xrootd.org

Release announcement - 6.0.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 09 Apr 2026 00:00:00 +0000

Release announcement - 6.0.0

The XRootD 6.0.0 major release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v6.0.0
Release History: https://github.com/xrootd/xrootd/blob/v6.0.0/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v6.0.0/xrootd-6.0.0.tar.gz

Release announcement - 5.9.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 27 Mar 2026 00:00:00 +0000

Release announcement - 5.9.2

The XRootD 5.9.2 patch release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.9.2
Release History: https://github.com/xrootd/xrootd/blob/v5.9.2/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.9.2/xrootd-5.9.2.tar.gz

Release announcement - 5.9.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 17 Nov 2025 00:00:00 +0000

Release announcement - 5.9.1

The XRootD 5.9.1 patch release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.9.1
Release History: https://github.com/xrootd/xrootd/blob/v5.9.1/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.9.1/xrootd-5.9.1.tar.gz

Release announcement - 5.9.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Sat, 04 Oct 2025 00:00:00 +0000

Release announcement - 5.9.0

The XRootD 5.9.0 feature release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.9.0
Release History: https://github.com/xrootd/xrootd/blob/v5.9.0/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.9.0/xrootd-5.9.0.tar.gz

Release announcement - 5.8.4

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 10 Jul 2025 00:00:00 +0000

Release announcement - 5.8.4

The XRootD 5.8.4 patch release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.8.4
Release History: https://github.com/xrootd/xrootd/blob/v5.8.4/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.8.4/xrootd-5.8.4.tar.gz

Release announcement - 5.8.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 05 Jun 2025 00:00:00 +0000

Release announcement - 5.8.3

The XRootD 5.8.3 patch release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.8.3
Release History: https://github.com/xrootd/xrootd/blob/v5.8.3/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.8.3/xrootd-5.8.3.tar.gz

Release announcement - 5.8.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 08 May 2025 00:00:00 +0000

Release announcement - 5.8.2

The XRootD 5.8.2 patch release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.8.2
Release History: https://github.com/xrootd/xrootd/blob/v5.8.2/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.8.2/xrootd-5.8.2.tar.gz

Release announcement - 5.8.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 15 Apr 2025 00:00:00 +0000

Release announcement - 5.8.1

The XRootD 5.8.1 patch release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.8.1
Release History: https://github.com/xrootd/xrootd/blob/v5.8.1/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.8.1/xrootd-5.8.1.tar.gz

Release announcement - 5.8.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 21 Mar 2025 00:00:00 +0000

Release announcement - 5.8.0

The XRootD 5.8.0 patch release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.8.0
Release History: https://github.com/xrootd/xrootd/blob/v5.8.0/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.8.0/xrootd-5.8.0.tar.gz

Release announcement - 5.7.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 28 Jan 2025 00:00:00 +0000

Release announcement - 5.7.3

The XRootD 5.7.3 patch release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.7.3
Release History: https://github.com/xrootd/xrootd/blob/v5.7.3/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.7.3/xrootd-5.7.3.tar.gz

Release announcement - 5.7.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 29 Nov 2024 00:00:00 +0000

Release announcement - 5.7.2

The XRootD 5.7.2 patch release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.7.2
Release History: https://github.com/xrootd/xrootd/blob/v5.7.2/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.7.2/xrootd-5.7.2.tar.gz

Release announcement - 5.7.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 03 Sep 2024 00:00:00 +0000

Release announcement - 5.7.1

The XRootD 5.7.1 patch release has been tagged. Please follow the links below for the release notes and more details.

RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.7.1
Release History: https://github.com/xrootd/xrootd/blob/v5.7.1/docs/ReleaseNotes.txt
Source Tarball: https://xrootd.web.cern.ch/download/v5.7.1/xrootd-5.7.1.tar.gz

Release announcement - 5.7.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 01 Jul 2024 00:00:00 +0000

Release announcement - 5.7.0

The XRootD 5.7.0 feature release has been tagged. Please follow the links below for the release notes and more details.

Important Information:

XRootD now requires C++17 standard
Support for Python 2.x is now deprecated
Support for CentOS 7 is now deprecated (although official RPMs for 5.7.0 are available)
RPMs for the XRootD Doxygen documentation will no longer be provided in the official RPM repositories (as a workaround, please access the docs directly on the website, or install xrootd-doc from EPEL)
Official repositories are now provided for Debian 11, Debian 12, Ubuntu 22.04, Ubuntu 24.04. For more instructions, please see: https://xrootd.web.cern.ch/dload.html#official-deb-repositories
Source: https://xrootd.web.cern.ch/download/v5.7.0/xrootd-5.7.0.tar.gz
RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.7.0
Release History: https://github.com/xrootd/xrootd/blob/v5.7.0/docs/ReleaseNotes.txt

Release announcement - 5.6.9

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 08 Mar 2024 00:00:00 +0000

Release announcement - 5.6.9

The XRootD 5.6.9 bugfix release has been tagged. Please follow the links below for the release notes and more details.

Source: https://xrootd.web.cern.ch/download/v5.6.9/xrootd-5.6.9.tar.gz
RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.6.9
Release History: https://github.com/xrootd/xrootd/blob/v5.6.9/docs/ReleaseNotes.txt

Release announcement - 5.6.8

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 23 Feb 2024 00:00:00 +0000

Release announcement - 5.6.8

The XRootD 5.6.8 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been moved to the new stable yum repositories and are no longer pushed into the old storage-ci repository.

Source: https://xrootd.web.cern.ch/download/v5.6.8/xrootd-5.6.8.tar.gz
RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.6.8
Release History: https://github.com/xrootd/xrootd/blob/v5.6.8/docs/ReleaseNotes.txt

Release announcement - 5.6.7

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 06 Feb 2024 00:00:00 +0000

Release announcement - 5.6.7

The XRootD 5.6.7 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been moved to the new stable yum repositories and are no longer pushed into the old storage-ci repository.

Source: https://xrootd.web.cern.ch/download/v5.6.7/xrootd-5.6.7.tar.gz
RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.6.7

Release announcement - 5.6.6

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 25 Jan 2024 00:00:00 +0000

Release announcement - 5.6.6

The XRootD 5.6.6 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been moved to the new stable yum repositories and are no longer pushed into the old storage-ci repository.

Source: https://xrootd.web.cern.ch/download/v5.6.6/xrootd-5.6.6.tar.gz
RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.6.6

Release announcement - 5.6.5

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 22 Jan 2024 00:00:00 +0000

Release announcement - 5.6.5

The XRootD 5.6.5 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been moved to the new stable yum repositories and are no longer pushed into the old storage-ci repository.

Source: https://xrootd.web.cern.ch/download/v5.6.5/xrootd-5.6.5.tar.gz
RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.6.5

Release announcement - 5.6.4

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 11 Dec 2023 00:00:00 +0000

Release announcement - 5.6.4

The XRootD 5.6.4 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been moved to the new stable yum repositories and are no longer pushed into the old storage-ci repository.

Source: https://xrootd.web.cern.ch/download/v5.6.4/xrootd-5.6.4.tar.gz
RHEL RPMs: https://cern.ch/xrootd/xrootd.repo
Fedora RPMs: https://cern.ch/xrootd/xrootd-fedora.repo
Release Notes: https://github.com/xrootd/xrootd/releases/tag/v5.6.4

Release announcement - 5.6.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 27 Oct 2023 00:00:00 +0000

Release announcement - 5.6.3

The XRootD 5.6.3 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.6.3/xrootd-5.6.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.6.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.6.3/docs/ReleaseNotes.txt

Release announcement - 5.6.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 15 Sep 2023 00:00:00 +0000

Release announcement - 5.6.2

The XRootD 5.6.2 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.6.2/xrootd-5.6.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.6.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.6.2/docs/ReleaseNotes.txt

Release announcement - 5.6.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 11 Jul 2023 00:00:00 +0000

Release announcement - 5.6.1

The XRootD 5.6.1 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.6.1/xrootd-5.6.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.6.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.6.1/docs/ReleaseNotes.txt

Release announcement - 5.6.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 30 Jun 2023 00:00:00 +0000

Release announcement - 5.6.0

The XRootD 5.6.0 feature release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.6.0/xrootd-5.6.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.6.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.6.0/docs/ReleaseNotes.txt

Release announcement - 5.5.5

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 08 May 2023 00:00:00 +0000

Release announcement - 5.5.5

The XRootD 5.5.5 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.5.5/xrootd-5.5.5.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.5.5/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.5.5/docs/ReleaseNotes.txt

