Re: Ceph as alternative for NBD and NFS

Hi Markus,

thank you for the blueprint proposal.
LTSP5 is not really maintained anymore,
and neither is ltsp.org, the wiki etc.

I'm currently in the final stages of developing the new LTSP19 version,
and setting up the documentation, the community wiki etc in github.

I've set up a small overview of the pages involved in the new site:
https://ltsp.github.io

I will make an announcement here when everything is ready.

So your idea would either go:
  * In the community wiki,
  * Or in the upstream LTSP19 issue tracker,
  * Or as a pull request against the LTSP19 code.

I think it would be best if you send it in 2-3 weeks though, so that 
I've first finished with the initial LTSP19 version, as it's still in flux.

Cheers,
Alkis


On 8/5/19 9:13 PM, Markus Kienast wrote:
> Hi there,
> 
> I would like to add a blueprint and implementation for adding Ceph/RBD 
> and CephFS support to LTSP.
> 
> Ceph provides a distributed redundant storage cluster, which uniquely 
> delivers object, block, and file storage in one unified system. Ceph 
> delivers extraordinary scalability–thousands of clients accessing 
> petabytes to exabytes of data. A Ceph Node leverages commodity hardware 
> and intelligent daemons, and a Ceph Storage Cluster accommodates large 
> numbers of nodes, which communicate with each other to replicate and 
> redistribute data dynamically.
> 
> Even client connections are fault tolerant, so a "network share" will 
> continue to be available, even it the server you are currently connected 
> to goes offline. It's scalability makes it a perfect match for storing 
> student data of a whole school or university. The fully redundant nature 
> of Ceph increases fault tolerance both for NFS-like home directories and 
> NBD-like root images.
> 
>   * The fully POSIX compliant CephFS (file storage layer) can server as
>     a perfect replacement for NFS.
>   * RDB - Rados Block Devices (block storage layer) can serve as a
>     replacement for NBD. 
> 
> I'd like to add the blueprint to the Wiki, but do not have Dev 
> privileges yet.
> 
> I am currently commissioning a Ceph backed LTSP cluster, so I will be 
> implementing this in the coming weeks for myself, but I would love to 
> see it included upstream.
> 
> My best regards,
> Markus
> 
> 
> --
> 
> Markus Kienast - CEO
> 
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> 
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