Bookkeeping

Description of tables in BOOKKEEPING schema in the Flysafe database

[Image|Bookkeeping_datamodel.png]

FILES

The FILES table describes the status of all data-files which have been or need to be processed. This information is used by the bookkeeping service on the flysafe website

ID	unique file id
filename	unique file name
file_type	Type of file ie MPR, ECMWF,
file_size	Size of file in bytes
status	Status of file ie new, processed, archived
filename_time	Time associated with filename as timestamp.
time_in	Timestamp when file was first registered
time_changed	Timestamp of last status change

Flysafe Grid-Store Catalog

The following three tables are used to implement the Flysafe Grid-Store catalog. If files are being archived or copied the Grid-Storage, this is administratred in the following tables.

For Grid-Storage it is preferable to have a limited number of big files instead of many small files. Therefore files are first collected into bigger archives, which are then stored as archive to the Grid-Storage. This is also maintained in the tables below.

FILE_CATALOG

Every file to be stored gets an entry in the FILE_CATALOG table.

id	ID for file
filename	Unique filename
filetype	Type of file (MPR, tar, etc)
path	Original path of file on Flysafe server

ARCHIVE_FILE

Files can be collected together in archive (usually tar files). These archive files are also registered as files in the FILE_CATALOG table. The ARCHIVE_FILE table contains the information about which files are in what archive file.

archive_id	Id of archive file in FILE_CATALOG table
file_id	Id of file in archive in FILE_CATALOG table
archive_path	Path of file in archive

FILE_REPLICA

The FILE_REPLICA table contains the actual storage location of the stored files. It is possible to have more replicas of the same file.

file_id	References in file_catalog
replica_id	replicanumber, ie 1 for first replica, 2 for second etc
surl	SURL is the storage location.
stored	timestamp with time of storage
adler32	adler32 checksum of file
verified	boolean indicator

Auxiliary tables

SRMREQUEST

The SRMREQUEST table is used when it is requested to have a file or group of files restored from SRM. In this table the status of the request is maintained so that it can be shown on a website. It is also possible to check all requests for a specific user.

id	Unique ID
username	Name of user who requested the restore
status	Status of the request
time_start	Timestamp when request was started
time_changed	Timestamp when request was changed