Release announcement - 5.5.4

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 24 Mar 2023 00:00:00 +0000

Release announcement - 5.5.4

The XRootD 5.5.4 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.5.4/xrootd-5.5.4.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.5.4/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.5.4/docs/ReleaseNotes.txt

Release announcement - 5.5.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 17 Feb 2023 00:00:00 +0000

Release announcement - 5.5.3

The XRootD 5.5.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.5.3/xrootd-5.5.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.5.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.5.3/docs/ReleaseNotes.txt

Release announcement - 5.5.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 07 Feb 2023 00:00:00 +0000

Release announcement - 5.5.2

The XRootD 5.5.2 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.5.2/xrootd-5.5.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.5.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.5.2/docs/ReleaseNotes.txt

Release announcement - 5.5.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 19 Oct 2022 00:00:00 +0000

Release announcement - 5.5.1

The XRootD 5.5.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.5.1/xrootd-5.5.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.5.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.5.1/docs/ReleaseNotes.txt

Release announcement - 5.5.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 26 Aug 2022 00:00:00 +0000

Release announcement - 5.5.0

The XRootD 5.5.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.5.0/xrootd-5.5.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.5.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.5.0/docs/ReleaseNotes.txt

Release announcement - 5.4.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 09 Jun 2022 00:00:00 +0000

Release announcement - 5.4.3

The XRootD 5.4.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.4.3/xrootd-5.4.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.4.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.4.3/docs/ReleaseNotes.txt

Release announcement - 5.4.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 02 Mar 2022 00:00:00 +0000

Release announcement - 5.4.2

The XRootD 5.4.2 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.4.2/xrootd-5.4.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.4.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.4.2/docs/ReleaseNotes.txt

Release announcement - 5.4.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 23 Feb 2022 00:00:00 +0000

Release announcement - 5.4.1

The XRootD 5.4.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.4.1/xrootd-5.4.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.4.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.4.1/docs/ReleaseNotes.txt

Release announcement - 5.4.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 10 Dec 2021 00:00:00 +0000

Release announcement - 5.4.0

The XRootD 5.4.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.4.0/xrootd-5.4.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.4.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/releases

Release announcement - 5.3.4

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 29 Nov 2021 00:00:00 +0000

Release announcement - 5.3.4

The XRootD 5.3.4 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.3.4/xrootd-5.3.4.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.3.4/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.3.4/docs/ReleaseNotes.txt

Release announcement - 5.3.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 15 Nov 2021 00:00:00 +0000

Release announcement - 5.3.3

The XRootD 5.3.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.3.3/xrootd-5.3.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.3.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.3.3/docs/ReleaseNotes.txt

Release announcement - 5.3.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 22 Oct 2021 00:00:00 +0000

Release announcement - 5.3.2

The XRootD 5.3.2 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.3.2/xrootd-5.3.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.3.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.3.2/docs/ReleaseNotes.txt

Release announcement - 5.3.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 30 Jul 2021 00:00:00 +0000

Release announcement - 5.3.1

The XRootD 5.3.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.3.1/xrootd-5.3.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.3.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.3.1/docs/ReleaseNotes.txt

Release announcement - 5.3.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 09 Jul 2021 00:00:00 +0000

Release announcement - 5.3.0

The XRootD 5.3.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.3.0/xrootd-5.3.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.3.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.3.0/docs/ReleaseNotes.txt

Release announcement - 5.2.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 20 May 2021 00:00:00 +0000

Release announcement - 5.2.0

The XRootD 5.2.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.2.0/xrootd-5.2.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.2.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.2.0/docs/ReleaseNotes.txt

Note: Please note that starting with version 5.2.0 we build XRootD with c++14 standard (builds on RHEL7 platforms require devtoolset-7).

Release announcement - 5.1.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 10 Mar 2021 00:00:00 +0000

Release announcement - 5.1.1

The XRootD 5.1.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.1.1/xrootd-5.1.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.1.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.1.1/docs/ReleaseNotes.txt

Note: Please note that xrdfs ls is now complient with shell semantics in case of file arguments.

Release announcement - 5.1.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 23 Feb 2021 00:00:00 +0000

Release announcement - 5.1.0

The XRootD 5.1.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.1.0/xrootd-5.1.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.1.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.1.0/docs/ReleaseNotes.txt

Note: Please note that the SLC6 builds have been discontinued.

Release announcement - 4.12.6

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 11 Dec 2020 00:00:00 +0000

Release announcement - 4.12.6

The XRootD 4.12.6 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.12.6/xrootd-4.12.6.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.12.6/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.12.6/docs/ReleaseNotes.txt

Release announcement - 5.0.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 11 Nov 2020 00:00:00 +0000

Release announcement - 5.0.3

The XRootD 5.0.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.0.3/xrootd-5.0.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.0.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.0.3/docs/ReleaseNotes.txt

Release announcement - 4.12.5

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 16 Oct 2020 00:00:00 +0000

Release announcement - 4.12.5

The XRootD 4.12.5 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.12.5/xrootd-4.12.5.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.12.5/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.12.5/docs/ReleaseNotes.txt

Release announcement - 5.0.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 18 Sep 2020 00:00:00 +0000

Release announcement - 5.0.2

The XRootD 5.0.2 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.0.2/xrootd-5.0.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.0.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.0.2/docs/ReleaseNotes.txt

Please note: Following patches: [OFS] Correct missparsing ‘+cksio’ option to avoid config failure. [Server] Strip out explicit plugin version designation with nasty message. are addressing the incompatibility with DPM config files introduces in XRootD5.

Release announcement - 4.12.4

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 03 Sep 2020 00:00:00 +0000

Release announcement - 4.12.4

The XRootD 4.12.4 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.12.4/xrootd-4.12.4.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.12.4/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.12.4/docs/ReleaseNotes.txt

Release announcement - 5.0.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 12 Aug 2020 00:00:00 +0000

Release announcement - 5.0.1

The XRootD 5.0.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.0.1/xrootd-5.0.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.0.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.0.1/docs/ReleaseNotes.txt

Release announcement - 5.0.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 07 Jul 2020 00:00:00 +0000

Release announcement - 5.0.0

The XRootD 5.0.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v5.0.0/xrootd-5.0.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/5.0.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v5.0.0/docs/ReleaseNotes.txt

Please note: starting with version 5.0.0 XRootD protocol supports encryption.

Release announcement - 4.12.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 11 Jun 2020 00:00:00 +0000

Release announcement - 4.12.3

The XRootD 4.12.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.12.3/xrootd-4.12.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.12.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.12.3/docs/ReleaseNotes.txt

Release announcement - 4.12.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 05 Jun 2020 00:00:00 +0000

Release announcement - 4.12.2

The XRootD 4.12.2 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.12.2/xrootd-4.12.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.12.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.12.2/docs/ReleaseNotes.txt

Please note: starting with 4.12.2 the xrootd-voms package will be included in EPEL release.

Please note: commit a20fe39 (https://github.com/xrootd/xrootd/commit/a20fe39385e7c02f09e64befd349a7ca8a9a707f) has been reverted in 4.12.2, as it has been disturbing for DPM community; to configure a redirector to NOT handle dirlist locally please set ofs.dirlist remote.

Release announcement - 4.12.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 13 May 2020 00:00:00 +0000

Release announcement - 4.12.1

The XRootD 4.12.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.12.1/xrootd-4.12.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.12.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.12.1/docs/ReleaseNotes.txt

Please note: the release contains the bugfix for issue #1191 (https://github.com/xrootd/xrootd/issues/1191).

