wiki:How-tos/FindFilesWithAGivenNumberOfReplicas
Last modified 11 years ago Last modified on 01/29/10 12:24:11

How-To Find Files With A Given Number Of Replicas

The following describes how to find files with a given number of replicas.

Requirements, Constraints And Conventions

  • The usage of Chimera as file-hierarchy-provider and PostgreSQL as DBMS for the chimera-database is expected (it should be however easy to adapt to another DBMS).
  • Several POSIX-utilities are required.
  • Lines starting with “$” are entered within a POSIX-sh-compatible shell.
  • Lines starting with “#” are entered within a POSIX-sh-compatible shell, with the effective user-ID and group-ID being 0 (“root-rights”).
  • Lines starting with “(location) >” are entered within dCache’s administration interface with location as the current location.
  • Standard input is written bold, standard output normal and standard error underlined.

Introduction

In dCache files can have many replicas spread over different pools of a dCache cluster. It is even possible that a file as zero replicas, which happens when all replicas were deleted or lost but the file-hierarchy-provider Chimera still thinks that the file exists.

TBD

WIP

License Of This Document

Copyright © 20010, Christoph Anton Mitterer <mail@christoph.anton.mitterer.name>.
All rights reserved.


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