Prerequisite: The VOB being activated must already have a VOB tag for your host's network region in the ClearCase registry. See the mkvob and mktag reference pages.
The mount command activates one or more VOBs on the local host. The mount command mounts a VOB as a file system of type MVFS (multiversion file system) and is inapplicable to non-MVFS installations.
The mount –all command mounts all public VOBs listed for your host's network region in the VOB registry. (It does not mount private VOBs or VOBs whose tag entries include the mount option noauto.) On UNIX systems, this command executes at ClearCase startup time; see the init_ccase reference page.
A public VOB can be activated by any user; if the mount-over directory does not already exist, it is created.
A private VOB can be activated only by its owner. The root user or VOB owner can use the standard mount(1M) command to mount a private VOB; other users cannot mount it. The mount-over directory must already exist and be owned by the VOB owner.
A public VOB can be activated with the following command:
Usually, the system administrator automates this command for ClearCase users at login time.
Any user can mount any VOB, public or private. The private designation means only that a VOB must be mounted separately, by name.
You reference a VOB by its VOB tag (the full pathname of its mount point), not by its storage area pathname. The mount command uses the VOB tag to retrieve all necessary information from the ClearCase registry: pathname of VOB storage area, pathname of mount point, and mount options.
See “UNIX—Mounting of Public and Private VOBs” and “Windows—Mounting of Public and Private VOBs”.
All platforms—ro, rw, soft, hard, intr, nointr, timeo, retrans, noauto, nodnlc, noac, acdirmin, acdirmax, acregmin, acregmax, actimeo
UNIX—nodev, nosuid, suid
Windows— suid (applicable only for a tag used to mount a VOB on UNIX), poolmap
Note: On UNIX, see the appropriate operating system reference page (for example, mount(1M)) for a description of these options. Enclose this argument in quotes if it contains white space.
Note: On UNIX, if you don't specify a time-out or retransmission option, default values are used:
timeo=5 (seconds)
retrans=7 (retries)
Note: On UNIX, by default, a VOB is mounted in nointr mode. This means that operations on MVFS files (for example, open(2)) cannot be interrupted by typing the INTR character (typically, CTRL+C ). To enable keyboard interrupts of such operations, use the intr mount option.
Note: On Windows, use commas to separate multiple options, not commas and white space. Options that take numeric arguments take the form option=n. Enclose the entire option list in quotes if it contains white space.
Note: The time-out values specified in several of these mount options affect the view's metadata latency (the delay before changes to VOB metadata become visible in a dynamic view other than the one in which the changes were made). Longer time-out values improve performance at the expense of greater latency. Shorter time out values decrease latency, but also have an impact on view performance because the caches must be refreshed more frequently.
The UNIX examples in this section are written for use in csh. If you use another shell, you may need to use different quoting and escaping conventions.
The Windows examples that include wildcards or quoting are written for use in cleartool interactive mode. If you use cleartool single-command mode, you may need to change the wildcards and quoting to make your command interpreter process the command appropriately.
In cleartool single-command mode, cmd-context represents the UNIX shell or Windows command interpreter prompt, followed by the cleartool command. In cleartool interactive mode, cmd-context represents the interactive cleartool prompt.
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