The VOB storage directory

This topic describes the contents of a VOB storage directory. An understanding of these contents can be useful to anyone responsible for VOB storage maintenance.

A VOB storage directory and all of its contents are created as part of the VOB creation process. It can reside on a VOB host or on a supported network-attached storage device. The directory structure is visible when you use native operating system utilities to list the VOB storage directory and its subdirectories and files, which include the following:

.pid
A one-line text file that lists the process ID of the VOB’s associated vob_server process.
admin
A directory that contains administrative data related to the amount of disk space the VOB is using. Use cleartool space –vob or the DevOps Code ClearCase® Administration Console to display this data.
vob_oid
A one-line text file that lists the VOB’s object identifier (OID) expressed as a universal unique identifier (UUID). This UUID is the same for all the replicas in a VOB family. This value is also stored in the VOB’s database; do not change it.
replica_uuid
A one-line text file that lists the replica UUID of this particular replica of the VOB. Different replicas created with DevOps Code ClearCase MultiSite have different replica UUIDs.
.identity
On hosts running Linux or the UNIX system, a subdirectory whose files establish the VOB’s owner and group memberships. See Access control for VOBs and objects they contain.
identity.sd
On Windows® hosts, a binary data file that contains the security descriptor for the VOB storage directory.
groups.sd
On Windows, security descriptors of the VOB’s supplementary groups.
s
A subdirectory in which the VOB’s source storage pools reside.
d
A subdirectory in which the VOB’s derived object storage pools reside.
c
A subdirectory in which the VOB’s cleartext storage pools reside.
db
A subdirectory containing the files that implement the VOB’s embedded database.
vob_server.conf
A text file read by the vob_server at startup. It contains the setting for deferred deletion of source containers; deferred deletion is activated if you have turned on semi-live backup. See the vob_snapshot_setup reference page for more information.
.hostname
A text file that records the name of the VOB’s server host.
.msadm_acls
Stores the DevOps Code ClearCase MultiSite administration server’s ACL