[Gluster-users] PLEASE READ ! We need your opinion. GSOC-2014 and the Gluster community

[André Bauer]

Hi,

i vote for 3, 2, 1.

But i dont like the idea to have an extra node for 3, which means
bandwidth/speed of the whole cluster is limited to the interface of the
cache node (like in ceph).

I had some similar whish in mind, but wanted to have a ssd cache in
front of a brick. I know this means you need 4 SSDs on a 4 node cluster
but imho its better than one caching node which is limitng the cluster.


Mit freundlichen Grüßen

André Bauer

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André Bauer
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Am 13.03.2014 12:10, schrieb Carlos Capriotti:
> Hello, all.
> 
> I am a little bit impressed by the lack of action on this topic. I hate to
> be "that guy", specially being new here, but it has to be done.
> 
> If I've got this right, we have here a chance of developing Gluster even
> further, sponsored by Google, with a dedicated programmer for the summer.
> 
> In other words, if we play our cards right, we can get a free programmer
> and at least a good start/advance on this fantastic.
> 
> Well, I've checked the trello board, and there is a fair amount of things
> there.
> 
> There are a couple of things that are not there as well.
> 
> I think it would be nice to listen to the COMMUNITY (yes, that means YOU),
> for either suggestions, or at least a vote.
> 
> My opinion, being also my vote, in order of PERSONAL preference:
> 
> 1) There is a project going on (https://forge.gluster.org/disperse), that
> consists on re-writing the stripe module on gluster. This is specially
> important because it has a HUGE impact on Total Cost of Implementation
> (customer side), Total Cost of Ownership, and also matching what the
> competition has to offer. Among other things, it would allow gluster to
> implement a RAIDZ/RAID5 type of fault tolerance, much more efficient, and
> would, as far as I understand, allow you to use 3 nodes as a minimum
> stripe+replication. This means 25% less money in computer hardware, with
> increased data safety/resilience.
> 
> 2) We have a recurring issue with split-brain solution. There is an entry
> on trello asking/suggesting a mechanism that arbitrates this resolution
> automatically. I pretty much think this could come together with another
> solution that is file replication consistency check.
> 
> 3) Accelerator node project. Some storage solutions out there offer an
> "accelerator node", which is, in short, a, extra node with a lot of RAM,
> eventually fast disks (SSD), and that works like a proxy to the regular
> volumes. active chunks of files are moved there, logs (ZIL style) are
> recorded on fast media, among other things. There is NO active project for
> this, or trello entry, because it is something I started discussing with a
> few fellows just a couple of days ago. I thought of starting to play with
> RAM disks (tmpfs) as scratch disks, but, since we have an opportunity to do
> something more efficient, or at the very least start it, why not ?
> 
> Now, c'mon ! Time is running out. We need hands on deck here, for a simple
> vote !
> 
> Can you share 3 lines with your thoughts ?
> 
> Thanks
> 
> 
> 
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