<div dir="auto">Yes, I would be interested to hear more on the findings. Let us know once you have them. </div><div class="gmail_extra"><br><div class="gmail_quote">On Nov 1, 2017 13:10, "Shyam Ranganathan" <<a href="mailto:srangana@redhat.com">srangana@redhat.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 10/31/2017 08:36 PM, Ben Turner wrote:<br>
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* Erasure coded volumes with sharding - seen as a good fit for VM disk<br>
storage<br>
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I am working on this with a customer, we have been able to do 400-500 MB / sec writes! Normally things max out at ~150-250. The trick is to use multiple files, create the lvm stack and use native LVM striping. We have found that 4-6 files seems to give the best perf on our setup. I don't think we are using sharding on the EC vols, just multiple files and LVM striping. Sharding may be able to avoid the LVM striping, but I bet dollars to doughnuts you won't see this level of perf:) I am working on a blog post for RHHI and RHEV + RHS performance where I am able to in some cases get 2x+ the performance out of VMs / VM storage. I'd be happy to share my data / findings.<br>
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Ben, we would like to hear more, so please do share your thoughts further. There are a fair number of users in the community who have this use-case and may have some interesting questions around the proposed method.<br>
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Shyam<br>
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