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SPI Software Process & Infrastructure for LCG

Migration of the LCG repositories to the IT CVS Service Application Area Meeting 4 February 2004 Andreas Pfeiffer. SPI Software Process & Infrastructure for LCG. LCG CVS repositories. Central CVS repositories managed and available to all projects 15 projects (21 repositories) as of today

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SPI Software Process & Infrastructure for LCG

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  1. Migration of the LCG repositories to the IT CVS Service Application Area Meeting4 February 2004 Andreas Pfeiffer SPI Software Process & Infrastructurefor LCG

  2. LCG CVS repositories Central CVS repositories managed and available to all projects 15 projects (21 repositories) as of today Using (not very secure) “pserver” access About 600 MB of disk space simu, lcgdeploy, infrastructure > 100 MB each Nightly backups of all repositories About 220 MB as tgz

  3. Status of present CVS service • CVS service on lcgapp server • Created as a temporary measure until IT CVS service could be used • In parallel to web and savannah service • Running on 2 mirrored disks for safety • Tools for automatic clean up of locks, etc

  4. New IT CVS service for LCG (I) Several machines for load balancing No AFS on request of LCG projects Aliases in own sub-domain “cvs.cern.ch” Three layers of security Mirroring to another machine (15 min) Regular copying to AFS as backup AFS backup No checks for consistency (obviously) Automatic lock removal As we had on lcgapp

  5. New IT CVS service for LCG (II) Available for testing since fall 2003 Several tests have been done by SPI team Report on tests is in preparation Old SPI tools are working on new service ViewCVS, lxr, doxygen http://pool.cvs.cern.ch:8180/ Old pages will be forwarded Mails for commit and tag

  6. Features of the new CVS service Fine-grained access control within repository Using commitavail/tagavail in CVSROOT Controlled by librarian New names for the repositories :ext:<user>@<project>.cvs.cern.ch:/cvs/<project> :kserver:<project>.cvs.cern.ch:/cvs/<project> SPI will provide script to change files in CVS/ for existing checkouts (updating the repo name)

  7. Migration to new CVS Service Extensive documentation available from http://cern.ch/lcgcvs -> “How To” New access methods: Removing insecure pserver protocol Only kserver and ext/ssh on default ports For security reasons Keys can be imported to .ssh/authorized_keys Locally on sundev, not in (AFS) home dir! See documentation Users need account at CERN (*PLUS) ! SPI will help project leaders with user issues

  8. Migration time scale • Migration will take place “by repository” • Will start with SPI next week • Time slot from mid Feb until end March • Project leaders, let us know when ready for migration • Expect a “downtime” of order an hour without access to repository • Move of files from lcgapp to new repository • No cvs operation will be available • Need to run script in checked out areas to change CVS repository name • Timing to be validated with migration of SPI

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