m0_cob_domain Struct Reference
#include <cob.h>
Collaboration diagram for m0_cob_domain:
Data Fields | |
| struct m0_format_header | cd_header |
| struct m0_cob_domain_id | cd_id |
| struct m0_format_footer | cd_footer |
| struct m0_be_btree | cd_object_index |
| struct m0_be_btree | cd_namespace |
| struct m0_be_btree | cd_fileattr_basic |
| struct m0_be_btree | cd_fileattr_omg |
| struct m0_be_btree | cd_fileattr_ea |
| struct m0_be_btree | cd_bytecount |
| struct m0_be_rwlock | cd_lock |
Detailed Description
cob domain
Component object metadata is stored in database tables. The database in turn is stored in a metadata container. A cob_domain is a grouping of cobs described by a namespace or object index. The objects referenced by the tables will reside in other, filedata containers.
A m0_cob_domain is an in-memory structure that identifies these tables. The list of domains will be created at metadata container ingest (when a container is first "started/read/initialized/opened".)
A m0_cob_domain cannot span multiple containers. Eventually, there should be methods for combining/splitting containers and therefore cob domains and databases.
Note: has to be allocated with m0_be_alloc()
The documentation for this struct was generated from the following file:
- cob/cob.h