Release announcement - 4.12.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 08 May 2020 00:00:00 +0000

Release announcement - 4.12.0

The XRootD 4.12.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.12.0/xrootd-4.12.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.12.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.12.0/docs/ReleaseNotes.txt

Release announcement - 4.11.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 23 Mar 2020 00:00:00 +0000

Release announcement - 4.11.3

The XRootD 4.11.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.11.3/xrootd-4.11.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.11.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.11.3/docs/ReleaseNotes.txt

Release announcement - 4.11.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 03 Feb 2020 00:00:00 +0000

Release announcement - 4.11.2

The XRootD 4.11.2 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.11.2/xrootd-4.11.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.11.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.11.2/docs/ReleaseNotes.txt

Release announcement - 4.11.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 17 Dec 2019 00:00:00 +0000

Release announcement - 4.11.1

The XRootD 4.11.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.11.1/xrootd-4.11.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.11.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.11.1/docs/ReleaseNotes.txt

Release announcement - 4.11.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 09 Oct 2019 00:00:00 +0000

Release announcement - 4.11.0

The XRootD 4.11.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.11.0/xrootd-4.11.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.11.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.11.0/docs/ReleaseNotes.txt

Release announcement - 4.10.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 01 Oct 2019 00:00:00 +0000

Release announcement - 4.10.1

The XRootD 4.10.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Release announcement - 4.10.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 15 Jul 2019 00:00:00 +0000

Release announcement - 4.10.0

The XRootD 4.10.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.10.0/xrootd-4.10.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.10.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.10.0/docs/ReleaseNotes.txt

Release announcement - 4.9.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 05 Apr 2019 00:00:00 +0000

Release announcement - 4.9.1

The XRootD 4.9.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.9.1/xrootd-4.9.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.9.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.9.1/docs/ReleaseNotes.txt

Release announcement - 4.8.6

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 02 Apr 2019 00:00:00 +0000

Release announcement - 4.8.6

The XRootD 4.8.6 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.8.6/xrootd-4.8.6.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.8.6/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.8.6/docs/ReleaseNotes.txt

Release announcement - 4.9.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 22 Feb 2019 00:00:00 +0000

Release announcement - 4.9.0

The XRootD 4.9.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.9.0/xrootd-4.9.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.9.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.9.0/docs/ReleaseNotes.txt

Release announcement - 4.8.5

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 22 Oct 2018 00:00:00 +0000

Release announcement - 4.8.5

The XRootD 4.8.5 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.8.5/xrootd-4.8.5.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.8.5/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.8.5/docs/ReleaseNotes.txt

Release announcement - 4.8.4

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 06 Jul 2018 00:00:00 +0000

Release announcement - 4.8.4

The XRootD 4.8.4 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.8.4/xrootd-4.8.4.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.8.4/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.8.4/docs/ReleaseNotes.txt

Release announcement - 4.8.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 27 Apr 2018 00:00:00 +0000

Release announcement - 4.8.3

The XRootD 4.8.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.8.3/xrootd-4.8.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.8.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.8.3/docs/ReleaseNotes.txt

Release announcement - 4.8.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 11 Apr 2018 00:00:00 +0000

Release announcement - 4.8.2

The XRootD 4.8.2 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.8.2/xrootd-4.8.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.8.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.8.2/docs/ReleaseNotes.txt

Note: Please note that there was an ABI change in XrdSsi. Reminder: Please note that the old client (xrd, xrdcp-old) have benn deprecated since version 4.0.0.

Release announcement - 4.8.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 29 Jan 2018 00:00:00 +0000

Release announcement - 4.8.1

The XRootD 4.8.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.8.1/xrootd-4.8.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.8.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.8.1/docs/ReleaseNotes.txt

Release announcement - 4.8.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 14 Dec 2017 00:00:00 +0000

Release announcement - 4.8.0

The XRootD 4.8.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.8.0/xrootd-4.8.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.8.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.8.0/docs/ReleaseNotes.txt

Release announcement - 4.7.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 01 Nov 2017 00:00:00 +0000

Release announcement - 4.7.1

The XRootD 4.7.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.7.1/xrootd-4.7.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.7.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.7.1/docs/ReleaseNotes.txt

Release announcement - 4.7.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 28 Aug 2017 00:00:00 +0000

Release announcement - 4.7.0

The XRootD 4.7.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.7.0/xrootd-4.7.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.7.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.7.0/docs/ReleaseNotes.txt

Release announcement - 4.6.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 08 May 2017 00:00:00 +0000

Release announcement - 4.6.1

The XRootD 4.6.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.6.1/xrootd-4.6.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.6.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.6.1/docs/ReleaseNotes.txt

Release announcement - 4.6.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 07 Feb 2017 00:00:00 +0000

Release announcement - 4.6.0

The XRootD 4.6.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.6.0/xrootd-4.6.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.6.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.6.0/docs/ReleaseNotes.txt

Release announcement - 4.5.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 11 Nov 2016 00:00:00 +0000

Release announcement - 4.5.0

The XRootD 4.5.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.5.0/xrootd-4.5.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.5.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.5.0/docs/ReleaseNotes.txt

Release announcement - 4.4.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 03 Oct 2016 00:00:00 +0000

Release announcement - 4.4.1

The XRootD 4.4.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.4.1/xrootd-4.4.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.4.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.4.1/docs/ReleaseNotes.txt

Release announcement - 4.2.4

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 30 Sep 2016 00:00:00 +0000

Release announcement - 4.2.4

The XRootD 4.2.4 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.2.4/xrootd-4.2.4.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.2.4/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.2.4/docs/ReleaseNotes.txt

Collaboration Meeting Minutes

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 21 Sep 2016 00:00:00 +0000

XRootD Collaboration Meeting held at CERN 21-September-2016

Attendees:

Andreas Peters (CERN)
Andrew Hanushevsky (SLAC)
Douglas Benjamin (Duke)
Elvin Sindrilaru (CERN)
Dirk Duellmann (CERN)
Girardo Ganis (CERN)
Michal Simon (CERN)
Wei Yang (SLAC)

Discussion Topics

Current Activities

Andreas: Working on a distributed key/value store as an XRootD plugin. Currently, it has a dependency on rocksDB (Facebook). Will look in making it available via the mainline repository after it is finished.
Andrew: Working on quotas, request signing, SSI and sequencing development activities.
Dirk: Analyzing EOS access records with data being dumped into XRootD for future use.
Doug: Most time spent on supporting XRootD at Tier 3 US sites.
Elvin: Worked on speeding up matching requests with handlers speedup in the client.
Gerri: Fixing GSI certificate cache race conditions. This may require a complete revision of certificate caching code. Also plans n doing a timebased clean up of the certificate cache on theclient side. Finally, extending the VOMS plug-in to be more extensible.
Michal: Extracting files from zip archives (done), metalink support (done), extreme copy (ongoing), and request signing

Active Development

Extreme copy option for xrdcp.
Proxy cache.
Quotas
Scalable Service Interface.
Signing requests for improved security.

Planned Development (near term)

AuthDB extension to make decisions based on role and organization membership.
kXR_mv extensions to support file names with imbedded spaces.
Message interface for XRootD to XRootD messages using the cms redirection network (quotas need this).
Separate timeout for negative response caching in the cmsd.
Vector writes in the client interface (identical to writev).

Planned Development (long term)

Allow users to set and query extended attributes (may require new request code for cleaner implementation).
Distribution via Docker container.
Dynamic file source selection in the client.
Proxy delegation for third party copy (use the getfile and putfile request codes).
Redirection trace back on the client when things to awry.
Removing lookup delays when opening a file in write mode.
Support local files natively via the client (i.e. file:// protocol).
User id and group id tracking for authentication protocols that support uid’s and gid’s.

Development Discussion

We discussed priorities on this long list of activities. While overall priorities have not been set, the top items in priority order are:

Caching proxy
Request signing
Quotas
Extreme copy

The next release, 4.5, is largely driven by proxy cache availability and request signing and will be produced when one or the other is done. The extreme copy may have to wait for request signing.

Miscellaneous Discussion

There was a discussion on what to do with our own version of semaphores necessitated by the broken implementation in Linux. That implementation was fixed in Linux 2.18. Unfortunately, this is not available for RHEL releases. We may have to if-def a patch to use the fixed version or our version depending on the target compilation. The driving issue is that our version has some problems that should be fixed in 2.18.

There was some discussion on extending proxy delegation to work for more than third-party copy. For multi-tenant sites as well as for overall completeness it would be good if proxy servers used certificate delegation for all operations. We agreed that this was a good idea and will investigate on how we could implement it.

XRootD WorkShop

The workshop will be held Novenber 8-10, 2016 at ICEPP, Tokyo. The url is: https://indico.cern.ch/event/523410/

Release announcement - 4.4.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 21 Jul 2016 00:00:00 +0000

Release announcement - 4.4.0

The XRootD 4.4.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.4.0/xrootd-4.4.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.4.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.4.0/docs/ReleaseNotes.txt

Release announcement - 4.3.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 25 Feb 2016 00:00:00 +0000

Release announcement - 4.3.0

The XRootD 4.3.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.3.0/xrootd-4.3.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.3.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.3.0/docs/ReleaseNotes.txt

Release announcement - 4.2.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 03 Sep 2015 00:00:00 +0000

Release announcement - 4.2.3

The XRootD 4.2.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.2.3/xrootd-4.2.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.2.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.2.3/docs/ReleaseNotes.txt

Release announcement - 4.2.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 24 Jul 2015 00:00:00 +0000

Release announcement - 4.2.2

The XRootD 4.2.2 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.2.2/xrootd-4.2.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.2.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.2.2/docs/ReleaseNotes.txt

Release announcement - 4.2.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 01 Jun 2015 00:00:00 +0000

Release announcement - 4.2.1

The XRootD 4.2.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.2.1/xrootd-4.2.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.2.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.2.1/docs/ReleaseNotes.txt

Release announcement - 4.1.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 01 Jun 2015 00:00:00 +0000

Release announcement - 4.1.3

The XRootD 4.1.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.1.3/xrootd-4.1.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.1.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.1.3/docs/ReleaseNotes.txt

Warning for sites using dCache as an xrdcp target and upgrading to 4.x.x

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 01 May 2015 00:00:00 +0000

Warning for sites using dCache as an xrdcp target and upgrading to 4.x.x

The 4.x.x version of xrdcp does not create missing directories when copying into a dCache system. This is a major compatability issue if you have relied on this feature. We are in the process of resolving this issue which may result in issuing new 4.1.3 and 4.2.1 releases.

