When the MVFS is installed on Linux® or
the UNIX® system, the /view directory
functions as the mount point for the MVFS namespace. Because this /view directory
causes the root directory to contain itself recursively, commands
that traverse the entire directory, starting at the system root, loop
infinitely.
On many hosts that run Linux or
the UNIX system, a daily
cron script cleans
up the file system. If this script uses a
find / command,
it runs the risk of looping infinitely.
Note: Any command that operates
on the entire file system, beginning at /, can
loop in this way, regardless of whether it is run from the command-line,
a script, or a GUI, and regardless of whether it is run by root or
another user.
The Rational® ClearCase® installation
script analyzes the crontab file of the root user
and modifies entries in this file to prevent the recursive traversal
problem. If it cannot complete this modification, it displays a warning
message.
After installation, verify the correctness of these changes, and
then modify the crontab entries of other users as needed to
remove any command that operates on the entire file system beginning
at the system root. Detailed information about platform-specific options
is in the online IBM Rational ClearCase Platforms Guide. It is
also a good idea to add comments to the crontab files
warning others not to add entries that cause recursive traversal problems.