Difference between revisions of "Bookkeeping"
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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. | 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 | 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. | + | archive to the Grid-Storage. This is also maintained in the tables below. |
== FILE_CATALOG == | == FILE_CATALOG == | ||
Revision as of 11:19, 2 June 2008
Contents
Description of tables in BOOKKEEPING schema in the Flysafe database
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 | Timastamp 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
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 |