The current bypass is to use xrdcp-old when copying to dCache as this command is based on a 3.3.6 release and does create mssing directories. Be aware that that this does not affect native XRootD servers.

Release announcement - 4.2.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 29 Apr 2015 00:00:00 +0000

Release announcement - 4.2.0

The XRootD 4.2.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.2.0/xrootd-4.2.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.2.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.2.0/docs/ReleaseNotes.txt

Release announcement - 4.1.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 17 Apr 2015 00:00:00 +0000

Release announcement - 4.1.2

The XRootD 4.1.2 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.1.2/xrootd-4.1.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.1.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.1.2/docs/ReleaseNotes.txt

Release announcement - 4.1.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 04 Dec 2014 00:00:00 +0000

Release announcement - 4.1.1

The XRootD 4.1.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.1.1/xrootd-4.1.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.1.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.1.1/docs/ReleaseNotes.txt

Release announcement - 4.1.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 27 Nov 2014 00:00:00 +0000

Release announcement - 4.1.0

The XRootD 4.1.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.1.0/xrootd-4.1.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.1.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.1.0/docs/ReleaseNotes.txt

Release announcement - 4.0.4

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 22 Oct 2014 00:00:00 +0000

Release announcement - 4.0.4

The XRootD 4.0.4 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.0.4/xrootd-4.0.4.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.0.4/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.0.4/docs/ReleaseNotes.txt

Collaboration Meeting Minutes

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 24 Sep 2014 00:00:00 +0000

XRootD Collaboration Meeting held at CERN 24-September-2014

Attendees:

Dirk Duellmann (CERN)
Andrew Hanushevsky (SLAC)
Gerardo Ganis (CERN)
Lukasz Janyst (CERN)
Andreas Peters (CERN)

Discussion Topics

Release 4.1

Generally, Release 4.0 has become a deployment failure. This is strictly due to the fact that installing R4 required that R3 be de-installed and most people wanted to be able to keep both versions to ease migration. To address this problem significant structural changes are being made to R4.1 to support co-existence of multiple previous major releases. This generally means that plug-in shared libraries will now be versioned as well and that we forbid linking against plug-in libraries, as there really is no reason to do so (i.e. they can only be dynamically loaded).

The rule is that Rn.x also installs the libraries for R(n-1).x for backward compatibility for existing binaries. Hence, release 4.1.x will also install the R3.3.6 libraries (the most recent R3).

Scheduled for October.

ROOT & XRootD

Over the years both packages have become entangled to the extent that people are confused as to what version to ROOT goes with what version of XRootD. The ROOT team tried to solve this via static linking in release 5.34.20 but it didn’t actually work well because XRootD does not have any statics available. Hence, the the agreement was made that the ROOT team packages the appropriate version of XRootD libraries that are necessary to run ROOT and PROOF to allow the ROOT/PROOF client to run without any additional effort. They are still checking to make sure that they only use public headers to avoid any install conflicts.

There is still a desire by many people to know what ROOT version pairs up with what XRootD version. The short table is:

Root 5.34.21 works with Xroot 3.3.6
Root 6.02.00 works with Xroot 4.0.3
Root 6.04.00 works with Xroot 4.1.x

Action Item: Andrew Hanushevsky will create a compatibility table with the ROOT team and post it on the XRootD web site.

XRootD WorkShop

The workshop will be held January 27-29, 2015 at UCSD. The url is: https://indico.cern.ch/event/330212/

The XRootD Workshop’s goal is to focus on XRootD usage not only for HEP experiments but also for communities outside of HEP. This does not replace the Federated Workshop which is likely to be held later in the year. Some relevant topics that will be covered by collaboration members would be:

GSI Security - Gerri Ganis to present what is needed, what should be configured, and what can go wrong.
EOS - Andreas Peters to present where XRootD fits in and how to configure it.
R4 Client - Lukasz Janyst - how to configure the client at the local and site levels.
Caching Proxy - Matevz Tadel - what it does and how to maximize it use.
Ceph - Sebastien Ponce - configuration and usage.

Staff Changes

Lukasz Janyst is scheduled to leave by end of April 2015. CERN will post a new job for XRootD position to take over Lukasz’s responsibilities.

Miscellaneous

Apple will replace OpenSSL and Kerberos with their own APIs and libraries. This directly impacts XRootD and Gerri Ganis will look into how to migrate to the new scheme. Something similar may occur in Linux, if Linux decides to use LibreSSL libraries which are likely to diverge from OpenSSL over time.

Using XRootD with systemd

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 29 Aug 2014 00:00:00 +0000

Using XRootD with SystemD

Starting with version 4.1.0, XRootD’s RPM packaging will provide systemd configuration files handling all XRootD daemons on RHEL >= 7 and Fedora >= 19. Since the design principles of systemd differ significantly from those of SysV init, the way of handling the daemon start up changes quite a bit as well.

All of the XRootD’s systemd configuration files are templates, meaning that they can be used to handle multiple instances of each daemon. Each template looks for an XRootD configuration file in /etc/xrootd/xrootd-XXXXX.cfg, where XXXXX is the instance name.

In order to start/enable xrootd daemon instance called test1, you need to do the following:

# check if you have the corresponding configuration file
[root@centos7-srv1 ~]# ls -l /etc/xrootd/xrootd-test1.cfg 
-rw-r--r--. 1 root root 91 Aug 27 12:15 /etc/xrootd/xrootd-test1.cfg

# start the instance
[root@centos7-srv1 ~]# systemctl start xrootd@test1.service

# check the status
[root@centos7-srv1 ~]# systemctl status xrootd@test1.service
xrootd@test1.service - XRootD xrootd deamon instance test1
   Loaded: loaded (/etc/systemd/system/xrootd@.service; disabled)
   Active: active (running) since Thu 2014-08-28 12:51:11 CEST; 5s ago
     Docs: man:xrootd(8)
           http://xrootd.org/docs.html
 Main PID: 11624 (xrootd)
   CGroup: /system.slice/system-xrootd.slice/xrootd@test1.service
           └─11624 /usr/bin/xrootd -l /var/log/xrootd/xrootd.log -c /etc/xrootd/xrootd-test1.cfg -k fifo -s /var/run/xrootd/xrootd-test1.pid -n test1

Aug 28 10:51:11 centos7-srv1 systemd[1]: Starting XRootD xrootd deamon instance test1...
Aug 28 10:51:11 centos7-srv1 systemd[1]: Started XRootD xrootd deamon instance test1.

# enable start up on boot
[root@centos7-srv1 ~]# systemctl enable xrootd@test1.service
ln -s '/etc/systemd/system/xrootd@.service' '/etc/systemd/system/multi-user.target.requires/xrootd@test1.service'

In order to stop/disable the instance, run:

# stop the instance
[root@centos7-srv1 ~]# systemctl stop xrootd@test1.service

# check the status
[root@centos7-srv1 ~]# systemctl status xrootd@test1.service
xrootd@test1.service - XRootD xrootd deamon instance test1
   Loaded: loaded (/etc/systemd/system/xrootd@.service; enabled)
   Active: inactive (dead) since Thu 2014-08-28 12:53:31 CEST; 3s ago
     Docs: man:xrootd(8)
           http://xrootd.org/docs.html
 Main PID: 11624 (code=killed, signal=TERM)

Aug 28 10:51:11 centos7-srv1 systemd[1]: Starting XRootD xrootd deamon instance test1...
Aug 28 10:51:11 centos7-srv1 systemd[1]: Started XRootD xrootd deamon instance test1.
Aug 28 10:53:31 centos7-srv1 systemd[1]: Stopping XRootD xrootd deamon instance test1...
Aug 28 10:53:31 centos7-srv1 systemd[1]: Stopped XRootD xrootd deamon instance test1.

# disable start up on boot
[root@centos7-srv1 ~]# systemctl disable xrootd@test1.service
rm '/etc/systemd/system/multi-user.target.requires/xrootd@test1.service'

The same can be done for cmsd, frm_xfrd and frm_purged daemons as well.

