • CPT image compatibility was broken in 042stab108.x kernels. As a result, received but nondelivered TCP packets saved into CPT image could, in certain circumstances, lose TCP flags during restore on 042stab108.x kernels. This resulted in incorrect processing of restored packets and could cause unexpected kernel warnings or lead to issues in userspace applications. (#PSBM-33549, #OVZ-3237)

  • Fixed the reason of invalid warning "ida_remove called for id=0 which is not allocated." (#PSBM-33789, #OVZ-3117)

  • ploop journal could get stuck in 'blockwritefull_page()' causing Node to hang. (#PSBM-35095)

  • In certain circumstances, Hardware Nodes with 108.x kernels could crash. (#PSBM-37612)

  • rsyslogd was not allowed to dump Container-related kernel messages inside Container. (#OVZ-2693)

3. Obtaining the Update

You can download and install the update using the vzup2date utility included in the Virtuozzo Containers for Linux 4.7 distribution set.

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