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fsx(8) System Manager's Manual fsx(8) NAME fsx - file system exerciser SYNOPSIS /usr/field/fsx [ -h ] [ -ofile ] [ -tn ] [ -fpath ] [ -pm ] DESCRIPTION The fsx exerciser spawns the background process fsxr, and these two processes exercise a file system by creating, opening, writing, open- ing, reading, validating, closing, and unlinking a test file. These test files are created in the /usr/field directory (the default) unless the -fpath flag is used. You can spawn up to 250 (default is 20) fsx processes (fsxr1, fsxr2, ... fsxrn where n is the number of processes spawned). The exerciser will run until a Ctrl/C or kill -15 pid command is sent to the process. A logfile for you to examine and then remove is created in the current working directory. If there are errors in the logfile, make sure you check the syslog file where the driver and kernel error messages are saved. FLAGS The fsx flags are: Prints the help messages for the fsx command. Saves the output diagnostics in file. Run time in minutes (n). The default is to run until the process receives a Ctrl/C or a kill -15 pid com- mand. Number (m) of fsx processes to spawn. The maximum is 250; the default is 20. Path name of directory on file system you wish to test. For example, /mnt or /usr. The default is /usr/field. RESTRICTIONS If you must run a system exerciser over an NFS link or on a diskless system, there are some restrictions. For exercisers such as fsx(8), which must write into a file system, the target file system must be writable by root. Also, the directory in which any of the exercisers are executed must be writable by root because temporary files are writ- ten into the current directory. These latter restrictions are some- times difficult to overcome because often NFS file systems are mounted in a way that prevents root from writing into them. Some of the re- strictions may be overcome by copying fsx and fsxr to another directory and then executing it. Avoid using the fsx exerciser over an NFS or diskless file system. Each time you run fsx, it creates a log file. The exerciser allows you to accumulate up to 9 log files. If you run fsx to create a tenth log file, it exits and displays the following error messages: fsx: Remove old log files fsx: Can not start report generator, test aborted When this situation occurs, remove at least one log file and run fsx again. EXAMPLES The following example runs 10 fsx processes on /mnt until the process receives a Ctrl/C or kill -15 pid command: % /usr/field/fsx -p10 -f/mnt The following example runs 20 fsx processes on /usr/field for 120 min- utes in the background: % /usr/field/fsx -t120 & RELATED INFORMATION cmx(8), memx(8), shmx(8), tapex(8), diskx(8) delim off fsx(8)