Release announcement - 4.0.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 31 Jul 2014 00:00:00 +0000

Release announcement - 4.0.3

The XRootD 4.0.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.0.3/xrootd-4.0.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.0.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.0.3/docs/ReleaseNotes.txt

Release announcement - 4.0.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 17 Jul 2014 00:00:00 +0000

Release announcement - 4.0.2

The XRootD 4.0.2 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.0.2/xrootd-4.0.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.0.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.0.2/docs/ReleaseNotes.txt

Release announcement - 4.0.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 11 Jul 2014 00:00:00 +0000

Release announcement - 4.0.1

The XRootD 4.0.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.0.1/xrootd-4.0.1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.0.1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.0.1/docs/ReleaseNotes.txt

XRootD-Python release announcement - 0.2.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 17 Jun 2014 00:00:00 +0000

XRootD-Python release announcement - 0.2.0

The XRootD-Python 0.2.0 release has been tagged. Please follow the links below for the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

RPMs: http://xrootd.cern.ch/sw/releases/python/0.2.0/rpms/
Release Notes: https://github.com/xrootd/xrootd-python/blob/v0.2.0/docs/ReleaseNotes.txt

Collaboration Meeting Minutes

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 12 Jun 2014 00:00:00 +0000

XRootD Collaboration Meeting held at CERN 12-June-2014

Attendees:

Dirk Duellmann (CERN)
Andrew Hanushevsky (SLAC)
Lukasz Janyst (CERN)
Alja Mrak-Tadel (UCSD)
Andreas Peters (CERN)
Matevz Tadel (UCSD)

Discussion Topics

Release 4.0.1

This is the first bug-fix release for Release 4. We are planning on issuing a bug fix in 3 to 4 weeks. As of now only two minor bugs have been found and both have bypasses.

Release 4.1.0

This is the next feature release for Release 4. It will include:

full-featured IPv6/IPv4 handling (the current release assumes dual-stacked hosts)
parallel 3rd party copy
caching proxy service enhancements (e.g. delayed client instantiation and enhanced purging policies).

It is scheduled for September.

EOS in EPEL

This requires supplying public header versions of the private headers used by EOS. We plan to use a wrapping technique that essentially hides the private implementation so that we are not boxed in regarding changing ostensibly private code. This may be included in 4.1.0, or earlier, depending on the EOS schedule.

The xrootd.org Domain Name

The domain name registration and DNS entry ownership will switch from Dirk to Andrew.

XRoorD Workshop

We are tentatively planning to hold a three day workshop in San Diego the second or third week of January, 2015. The focus of the workshop is to teach people about XRootD features, why you would use a particular feature, how to configure and deploy the feature, tuning options, debugging deployment issues. For any particular feature a person should have the capability to do a full deployment. The initial list we came up with includes:

Cluster & Server configurations (standard and proxy)
Caching Proxy deployment
Client plugin and tuning options
Deploying IPv6
Handling public/private network setups
EOS deployment
Monitoring Collector deployment
Using monitoring data to discover site issues
Enabling and using remote debugging facilities

Release announcement - 4.0.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 05 Jun 2014 00:00:00 +0000

Release announcement - 4.0.0

The XRootD 4.0.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v4.0.0/xrootd-4.0.0.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.0.0/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.0.0/docs/ReleaseNotes.txt

Release candidate announcement - 4.0.0-rc3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 21 May 2014 00:00:00 +0000

Release candidate announcement - 4.0.0-rc3

The XRootD 4.0.0 release candidate 3 has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the testing yum repositories.

Source: http://xrootd.org/download/v4.0.0-rc3/xrootd-4.0.0-rc3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.0.0-rc3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.0.0-rc3/docs/ReleaseNotes.txt

Release candidate announcement - 4.0.0-rc2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 14 May 2014 00:00:00 +0000

Release candidate announcement - 4.0.0-rc2

The XRootD 4.0.0 release candidate 2 has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the testing yum repositories.

Source: http://xrootd.org/download/v4.0.0-rc2/xrootd-4.0.0-rc2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.0.0-rc2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.0.0-rc2/docs/ReleaseNotes.txt

Release candidate announcement - 4.0.0-rc1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 02 Apr 2014 00:00:00 +0000

Release candidate announcement - 4.0.0-rc1

The XRootD 4.0.0 release candidate 1 has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the testing yum repositories, however, the packages have been renamed to xrootd4, so they need to be explicitly installed.

Source: http://xrootd.org/download/v4.0.0-rc1/xrootd-4.0.0-rc1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/4.0.0-rc1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v4.0.0-rc1/docs/ReleaseNotes.txt

Note: Corresponding python packages will follow later this week.

Release announcement - 3.3.6

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 16 Jan 2014 00:00:00 +0000

Release announcement - 3.3.6

The XRootD 3.3.6 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v3.3.6/xrootd-3.3.6.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/3.3.6/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v3.3.6/docs/ReleaseNotes.txt

Release announcement - 3.3.5

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 29 Nov 2013 00:00:00 +0000

Release announcement - 3.3.5

The XRootD 3.3.5 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs been pushed to the stable yum repositories.

Source: http://xrootd.org/download/v3.3.5/xrootd-3.3.5.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/3.3.5/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v3.3.5/docs/ReleaseNotes.txt

The release contains a new version of the python bindings as well:

RPMs: http://xrootd.cern.ch/sw/releases/python/0.1.3/
Release Notes: https://github.com/xrootd/xrootd-python/blob/v0.1.3/docs/ReleaseNotes.txt

Collaboration Meeting Minutes

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 29 Oct 2013 00:00:00 +0000

XRootD Collaboration Meeting held at CERN 29-October-2013

Attendees:

Douglas Benjamin (Duke)
Dirk Duellmann (CERN)
Gerardo Ganis (CERN)
Andrew Hanushevsky (SLAC)
Lukasz Janyst (CERN)
Andreas Peters (CERN)
Fons Rademakers (CERN)

Discussion Topics

Release 3.3.4

No RPM compatibility issues have been found. It provides a smooth installation transition.

Release 3.3.5

We are planning another patch release. Minimally, this will contain:

Patch for XrdSysIOEvents to prevent random (negligible in practice) failures during forking,
Removal of XrdSysIOEvents.hh from the public headers as it was mistakenly included and would never compile as the corresponding “.icc” were not released,
Increase the allowable site name length to 63 characters (it’s 15 now).
Possible solution to SL6 memory allocation problems (see topic below).

SL6 Memory Allocation Issues

Due to the change in glibc malloc in SL6, heavily threaded programs may see a dramatic increase in virtual memory use (not real memory). This can cause batch job cancellation on many sites and causes severe problems for PROOF jobs on nodes with limited swap space.

The immediate solution is to set the special envar MALLOC_ARENA_MAX to a value of 1 for client jobs and 4 for the servers. This must be set before the program starts. This is not particularly practical in many cases and requires a consultation every time someone experiences this problem.

The long term solution is to switch to a better memory allocator. Two are available: tcmalloc (Google) and jemalloc (Facebook). Of the two, it appears the jemalloc is superior. Unfortunately, neither of these are natively installed as part of the Linux distribution and require a separate RPM install. Furthermore, it is difficult, to link the special malloc library ahead of glibc and requires that it be set in the LD_PRELOAD envar prior to running a program.

Fortunately, Atlas makes tcmalloc the default for Athena jobs and CMS makes jemalloc the default for CMSW jobs. That leaves a swath of others exposed.

The action items we are undertaking to address this issue:

Gerri will notify Alice that their framework should switch to an alternate malloc for their root jobs.
Gerri will switch PROOF to use jemalloc in the 5.34.11 release for November 1st.
Fons will document how the root framework can be configured to use an alternate allocator during the build process and use preload with an RPM install.
Lukasz will change the sysinit script to attempt a preload for jemalloc or tcmalloc (depending on which is installed) during server start-up and issue a warning if neither is found (on SLC6).
Lukasz will investigate whether or not a new allocator can be linked with the client instead of using a preload mechanism.
Dirk will follow up to make sure that jemalloc and tcmalloc libraries are available in CERN’s cvmfs.

Release 4.0.0

We are tentatively targeting a release candidate no later than the middle of January 2014. Prior to that time we are considering making a preview RPM available via the xrootd.org site. The preview RPM may have features added to it prior to actual release candidate availability.

This is a major change in the XRootD package and is not binary compatible with previous releases. This isn’t a problem client-side but plug-in writers will need to recompile server-side.

