fsx(8)fsx(8)NAMEfsx - file system exerciser
SYNOPSIS
/usr/field/fsx [-h] [-ofile] [-tn] [-fpath] [-pm]
OPTIONS
The fsx options 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
command. 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.
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 option 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.
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
restrictions may be overcome by copying fsx and fsxr to another direc‐
tory 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 &
SEE ALSO
Commands: cmx(8), diskx(8), memx(8), shmx(8), tapex(8)fsx(8)
