Disk usage for IBM Spectrum Scale (formerly GPFS) file systems.
uses mmapplypolicy instead of universal directory traversal
This can be considerably faster, especially for large directories, because
it uses file system internals and can use extensive parallelism. See the
respective command-line options in --help output for more information.
aims to be CLI compatible with du from coreutils
Not all options of du are supported yet. Some defaults are still
different.
Run with -? for concise help and --help for full help.
The main motivation is a speedy alternative to du due to mmapplypolicy
being much faster then universal directory traversal.
But because mmapplypolicy can not be run as a regular user, it is advisable
to set up timer or cron jobs to run this as a service for users and groups. You
could set up timers that run mmdu --max-depth x for each /data/dir and save
the output to /data/dir/disk-usage.txt. Users could configure the depth and
then check the output with sort -h /data/dir/disk-usage.txt. This avoids that
users have to do their own slow-running du -sh and avoids that stress to the
file systems.
bash
cargo install mmdu
bash
git clone https://github.com/idiv-biodiversity/mmdu.git
cd mmdu
cargo build --release
install -Dm755 target/release/mmdu ~/bin/mmdu