Because of backward compatibility issues we are constrained how we release the package via EPEL. Currently, our plan is to release the package as xrootd4 (as opposed to xrootd) and only rename the package back to its original name in EPEL 7 which, in itself, is a non-backward compatible release. Some major changes people will see (though, in fact, transparent) are:

The new XRootD client replaces the old client (the old client will be supported until 2016).
The Posix interface and xrdcp will switch to using the new client.
Root’s TXNetFile will switch to using the new client.
Full IPV6 support.

Gerri will default loading the new TXNetFile (in compatibility mode) for ROOT 5.34.12 slated for the end of November 2013.
Andy will follow up with Brian Bockelman (again) to see if the Throttle library can be included.
Andy will follow up with Matevz Tadel to find out the state of the caching proxy server relative to release 4.0.0.
Dirk will follow up with Markus to see if the http plug-in can be either included in the XRootD base package or as an RPM install available via the xrootd.org site.

Do You Need To Upgrade?

That was the question posed by Doug Benjamin. In fact, he pointed out that it is very difficult for an administrator to decide. Our solution to this issue is to place a link next to each release on xrootd.org labeled something like “Upgrade?” which will point to a page describing the changes that may be of interest in various categories (e.g. performance, federation, etc.). Andy will be responsible for creating the page after Lukasz sends him the release notes for a particular release. So, there may be a couple of days delay between the release being posted and the upgrade page being available.

Miscellaneous Action Items

Gerri will follow up with Marko Cattaneo about Valgrind issues with respect to gsi authentication.
Gerri will allow CGI information to be passed to the security plugins to specify an alternate location for the certificate file (gsi) or the ticket file (krb5).
Fons will register xroot as an official protocol equivalent to root protocol in the Root vector table.
Fons will add the special redirect error and GetNewURL() method to the Root file plug-in interface for the November preview release of ROOT 6.

Release announcement - 3.3.4

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 11 Oct 2013 00:00:00 +0000

Release announcement - 3.3.4

The XRootD 3.3.4 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs been pushed to the yum repositories.

Source: http://xrootd.org/download/v3.3.4/xrootd-3.3.4.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/3.3.4/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v3.3.4/docs/ReleaseNotes.txt

Release announcement - 3.3.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 24 Jul 2013 00:00:00 +0000

Release announcement - 3.3.3

The XRootD 3.3.3 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs been pushed to the yum repositories.

Source: http://xrootd.org/download/v3.3.3/xrootd-3.3.3.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/3.3.3/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v3.3.3/docs/ReleaseNotes.txt

The release contains a new version of the python bindings as well:

RPMs: http://xrootd.cern.ch/sw/releases/python/0.1.2/
Documentation: http://xrootd.org/doc/python/xrootd-python-0.1.2/

Release candidate announcement - 3.3.3-rc2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 12 Jul 2013 00:00:00 +0000

Release candidate announcement - 3.3.3-rc2

The XRootD 3.3.3 release candidate 2 has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the testing yum repositories.

Source: http://xrootd.org/download/v3.3.3-rc2/xrootd-3.3.3-rc2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/3.3.3-rc2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v3.3.3-rc2/docs/ReleaseNotes.txt

Note: The RPM package layout has been changed in order to resolve conflicts with EPEL

Release candidate announcement - 3.3.3-rc1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 12 Jun 2013 00:00:00 +0000

Release candidate announcement - 3.3.3-rc1

The XRootD 3.3.3 release candidate 1 has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the testing yum repositories.

Source: http://xrootd.org/download/v3.3.3-rc1/xrootd-3.3.3-rc1.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/3.3.3-rc1/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v3.3.3-rc1/docs/ReleaseNotes.txt

Note: The RPM package layout has been changed in order to resolve conflicts with EPEL

Release announcement - 3.3.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 26 Apr 2013 00:00:00 +0000

Release announcement - 3.3.2

The XRootD 3.3.2 bugfix release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs exceptionally have not been pushed to the yum repositories, due to some deployments issues related to the package names conflicting with EPEL.

Source: http://xrootd.org/download/v3.3.2/xrootd-3.3.2.tar.gz
RPMs: http://xrootd.cern.ch/sw/releases/3.3.2/rpms/
Release Notes: https://github.com/xrootd/xrootd/blob/v3.3.2/docs/ReleaseNotes.txt

Please note, that we now also provide experimental python bindings:

RPMs: http://xrootd.cern.ch/sw/releases/python/0.1.0/
Documentation: http://xrootd.org/doc/python/xrootd-python-0.1.0/

Collaboration Meeting Minutes

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 20 Mar 2013 00:00:00 +0000

XRootD Collaboration Meeting held at CERN 20-March-2013

Attendees:

Dirk Duellmann (CERN)
Gerardo Ganis (CERN)
Andrew Hanushevsky (SLAC)
Lukasz Janyst (CERN)
Andreas Peters (CERN)
Justin Salmon (CERN)

Discussion Topics

Releases

The 3.3.1 release was two months late, so we should rethink the release schedule. Every six months would seem to be more realistic.

The 3.3.2 bug fix release expected 1st week of April
The 3.3.3 release, no earlier than June unless we find serious problems
The 4.0.0 release expected mid-July.

We generally support only the current minor release. We generally support the last minor release for one year after we produce a major release.

Next major release

The following items are planned for the 4.0.0 major release:

IPV6
Protocol bridge interface
Readv passthrough (Brian Bockelman).
I/O throttling plug-in (if we get it from Brian Bockelman)
The new client interface will become stable if ready
- XrdPosix using the new client
- TXNetFile using the new client
- xrdcopy will be renamed to xrdcp and the current xrdcp replaces xrdcpold.
- Perhaps a wrapper or command line option for xrdcp to get previous version.

EPEL conformance

EPEL has created the RPMs for 3.3.1 and they are in the EPEL testing repository for EPEL5, EPEL6 and recent Fedora. They should be available in the EPEL stable repos soon.

The git repository

We are migrating to GitHub for source in the next few days and bug tracking before CERN moves to Jira.

VOMS plug-in

The updated VOMS RPM should be available by March 23rd. It is going to be separately released because it depends on the external VOMS library. It should go to OSG for US and EPEL for EU. We should touch bases with David Smith. This RPM will only available for 3.3.x.

Other items

Python bindings will be ready for 3.3.2. They work with Python 2.4 and up and be distributed as a separate package. We plan to withdraw the Perl bindings.
C++11 will be enabled when gcc 4.7 packages become available until then we will up the warning level and include server and client compilations to catch and fix problems.
Exploring client-side plug-in to enable novel data access mechanisms.

Release announcement - 3.3.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 06 Mar 2013 00:00:00 +0000

Release announcement - 3.3.1

The XRootD 3.3.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Note: This release restores binary compatibility with 3.2.x that 3.3.0 has broken.

Warning for sites using PROOF and ROOT upgrading to 3.3.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 25 Feb 2013 00:00:00 +0000

Warning for sites using PROOF upgrading to 3.3.0

We have encountered a binary incompatibility issue in one of the private xrootd classes used by PROOF and ROOT which may applications using 3.3.0 to crash unless they are recompiled. We do not advise recompiling any applications and to wait until this issue is resolved in xrootd 3.3.1 which is currently being tested. Be aware that if you recompile for 3.3.0 you will need to recompile again for 3.3.1.

Release announcement - 3.3.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 18 Feb 2013 00:00:00 +0000

Release announcement - 3.3.0

The XRootD 3.3.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Release candidate announcement - 3.3.0-rc3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 06 Feb 2013 00:00:00 +0000

Release candidate announcement - 3.3.0-rc3

The XRootD 3.3.0 release candidate 3 has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the testing yum repositories.

Release candidate announcement - 3.3.0-rc2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 18 Dec 2012 00:00:00 +0000

Release candidate announcement - 3.3.0-rc2

The XRootD 3.3.0 release candidate 2 has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the testing yum repositories.

Release announcement - 3.2.7

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 11 Dec 2012 00:00:00 +0000

Release announcement - 3.2.7

The XRootD 3.2.7 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Release candidate announcement - 3.3.0-rc1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 08 Nov 2012 00:00:00 +0000

Release candidate announcement - 3.3.0-rc1

The XRootD 3.3.0 release candidate 1 has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the testing yum repositories.

Release announcement - 3.2.6

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 05 Nov 2012 00:00:00 +0000

Release announcement - 3.2.6

The XRootD 3.2.6 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Collaboration Meeting Minutes (24-October-2012)

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 24 Oct 2012 00:00:00 +0000

XRootD Collaboration Meeting held at CERN 24-October-2012

Attendees:

Dirk Duellmann (CERN)
Gerardo Ganis (CERN)
Andrew Hanushevsky (SLAC)
Lukasz Janyst (CERN)
Danila Oleynik (JINR)
Andreas Peters (CERN)
Justin Salmon (CERN)

Discussion Topics

Releases

We are now 3.2.5 next 3.2.6 rc-1 patch release is schedule for Wednesday, October 31st. All patch submitters must supply their list of patches that should be included in 3.2.6 prior to this time. There is still one outstanding patch (Certificate Cache Serialization) that is still in testing but should be available prior to this date. Fortunately, all of them for this cycle were at this meeting.

