Calibre RHEL/CentOS 6
Support Overview and Roadmap
Notice of Intention to Discontinue Calibre Support on RHEL/CentOS 6
In order to allow time for platform transition planning, Calibre is providing notice that support for the Red Hat Enterprise Linux® (RHEL) and CentOS version 6 series will be deprecated and then completely discontinued based upon the schedule below. With Red Hat’s general support for RHEL/CentOS 6 reaching end-of-life in November 2020 and new higher-performance hardware offerings requiring newer OS versions, we have concluded that Calibre 2019.4 is the last release that will offer full support for the RHEL/CentOS 6 series.
In coordination with published Red Hat dates, Calibre plans to discontinue support for the RHEL/CentOS 6 OS series per the following schedule:
RHEL/CentOS 6.10 is the Recommended RHEL/CentOS 6 Version
Note that support for RHEL/CentOS 6.1 through 6.6 is discontinued due to the serious defects described below. We strongly recommend that any customer currently using earlier versions of RHEL/CentOS 6 upgrade to RHEL/CentOS 6.10 or RHEL/CentOS 7. Calibre will still run on RHEL/CentOS 6.1 through 6.6 releases, but any issues found will need to be reproduced on one of the supported OS versions in order to be addressed. Please refer to the Mentor Graphics “Linux Distribution Compatibility Statement” on the main Road Map page.
RHEL/CentOS 6 Issues Known to Impact Calibre Software
·
RHEL/CentOS
6.8
Strongly Recommended: Apply the following kernel patch to fix threading
issues (tasklist_lock starvation) in highly-threaded
workloads: kernel v2.6.32-696.
·
RHEL/CentOS
6.7
Strongly Recommended: RHBA-2015:1822 fixes the race condition in the
malloc API
Recommended: RHBA-2015:1992 Superseded patch of RHBA-2015:1827 fixes
automounter error "set_tsd_user_vars:
failed to get passwd info from getpwuid_r"
·
RHEL/CentOS
6.6
Calibre can hang on fourth generation Intel processors due to a
RHEL/CentOS 6.6 OS issue. Reference KB
Article 590923. This problem can be fixed by patching the
kernel, or (preferably) by upgrading to RHEL/CentOS 6.10.
·
RHEL/CentOS
6.5
A RHEL/CentOS 6.5 performance degradation related to BIOS
settings on some hardware models has been observed and has been investigated.
The only user observable symptom of the problem is a machine that should be
running at 100% CPU usage is running at 75% CPU usage.
· This problem does not cause corruption or data loss
· The problem occurs with RHEL/CentOS 6.5 in conjunction with some hardware
· We do not know and have no way to easily determine if the issue affects a particular hardware or CPU model
· The problem is entirely performance related
· This has not been with RHEL/CentOS 6.6 or newer
RHEL/CentOS 6 Retro-qualification of Older Calibre Releases
In order to support customer requirements for upgrading to new hardware and associated operating systems, Calibre has qualified or partially qualified a number of older Calibre releases on RHEL/CentOS 6. RHEL/CentOS 6 support was initially introduced with the Calibre 2011.2 release. Older release branches (2008 – 2011.1) were subsequently patched and qualified. Please note that if you want to use those older Calibre release branches on RHEL/CentOS 6 systems, a newer Calibre version (a patch release) will be required that enables execution. Please contact Mentor Graphics Customer Support for more details or to request the latest patch that provides RHEL/CentOS 6 support for specific release branches.
Also note that all releases prior to Calibre 2009.3 will consume a license for hyper-threaded virtual cores on Intel i3, i5, and i7 processors or newer. The capability to handle these hyper-threaded virtual cores without consuming a license is available with Calibre 2009.3 and newer releases.
RHEL/CentOS 6 Support for Specific Calibre Releases
Calibre Releases |
RHEL 6.1-6.3 |
RHEL 6.4-6.6 |
RHEL 6.7 |
RHEL 6.8-6.10 |
2008 - 2010 |
* |
* |
|
* |
2011.1 |
* |
* |
|
* |
2011.2/3/4 |
|
|
|
|
2012 - 2015 |
|
|
|
|
2016 - 2017 |
|
|
|
|
2018 - 2019 |
|
|
|
|
2020 |
|
|
|
|
2021 |
|
|
|
|
2022 – 2024.2 |
|
|
|
limited |
2024.3+ |
|
|
|
|
* |
Supported, contact Calibre Customer Support for the latest patch that supports RHEL/CentOS 6 or 7 systems |
|
Supported |
|
Still supported but not recommended |
limited |
Still supported, not recommended, enabling environment variable required |
|
Discontinued, no support |
Please
see Table 1, Calibre Platform Identifiers, on the main Calibre Platform Support Overview and Roadmap
page for which platform identifiers that can be used with each OS version.
Updated 30 Oct 2020
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