News

• WLCG Collaboration workshop was organized by dCache.org at DESY in July 11-13, 2011. (Video Recordings)
• EMI 1 (Kebnekaise) released. Kebnekaise
• Great success : 5th dCache workshop in Göttingen, 16/17 March, 2011
• dCache Articles
• European Middleware Initiative, EMI started May 2010. Factsheet
• Security
  • dCache.org is introducing a new mailing list :
    security at dcache dot org dCache user should report problems or bugs to this list if there is the suspicion that the issue is security related or if the report may contain confidential information. (e.g. passwords). Only a very restricted number of people have access to this particular mailing list.
• Newletters and announcements.
• Chimera :
  In order to be prepared for the first year of LHC datataking, we recommend to upgrade the pnfs filesystem to chimera. Please checkout the migration instructions and give it a try. You can evaluate the entire migration procedure in a safe test environment. Some sites already started the migration end of last year. Up to know, the NDGF Tier I and about 10 dCache Tier II are operating chimera. No problems have been reported yet. More information is available from our documentation area. The main advantages of chimera are :
  • Chimera scales nicely with the hardware performance and the database backend.
  • You may run regular SQL queries to collect maintainance and monitoring information of the chimera filesystem.
  • File system ACL inheritance is only available with Chimera. With pnfs, newly created directory will get the default set of ACL's. With Chimera it will inherit its parent ACLs .
• The dCache wiki : In addition to the Book, we offer a wiki were you may find some more helpful information. Check the link to findout on how you can contribute to the wiki with advise, documentation or tools.

• 2.0 coming soon

Fomerly known as version 1.9.14. Despite the version number increase, the number of changes are not bigger than between usual feature releases. The version number is increased because of changes in the version number format.

• HTTP Basic Authentication for WebDAV.
• Reduced latency for server side srmCopy.
• ACL admin service integrated into pnfs manager.
• Wildcards in pool manager commands.
• SRM client's overwrite request can be honored without having to enable overwrite in other doors.
• Pool to pool transfers use HTTP rather than DCAP.
• Pluggable pool selection algorithm and a new write pool selection algorithm.
• Lots of work on the webadmin component.
• 1.9.13 is out
• Reduced latency in pool selection, pinning, Chimera authorization, and single file listing through SRM.
• Continous background checksum verification in pools.
• Support SRM_FILE_UNAVAILABLE in SRM.
• POSIX compliant lookup permissions checks for Chimera.
• Space manager database performance improvements.
• SRM can optionally skip pinning for ONLINE files.
• SRM can optionally work without pin manager in installations without tape.
• Plain text FTP can use gPlazma for authentication.
• 1.9.12 Golden Release II, recommended
• Supported until April 2013.
• The ultimate dCache Golden Release upgrade guide by Gerd (NDGF).
• GLUE 2 support.
• New pin manager.
• HTTP support for third party srmCopy transfers.
• Proxy certificate and VOMS support in the HTTP/WebDAV door.
• Reduced file open latency.
• gPlazma 2 with ARGUS black listing.
• 1.9.11 supported
• 1.9.6 to 1.9.10 are deprecated.
• 1.9.5 Golden Release will be supported until the end of the technical break primo 2012.
• 1.9.4 and below are deprecated.

• Time Based Releases : The dCache project is moving away from feature based releases towards Time Based Releases. As the name already implices, this essentially means that we will be better in predicting when a release is being published. The drawback is that features which don't make it into the repository till some time before the release is due, just won't be part of that release. The advantage is that sites can do better planing in upgrading and that the synchronization with our distributors is eased.