On Wed, Apr 25, 2012 at 01:47:23PM +0200, Lars Täuber spake thusly:
Tracy Reed tr...@ultraviolet.org schrieb:
Reasons why I am currently migrating away from AoE to iSCSI (*sigh*):
1. Disk alignment between Xen VMs and the target.
What do you mean by that?
I mean that when I configure
been using LACP but with multipath you can span switches without needing
fancy expensive stacking switches which is pretty cool. I really should
consider whether I want to go multipath with iSCSI.
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Tracy Reed
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Here's a good blog article on some of the current problems with AoE that are
killing its adoption and therefore utility to potential Coraid customers:
http://www.typinganimal.net/wp/2012/04/16/red-hat-just-doesnt-get-aoe/
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Tracy Reed
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complete and there are no showstopper bugs that I am
aware of. So there hasn't been much work done on it. I'm don't know what
Coraid's long-term plans for it are.
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Tracy Reed
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: Throw lots of
spindles at the problem.
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, I don't see the need for
partitioning at this level.
Good. Glad you got your performance issue fixed. I have strugged with many
myself over nearly 6 years of using AoE and I what I gave you is my standard
formula for always getting max performance.
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Tracy Reed
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tunnel (being careful of MTU concerns etc).
I think the genious of AoE vs iSCSI is in adhering to the separation of
concerns of each of the layers of the network stack.
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Tracy Reed
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for driver development.
I doubt this question has little practical value for the original poster.
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Tracy Reed
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Beautiful is writing same markup
to try.
You may need to align the start of data of your partition on a 64
cylinder boundary. I don't have a web browser handy but google for
linux raid alignment and you should find some pointers which may help.
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Tracy Reed
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for accessing the
underlying block device.
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for it?
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-caching-alignment.pdf/at_download/file
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Tracy Reed
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:
http://copilotco.com/Virtualization/wiki/aoe-caching-alignment.pdf/at_download/file
All to no avail. What am I missing here? Why is domU apparently
fudging my writes?
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Tracy Reed
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partitioning problem. But every scheme I have tried has failed to work
properly. Appreciate any pointers.
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Tracy Reed
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else?
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) but otherwise normal. I don't see anything indicating
alignment issues.
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Tracy Reed
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Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment
the problem could be.
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Tracy Reed
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Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration
module and sets up any
necessary networking to make the AoE root fs accessable and then
continues with the normal boot process. I bet FreeBSD can do
similar. You will probably have to make the FreeBSD initrd yourself
just like I did for Linux.
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Tracy Reed
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