[Linux-aus] Ceph FS vs Gluster FS

[Miles Goodhew]

Hi Anestis,
  I used to be "The Ceph guy" at a large an annoying government department. I think the nutshell differences I see are:
 
Gluster:
 • Smaller scale (5-ish nodes max, I think)
 • Network filesystem only
 • Integrated services (storage and control/mgmt on the same boxes)
 • Limited redundancy and failure-domain options
 • A little simpler to set up on its own
Ceph:
 • Scales up to gigantic, multi-region clusters
 • Block storage (RBD), File storage (CephFS) and Object storage (RGW) options available
 • Control/mgmt can be on separate nodes (And should be unless you have a really small cluster)
 • Any speed, redundancy (replication or erasure coding) or failure-domain setup you can think of. You can have multiple setups for different storage pools within the cluster.
 • Takes a bit more planning and implementation to deploy
Like Neill said: Openstack uses the RBD application to present "disk like" virtual storage devices to the compute nodes for the VMs to use. The old Redhat Enterprise Virtualisation (OVirt) *used* to use Gluster as its network storage system (putting disk images as files on top of it). However I'm not sure this is still the case.

CephFS works really well as an NFS replacement (it's just a lot more fiddly to set up). RGW can present itself as either S3 or Swift protocol (Or a "weird" NFS version too - but don't go there).

Hope that's enough, but not too much info,

M0les.

On Tue, 6 Jun 2023, at 04:55, Anestis Kozakis via linux-aus wrote:
> I was wondering fi people could summarize  me the difference as well s the pros and cons fo GlusterFS vs CephFS inr regards to the following uses:
> 
> File Server/System and creating Virtual Machines and Containers.
> 
> I will, of course, do my own research, but I am looking to get other people's experiences and opinions.
> 
> Anestis.
> --
> Anestis Kozakis | kenosti at gmail.com
> 
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