Relative to the root release, root 5.34.02 (currently out) and subsequent patch releases will still use the old client. Root 6.0.0 candidate release will be out 10/30 with a production release scheduled for 12/2. This happily coincides with the XRootD 3.3.0 release schedule.

Next minor release

The next minor release will be 3.3.0. There are approximately 700 patches outstanding for this release (about 450 related to the new client). The release candidate, 3.3.0-rc1 is scheduled for Friday, November 2nd. The new client will be available as code in development in this release. Generally, everything that is in git head will be in this release. Production release is scheduled for December 2nd.

The three most significant user changes in 3.3.0 are:

xrdcpy will be renamed to xrdcp with xrdcp becoming xrdcpold. The new xrdcp adopts the backwards compatible but a more user-friendly command line interface that is used by all subsequent versions of xrdcp.
Third-party copy support as the new xrdcp interface includes that.
The XRootD protocol will be available as a plug-in shared library that can be used by xproofd allowing the root team to retire the rootd daemon.

Next major release

The next major release, 4.0.0 is scheduled for the first part of March, 2013. It will minimally include:

Full production version of the new client,
xrdcopy (new client) will replace xrdcp
XrdPosix will use the new client (this means that the proxy server and FUSE will use the new client)
IPV6 (will require plug-in writers to recompile their code)
The readv pass-through enhancement supplied by CMS

Some significant user changes are:

The xrdfs command replaces the xrd command to provide full access to XRootD features using the new client. The new interface is much more user-friendly.
The new client-based xrdcopy replaces xrdcp but the interface does not change,
While the new client can co-exist with the old client, the new client will become the default for the root plug-in. However, the old client can be selected by either an envar setting or a root.rc directive.
The two year support life-time clock for the old client starts ticking.

EPEL conformance

Generally, all EPEL related concerns have been addressed for DPM, ROOT, EOS, and CMS. We now have a list of publicly supported API and a support statement on how those API will be treated across releases. This has been tentatively approved by EPEL This, we can be in compliance starting at release 3.3.0.

Action Item: LJ will touch bases with Doug Strain (OSG) on 3.3.0 for EPEL compliance and keep in touch with Mattias Ellert (the EPEL coordinator) to make sure we are on track.

The git repository

The new client is in github. However, the repositories will be merged for 3.3.0 but ABI compatibility will not be guaranteed for the new client until 4.0.0. The collaboration expressed passive interest (most neutral and 3 positive) to moving the repository to github. The positives are that better tools are available in github and that the project will receive more visibility. The move will occur {+|-} two weeks around 4.0.0.

Action Item: LJ will research the security implications of shared access (i.e. controlling writes) in github.

Automated testing

Justin Salmon finished the automatic development framework and developed some functionality tests which include:

GSI, Kerberos, frm, meta-manager
Automatic cluster instantiations
Copy back/forth, stats
Fuse test for meta operations

Additional tests are needed, especially in testing performance retrogression. Some tests came from Doug Strain (OSG). In fact, we will encourage OSG involvement with the anticipation that they will adopt the automated test framework. In any case, we need more test programs from participants.

Action Item: ABH will ask Wei Yang and Doug Benjamin for test programs

Action Item: ABH will add Justin to xrootd-dev and obtains a SLAC account for him.

Software development for 6 months

While the following list seems short, given all the activity in producing the 4.0.0 release it should come as no surprise. So far we have:

Parallel writes in new client.
Third party copy using a delegated proxy certificate.

Release announcement - 3.2.5

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 04 Oct 2012 00:00:00 +0000

Release announcement - 3.2.5

The XRootD 3.2.5 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Release announcement - 3.2.4

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 10 Sep 2012 00:00:00 +0000

Release announcement - 3.2.4

The XRootD 3.2.4 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Release announcement - 3.2.3

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 04 Sep 2012 00:00:00 +0000

Release announcement - 3.2.3

The XRootD 3.2.3 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Release announcement - 3.2.2

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 18 Jun 2012 00:00:00 +0000

Release announcement - 3.2.2

The XRootD 3.2.2 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Release Management Meeting Minutes (15-June-2012)

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 15 Jun 2012 00:00:00 +0000

Release Management Meeting 15-June-2012

Attendees:

Gerri Ganis (CERN)
Andrew Hanushevsky (SLAC)
Lukasz Janyst (CERN)

We discussed the release schedule for the next 9 months or so. The summary of the discussion:

Patch release 3.2.2 is scheduled to be available by June-20-2012.
Minor release 3.3.0 should be available by September-5-2012. Hoever, given the number of meetings scheduled for September, it may slip to the end of the month. Included in this release:
- Refactoring of shared libraries and include files for full EPEL compatability. Plugin writers should see no operational changes. However, not all include files will be available. Specifically, we will now only install include files required for public interfaces and commonly utility classes.
- Changes to all source file to indicate that the code is now available under the GNU Lesser General Public License (LGPL). See http://www.gnu.org/licenses/ for details.
- Internal version checking run-time subsystem. This subsystem checks that all plug-ins as well as cross library linkages are compatible with each other. Any attempt to use incompatible code will cause the program to issue a warning, advise which version should have been used to compile the code, and exit.
- The new xroot client will become available in beta form. The new client includes numerous performance and stability enhancements.
Major release 4.0.0 should be available by March-1-2013. This release will require that all plugin writers recompile their code. This version will minimally include full IPV6 support. Because network addresses are, in many cases, passed across plugin interfaces a recompilation provides the opportunity to verify that plugins are able to accept IPV6 addresses. Our current stand is to replace the use of sockaddr with a new class, XrdNetAddr, that provides format independent information about an IP address. Plugin writers that wish to make minimal modifications to their code can use the following code:

Originally:
```
extern "C" myplugin( ..., ..., sockaddr *sockP, ..., ... )
          { plugin body }
```
Relese 4.0.0:
```
extern "C" myplugin( ..., ..., XrdNetAddr *netaP, ..., ... )                                               
        {struct sockaddr *sockP = netaP->Sockaddr();
         plugin body
        }
```
On the other hand, we expect plugin writers to fully exploit the features of XrdNetAddr as it provides a format independent way of handling all types of network addresses.
We have revised the code release schedule to be more practical. Release rules are:
- Patch releases will be released as soon as demand requires. We do not expect this to be more frequent than once a month and typically quarterly.
- Minor releases (i.e., those where the middle digit changes) will be released no more than every four months and typically only twice a year. Target dates are March, optionally in June, and one in October.
- We have not decided on the schedule of major releases (i.e., those where the first digit changes) but will likely be no more frequent every two years.
We now have formulated a policy on binary compatibility. The policy is:
- We guarantee that all public class interfaces are binary compatible for patch as well as minor releases.
- Public interfaces are defined as those interfaces for which we have installed include files in “/usr/include/xrootd” and whose implementation is located in “libXrdUtils.so”.
- The shared library implementing public interfaces will not change versions across minor and patch releases to allow plug-ins to function without re-linking or re-compilation. Version information for other libraries may change across minor releases.
- Use of classes not considered public is discouraged and we will make no attempt to keep binary compatibility for those classes. However, we will make a best effort to indicate when we have broken compatibility in the release notes.

Release announcement - 3.2.1

xrootd-dev@slac.stanford.edu (XRootD Developers) — Sat, 12 May 2012 00:00:00 +0000

Release announcement - 3.2.1

The XRootD 3.2.1 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Warning for sites upgrading to 3.2.x

xrootd-dev@slac.stanford.edu (XRootD Developers) — Fri, 11 May 2012 00:00:00 +0000

Warning for sites upgrading to 3.2.x

There was a bug found in the FRM mechanism, such that attempts to stage-in missing files upon open() or via xrdstagetool will hang. Sites using the frm for real-time staging should stick with the 3.1.1 release.

Release announcement - 3.2.0

xrootd-dev@slac.stanford.edu (XRootD Developers) — Tue, 24 Apr 2012 00:00:00 +0000

Release announcement - 3.2.0

The XRootD 3.2.0 release has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the stable yum repositories.

