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xen-api
Re: [Xen-API] Alternative to Vastsky?
Sounds interesting and definately worth looking into. You would not
have the advantage of snapshots like you do with an LVM type
solution, but it may pay off in some instances from a performance
perspective.
I've never used InfiniBand, but I think you've just convinced me to
go buy a few cheap adaptors and have a little play.
On 19/04/11 23:39, Henrik Andersson wrote:
Now that VastSky has been reported to be on hiatus
atleast, I'dd like to propose GlusterFS as a candidate. It is well
tested and actively developed and maintained project. I'm
personally really interested in "RDMA version". It should provide
really low latencies and since 40Gbit InfiniBand is a bargain
compared to 10GbE, there should be more than enough throughput
availeable.
This would require IB support on XCP but my thinking is, it
would be beneficial in many other ways. For example I would
imagine RDMA could be used with live migrates.
-Henrik Andersson
On 20 April 2011 01:10, Tim Titley <tim@xxxxxxxxxx>
wrote:
Has anyone considered a replacement for
the vastsky storage backend now that the project is
officially dead (at least for now)?
I have been looking at Ceph ( http://ceph.newdream.net/
). A suggestion to someone so inclined to do something about
it, may be to use the Rados block device (RBD) and put an
LVM storage group on it, which would require modification of
the current LVM storage manager code - I assume similar to
LVMOISCSI.
This would provide scalable, redundant storage at what I
assume would be reasonable performance since the data can be
striped across many storage nodes.
Development seems reasonably active and although the project
is not officially production quality yet, it is part of the
Linux kernel which looks promising, as does the news that
they will be providing commercial support.
The only downside is that RBD requires a 2.6.37 kernel. For
those "in the know" - how long will it be before this kernel
makes it to XCP - considering that this vanilla kernel
supposedly works in dom0 (I have yet to get it working)?
Any thoughts?
Regards,
Tim
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