This repository includes codes of a distributed file system, Mogami.

Author: MIKI HORIUCHI <mikity@eidos.ic.i.u-tokyo.ac.jp>

Creation Date: 6/14/2012

Last Update: 6/14/2012

• FUSE
• python-fuse

They might be installed using a packaging system of your distribution. The example with Debian follows:

# apt-get install fuse
# apt-get install python-fuse

FUSE

http://fuse.sourceforge.net/

python-fuse

http://pypi.python.org/pypi/fuse-python

Add bin/ of this repository to PATH environmental variable.

Mogami consists of three components:

• Metadata server
• Data servers
• Clients

Data servers and clients must be run after a metadata server has been activated.

$ mogami --meta /path/to/metadata/dir

This starts the metadata server daemon.

$ mogami --server --meta_addr METADATA_SERVER_HOSTNAME /path/to/data/dir

This starts a data server daemon.

$ mogami --client --meta_addr METADATA_SERVER_HOSTNAME /path/to/mount/dir [fuse options]

This starts a Mogami client daemon and mounts /path/to/mount/dir.

To unmount /path/to/mount/dir:

$ fusermount -u /path/to/mount/dir

Umount can fail with errors like “device is busy” if another process accesses /path/to/mount/dir. In case of those, kill the metadata server daemon and the data server daemons by sending SIGINT.