Warning for sites upgrading to 3.1.0 or higher

xrootd-dev@slac.stanford.edu (XRootD Developers) — Thu, 19 Apr 2012 00:00:00 +0000

Warning for sites upgrading to 3.1.0 or higher

XRootD releases 3.1.0 or higher use extended attributes to record special meta-data information. If your file system does not allow extended attribute (see note 2) and you are using multiple partitions, all new file creation requests will place the file data in the name space partition. This will likely fill up this partition and make space recovery much more difficult unless you are using extended architecture (XA) space partitions (see note 3).
The only way we have discovered to make sure that your file systems support extended attributes is to specify that you want support in /etc/fstab by addning the user_xattr option as follows:
```
/dev/partition /mount fstype defaults,user_xattr 1 2
```
Make the appropriate substitutions for partition (e.g hda3), /mount, and fstype (e.g. ext3, ext4, xfs, etc). After you make the change your can remount the file system as root by issuing:
```
 mount -o remount /mount
```
If you are running with multiple partitions and use the oss.cache directive without the xa option, (e.g. oss.cache public /data1) you are running with non-XA spaces. Non-XA spaces severely limit how space is managed by xrootd. You should strongly consider either migrating to an XA-space or adding the oss.runmodeold directive to your configuration file in order to run in backward compatibility mode. Failure to do so before restarting a new version of xrootd will make future conversions more difficult.
Please read the “Migrating to Extended Attribute Name and Data Spaces” guide: http://www.xrootd.org/doc/prod/frm_migr.htm#_Toc284350518 before you run servers using release 3.1.0 or higher and if any of the following are true:
- Your configuration file contains an oss.cache directive,
- You have specified the migrate, purge, or stage option on any all.export directive, or
- You have pinned or memory mapped any file.
If you do use a non-XA space we strongly recommend that you convert to an XA space as soon as possible. While not specifically noted in the migration guide, you must change all oss.cache directives to oss.space directives after you do a space conversion.

Release candidate announcement - 3.2.0-rc1 (26-March-2012)

xrootd-dev@slac.stanford.edu (XRootD Developers) — Mon, 26 Mar 2012 00:00:00 +0000

Release candidate announcement - 3.2.0-rc1 (26-March-2012)

The XRootD 3.2.0 release candidate 1 has been tagged. Please follow the links below for the source and the RPMs. Please note that the RPMs have been pushed to the testing yum repositories.

Collaboration Meeting Minutes (14-March-2012)

xrootd-dev@slac.stanford.edu (XRootD Developers) — Wed, 14 Mar 2012 00:00:00 +0000

XRootD Collaboration Meeting held at CERN 14-March-2012

Attendees:

Doug Benjamin (Duke)
Dirk Duellmann (CERN)
Gerardo Ganis (CERN)
Andrew Hanushevsky (SLAC)
Lukasz Janyst (CERN)
Danila Oleynik (JINR)
Andreas Peters (CERN)
Artem Petrosyan (JINR)

Discussion Topics (No particular Order)

New Client status

Mostly done but some functions are not yet implemented, more work on proper timeout handling is needed and the client relies on the use of root’s TTree Cache.
We discussed some pressing requirements desired by all of the experiments, especially in a federated environment. We decided that the priory would be:
- Timeouts for single source reads with a switch to another server (about 3 months) and
- Multi-source random reads with single source timeouts driving it (about 6 months).
There was a lot of discussion on how to transition to the new client. Specifically, just give people a deadline to move, support the old client indefinitely (only serious bugs fixed), provide an old-style client wrapper to the new client.
There was some agreement but no consensus. It’s still not clear how difficult it would be to devise an old wrapper for the new client to ease transition. With no wrapper, we would set a 2 year timeline to switch to the new client when it is released. We would likely support the old client for two years after that with no upgrades and only fault conditions fixed. Everyone thought this was reasonable but yet fully flushed out to commit to this scenario.

xrdcp

As part of the move to the new client, the front-end to xrdcp is completely revised in a way that can be used by the old client and the new one. This provides the identical user interface regardless of which client is being used (deemed a requirement).
Creating a new interface that uses common interface standards proved to be challenging as the old interface used some esoteric conventions. The solution was to support the esoteric as legacy options but otherwise just document the “standard” option list.
One conflict arose that was not clear how to fix and that was use of the -force option to allow the client to try the copy for about a week before giving up. We decided it wasn’t worth keeping but we should check.
Action Item: AH will e-mail Costin about whether the -force is still needed.

Versioning

Once we switched to using shared libraries, corresponding to EPEL guideline, people not using RPMS have had problems mixing and matching executables with the correct library versions.
We decided that the real problem was that we didn’t have a fool-proof mechanism to determine when a shared library evolves in a binary incompatible way.
Action Item: LJ will bump the so name for every master release. No binary incompatible changes will be accepted to patch releases.

Git hub

There was a long discussion of whether to move the project repository from SLAC to GitHub. It would raise visibility but that brings its own set of issues. The new client is already there. We decided to continue internal discussions at each of our respective sites to determine the ups and downs of such a move.

Monitoring

Discussion of how work would be split between JINR and UCSD. The approach is that, by large, JINR will focus on summary monitoring with some detail traffic included (e.g. file copy records). UCSD would concentrate on detailed monitoring.
There is some overlap and it’s not clear how we handle that. Specifically, we need plug-ins for rending agents (i.e., ganglia, Mona Lisa, etc) and plug-ins for monitoring record storage (i.e., Cassandra, root, etc). What was recognized is that for this to work smoothly, a common record format must be developed for each set of plug-ins.
Action Item: AH will ask Ian Bird for standard monitoring record format document circulating in the WLCG. As we are moving in the direction discussed at the Lyon Federation Workshop, it would be good to use the format if possible.

Third Party Copy Status

The server-side of 3rd party copy works and we need xrdcp to provide the correct cgi information to trigger the copy. This is tied up with the new xrdcp front-end (see above). It should be done within a month.
The interface is http friendly so it can be carried forward to http servers as well.
While there was a lot on interest from Atlas and CMS, that has waned with only Alice and CMS/Castor expressing great interest. So, we move forward.

Licensing

We decided that we would move our license to an LGPL model on the next release, subject to the action items below.
Action Item: LJ will provide the license text (done).
Action Item: AH will consult with SLAC lawyers to get this moving to completion.

Logging

This issue surfaced once again, triggered by RAL’s interest in deploying xrootd for a large project. We decided to address the concerns by:
Action Item: AH will put in support for the logrotate command for sites wishing to use this mechanism as opposed to the native mechanism.
Action Item: AH will factor in the desire to have machine parse able logs vs. human readable logs. This is always a problem with tensions between large sites and small sites. It may be possible to include key-value information as an option. This is clearly tied into the larger project of redoing log messaging.

RPM’s in Epel & OSG

We’ve always had historical tensions on where and how distributes RPM’s. Some rely on the EPEL repository while others on the OSG repository which is identical to the official RPM’s are hosted at SLAC.
To make things go smoother, LJ got the appropriate accounts to create fedora builds and make RPM’s compatible with EPEL. This should be done in 2-3 weeks. This will likely remove OSG out of the loop. However, OSG does the DSI plug-in packaging. So, this may be a stumbling block.
Action Item: LJ should become EPEL package co-owner to speed package deployment.
Action Item: AP will provide the DSI plug-in for RH6 (OSG does not) and as a separate RPM. This will provide a smooth transition.

Python vs Perl

Recently, a user got an unsupported Python binding to the xrootd API and implemented site critical services with it (never mind that was bad form). In the latest release, that binding no longer works because we moved some API’s to different libraries to solve other problems. Now, we are getting requests to resolve this problem. We have a Perl binding and feel that we cannot continue to support both. The group preferred the Python bindings.
Action Item: AH will mail to xrootd-l asking which one we should support. Ask who uses what and indicate we can only support one.

IPV6

While we see the world moving to IPV6 we see that movement so slow that this appears to not be a critical issue at this time. However, we decided to start putting in the basic blocks to make a smooth transition.
Action Item: AH will create a new IPV4/6 XrdNetAddress class and integrate it in the current code (it’s a significant effort). This will provide a firm foundation for LJ to do the development. Our time-line for full IPV6 support is 3Q 2013.

Simple Example Configurations

Many people have requested simplified templates for configuration files dealing with a simple site.
Action Item: DB will head this up.

Xrootd Protocol Plugin

GG requested that an so version of the xrootd protocol be created so that he could use it as a plug-in. We agreed that we would build an so version of the protocol as this is pretty trivial to do.

Miscellaneous

Action Item: LJ will create an automatic monthly telecom reminder e-mail. We will have a telecom only if there something we need to discuss as a group.

Next Meeting

Next collaboration meeting will be held at CERN during the week of June 11th (in conjunction with Atlas software week). LJ will get a phone bridge going so other can remotely attend.