mscTools

mscTools is a quick hack at a tool for torturing mass storage. It uses random block access and random block sizes to copy data between one location (file or block device) and another location.

• This is not a production tool, use at your own risk
• There is no built in help. Read main.c to figure it out until I get around to cleaning up argument parsing.

Build

This project currently only works in Linux environments, and requires GLib headers / libs

$ git clone [git-repo-url] mscTools
$ cd mscTools
$ make

Output binary can be found in the build directory. Superuser permissions may be required for some operations

Modes

Several modes are planned for the tool. Below is a description of what is currently implemented

• Random Block Copy (rbc) - rbc will copy data from one location (file or block device) to another location, in the worst possible way. It will perform all reads/writes in a random order, with a random size, with fsync's between each operation. This will copy up to the input files length to the output file.

Example

Below is an example of generating, writing, and reading back a 32MB file to a jump drive (/dev/sdg). This uses the random block copy (rbc) mode.

# Create random block
$ dd if=/dev/urandom of=/tmp/random_block ibs=512 count=65536
# Copy data from random_block to /dev/sdg using rbc (random block copy)
$ ./mscTools rbc /tmp/random_block /dev/sdg
# (Disconnect / reconnect jump drive to prevent OS caching)
# Copy data back out
$ ./mscTools rbc /dev/sdg /tmp/read_back
# Verify data
$ md5sum /tmp/random_block
$ md5sum /tmp/read_back

Development

All source is written in C.

License

Simplified BSD