CASEVision/ClearCase Concepts Guide. a high-level discussion of product features. CASEVision/ClearCase User’s Guide and Administration Guide. collections. Administrator’s Guide: Rational ClearCase document and related documents introduce several key concepts— including native mode, mixed mode, domain. ClearCase is a comprehensive software configuration management system. .. In addition to this manual, the CASEVision™/ClearCase Concepts Guide, the.
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See the mkvob manual page for a discussion of this directory. A VOB or view can have auxiliary data storage on cawevision where ClearCase is not installed; such storage is accessed through standard symbolic links. Developers think of views and VOBs as being very different: It extends the UNIX file system, allowing you to access any version of an element directly, using a version-extended pathname. The user who creates a VOB becomes its owner. Each VOB can have at most one tag in a region; views can have multiple tags in a region.
Register the view confepts its new location. Setting Up ClearCase Views View Storage Requirements Each ClearCase view is implemented as a view storage directory, gukde directory tree that holds a small database, along with a private storage area that contains view-private files, checked-out versions of elements, and unshared derived objects. Each of the files listed above is a file elementwith a hierarchical version tree.
General graphical tool for browsing source code and other tasks in ClearCase. In many cases, however, a cleartext pool is accessed instead of the source pool. Because we are in the target region, the -region argument to mktag is not required. Verify the new VOB-tags—On a host in the west region: For example, a host might be known to some Network Regions hosts and their automounter programs as neptune, and to other hosts as neptune-gw.
The remote storage pool pathname must apply to all hosts that will access the VOB, but the existence of multiple network cleqrcase implies that giide sets of pathnames are required to access VOBs from different hosts in the network.
To make sure, another mount command verifies the location of the VOB storage area: When a user runs a ClearCase program, it attempts to obtain a casevisjon.
List of Figures
Here are the principal tradeoffs: In addition, make sure that no over-the-network backups of the view server hosts are per- cwsevision on the VOB server or pool hosts.
If a file is checked-out, changing the access mode of the element does not affect the mode of the view-private file which is the checked-out version.
Unpublished rights reserved under the Copyright Laws of the United States. For increased flexibility, the data storage for an individual VOB or view can be distributed conceps two or more hosts. Simply repeat this step to reactivate it. The larger the block buffer cache, the less frequently it should be flushed.
This also removes the corresponding derived objects from the VOB database. Such entries reflect ClearCase Release 1. Use command to show differences between files.
Cpncepts explained below, storage pools can be remote.
Power user mechanisms in ClearCase Change directory to the root of the version tree for the element foo. User-Level Access to ClearCase Data -r–r–r–rw-rw-r–r–r–r–rw-rw-r–r–r–r–rw-rw-r– 1 1 1 1 1 1 drp drp drp drp drp drp dvt dvt dvt dvt dvt dvt Feb Feb Feb Feb Feb Feb 19 19 19 19 19 19 For the most part, you can forget that you are using a special mechanism the view to access the data.
Alternatively, you might change the way that scrubber is invoked, so that it takes less time to run. Moving the ClearCase Registry Use this procedure to move the ClearCase storage registry directory tree to another host. Created versioned object base “libpub.
Clear Case Concepts and Terminology
The following sections present some simple examples of adjusting the way VOB storage pools are scrubbed. Accommodating Multiple User Groups 64 Example: Derived Object Storage Pools Each derived object storage pool holds a collection of derived object data containers.
Let’s see what the VOB’s source directory contains. VOB storage pools VOB clearcaes local storage pool VOB host remote storage pools can be located on another disk partition on same host, or on another host remote host Figure Local and Remote VOBStorage Pools This is a powerful feature, enabling a single logical entity to be distributed physically. This includes the ClearCase release area, the license server, and the registry server.
Prepare a physical storage location— This is the only step that requires root privileges.
Typically, however, the repository is distributed among multiple versioned object bases VOBslocated on multiple hosts. List file versions that exist on branch type aa for the current directory sub-tree.
In essence, a view makes any VOB appear to be a standard directory tree, by selecting one version of clearcwse version-controlled object. Figure shows a simple network in which global naming has been achieved. These scripts, in turn, invoke other scripts that run the scrubber programs.
Introduction to ClearCase Administration v 1.0 – Wood
The sample command output shown in this tutorial was created on a SunOS host by a user with umaskusing a C shell. You can select either of these alternative invocations: Check-in file to save your changes. The view manual page provides concpts detailed description of the contents of a view.