GlusterFS

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GlusterFS is a cluster file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. GlusterFS is based on a stackable user space design without compromising performance. For a list of features, see GlusterFS Features.

[edit] Installation

[edit] Fuse Support (prerequisites)

Filesystems in Userspace (aka FUSE) is required in order to use GlusterFS. Gluster also provides a patch for FUSE to provide the following benefits over the current stock release.

• It supports higher IO buffer size, which gives increased IO performance.
• It provides flock() syscall, which provides you with advisory locks functionality. This is not present in regular fuse tarball.
• Supports O_DIRECT flag handling in open() calls

GlusterFS works with fuse version 2.6.0 and above. If you are using kernel <2.6.25 you can use fuse from within your kernel or portage. (As of Dec-08, Gluster recommends that the patched version of FUSE be used for kernels newer than 2.6.25.) However it is recommended that you install/use the patched version as described from here on.

• First you need to ensure that FUSE_FS(Filesystem in Userspace support) is disabled in your kernel.
• Then remove fuse if its installed via portage

• Download patched FUSE from either of the following:
  • http://ftp.zresearch.com/pub/gluster/glusterfs/fuse/
• Run the following as root:

[edit] Installing Gluster

Just unmask (if nessesary) and emerge glusterfs:

[edit] Creating a configuration File

To keep from reinventing the wheel here is a good page to help setup a working configuration file. http://gluster.org/docs/index.php/GlusterFS

[edit] Mounting your GlusterFS

GlusterFS shares can be mounted with ease ...

1. Mount glusterFS Storage

/usr/sbin/glusterfs --volfile=/etc/glusterfs/glusterfs.vol /mnt/glusterfs

will mount the GlusterFS volume to /mnt/glusterfs

I had trouble launching XEN VMs when stored on a GlusterFS volume, what fixed it for me was to add --disable-direct-io-mode to the command above, so now I am using, /usr/sbin/glusterfs --disable-direct-io-mode --volfile=/etc/glusterfs/glusterfs.vol /mnt/glusterfs

[edit] Adding a GlusterFS brick in fstab

See Mounting a GlusterFS Volume of the official documentation.

[edit] External links

• Official Gluster Documentation