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<p class="MsoNormal"><span lang="EN-US">Thanks for the response. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">LVM caching seems like a sensible solution, although compared to the hot/cold separation of tiered volumes, it actually reduces the overall storage capacity.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Does LVM caching work cleanly with Gluster’s snapshot feature?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Rupert<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b>Von:</b> Olaf Buitelaar <olaf.buitelaar@gmail.com> <br>
<b>Gesendet:</b> Dienstag, 26. Januar 2021 21:34<br>
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<p class="MsoNormal">Dear Schlick,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">It's indeed dropped, I think it's in favor of more native options. The go to replacement is lvm-cache (<a href="https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/logical_volume_manager_administration/lvm_cache_volume_creation">https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/logical_volume_manager_administration/lvm_cache_volume_creation</a>). <o:p></o:p></p>
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<p class="MsoNormal">This places just an amount of SSD storage as a cache layer in-front of your HDDs, using device mapping.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">If you're into ansible, you could use these play's; </span><a href="https://github.com/gluster/gluster-ansible-infra"><span lang="EN-US">https://github.com/gluster/gluster-ansible-infra</span></a><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal">it seems to operate pretty stable.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Best <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Olaf<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Op di 26 jan. 2021 om 20:34 schreef Schlick Rupert <<a href="mailto:Rupert.Schlick@ait.ac.at">Rupert.Schlick@ait.ac.at</a>>:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Dear List,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">could anyone enlighten me what happened to the tiered storage feature?<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">When finding references to it online, it seemed to be the perfect solution for my problem, but further digging shows it was removed in gluster 6.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">What digging did not show is why it was removed and if there are any suggestions to solve the issue of having fast and slow storage with glusterfs.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">I’m looking for a distributed storage for a small cluster (for now 3 nodes, 4 fast GPUs each). Space on NVMe SSDs is limited, the nodes are interconnected with
100Gb Infiniband.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Gluster seemed to be the perfect solution to mirror between the nodes, until I realized that tiered volumes are not supported anymore.
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">The removal baffles me a bit, since alternatives available under open-source licenses like MooseFS, BeeGFS, CEPH, Lustre have also solutions for hierarchical
storage management in some form and the use case seems to be a common one.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Best</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Rupert<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">________<br>
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