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Re: [Linux-cluster] Diskless Shared-Root GFS/Cluster



We boot from flash drives, then pivot root to SAN storage.

I agree with no drives in servers, but shared root is a
whole different ball game if you mean everyone using a
single filesystem for root.

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On Jan 31, 2007, at 8:38 AM, isplist logicore net wrote:

Did you ever give it a try at all? I mean, isn't anything potentially
devastating if it becomes broken?

In my case, it's silly to have drives running on every server and then also having centralized storage. It would save power, heat and another level of
failure if I could use a sharedroot system.

Of course, along the same lines, if it's too complex or finicky then it might
not be worth the trouble... for now.

Mike


On Wed, 31 Jan 2007 01:26:02 -0800, Tom Mornini wrote:
We strongly considered this when implementing our cluster

infrastructure,
but decided against it when we realized just how devastating *any*
problem
with that shared root would be...

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On Jan 30, 2007, at 11:39 PM, Marc Grimme wrote:

Mike,
On Tuesday 30 January 2007 17:50, isplist logicore net wrote:
I saw a few posts from some working on this. Has anyone gotten
this to work
properly? My nodes simply do not need their hard drives, it's a
waste of
power and hardware since I have plenty of central storage. I would
like to
remove drives from nodes and boot the cluster diskless.

I've seen the open shared-root project and such but those seem to
be about
building the entire cluster. Since I have the cluster going, I'm
looking
for information on how I can convert my nodes to diskless.

Thanks for any information you can provide.

Mike
There are quite a some people (increasing every day) using open-
sharedroot
clusters in productive environments with loads of different
applications. I
also wrote a MiniHowto and some other docs (have a look at
www.open-sharedroot.org) to give assistance.

As Mike Hagmann already stated it is not a trivial task to build up
such a
cluster (as it's not a trivialtask to build up any type of productive
clusters, but isn't that a reason why we are doing all that ;-) )
but the
MiniHowto should help you on the one hand and on the other hand you
can get
more help from open-sharedroot or us at ATIX (www.atix.de). If you
like.
Feel free to ask.
Regards and have fun
Marc.


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Gruss / Regards,

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