1 / 4

CernVM -FS Version Overview

CernVM -FS Version Overview. Components Client Stratum 1 Software (replication tools) Runs at CERN, RAL, FNAL, BNL, ASGC Stratum 0 Software ( cvmfs server) Runs at CERN for WLCG repositories Installations at GridPP , OSG, EGI planned Compatibility

pegeen
Télécharger la présentation

CernVM -FS Version Overview

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CernVM-FS Version Overview • Components • Client • Stratum 1 Software (replication tools)Runs at CERN, RAL, FNAL, BNL, ASGC • Stratum 0 Software (cvmfs server)Runs at CERN for WLCG repositoriesInstallations at GridPP, OSG, EGI planned • Compatibility • Need to upgrade all clients and stratum 1s before stratum 0s can be updated

  2. CernVM-FS 2.0 / 2.1 Branches • CernVM-FS 2.0 • The 2.0 branch started in 2009 as a prototype • Served us well on the client side, although there are some known “won’t fix” bugs • Latency problems at Stratum 1s • Serious risks on the Stratum 0: number of inodes, backups, large files • Large files in the repositories are an issue on grid sites • Platforms: SL5/6 (Client, Stratum 1), SL5 only (Stratum 0) • CernVM-FS 2.1 • Rewrite based on the experience and feature wishes from the 2.0 branch • Platforms: SL5/6, SuSE, Fedora, Ubuntu, Mac OS X (client only) Intel, ARM • New features: shared local cache, NFS support, hotpatching, file system snapshots, file chunking, … • Some of the features require the full chain to be on 2.1 branch

  3. CernVM-FS Deployment Roadmap • CernVM-FS 2.1 Deployment Status • WLCG recommended client version is 2.1 • ALICE: almost all on 2.1, LHCb: ~10 sites still on 2.0, ATLAS/CMS: ? • Stratum 1, version 2.1: • FNAL, BNL: production • CERN, RAL: pre-production • ASGC: ? • Stratum 0: in deployment for ATLAS/LHCbnightlies, at GridPP, new repositories at Cern • Proposal • End-of-life for all CernVM-FS 2.0 components: 30. June 2014Exception: Stratum 0 at CERN • By that time: all clients + Stratum 1s migrated,2.1 Stratum 0 software tested under production load from ATLAS/LHCb nightly servers • Third quarter of 2014: migration of WLCG 2.0 repositories to 2.1 (automated migration utility exists) Side constraint: I will be out of office June-September 2014

  4. CernVM EOL (not CernVM-FS) • CernVM 2.X • Current CernVM 2.X based on SL5 • Based on Conary and other rPath tools • rPath does not exist anymore • CernVM 3 • Based on µCernVMbootloader and RPM • SL6 based image • No vendor lock-in • Beta release available since CHEP2013, positive feedback from early adaptors (ATLAS, LHCb, …) • Deployment / EOL Proposal: • I’d need advice from experiments on the validation • CernVM 3 Release Jan/Feb 2013 • CernVM 2 EOL: 31. September 2014

More Related