Mar 21 – 27, 2009
Europe/Prague timezone

Dealing with orphans: catalogue synchronisation with SynCat

Mar 26, 2009, 8:00 AM


Prague Congress Centre 5. května 65, 140 00 Prague 4, Czech Republic
Board: Thursday 020
poster Grid Middleware and Networking Technologies Poster session


Dr Paul Millar (DESY)


In the gLite grid model a site will typically have a Storage Element (SE) that has no direct mechanism for updating any central or experiment-specific catalogues. This loose coupling was a deliberate decision that simplifies SE design; however, a consequence of this is that the catalogues may provide an incorrect view of what is stored on a SE. In this paper, we present work to allow catalogue re-synchronisation. This shows how catalogues can be more certain that the files are stored on the SE and how more transitory metadata may be propagated with low latency; for example, whether a file stored on tape is currently available on disk.

Primary author

Dr Paul Millar (DESY)


Presentation materials