https://waylonwalker.com/tags/kubernets/atom.xml 2025-08-15T19:13:56Z All posts with the tag "kubernets" Waylon Walker markata-go https://waylonwalker.com/thought-798/ 2025-08-15T19:13:56Z 2025-08-15T19:13:56Z

!https://github.com/longhorn/longhorn/discussions/6964

<div class="embed-card embed-card-external"> <a href="https://github.com/longhorn/longhorn/discussions/6964" class="embed-card-link" target="_blank" rel="noopener noreferrer"> <div class="embed-card-image"> <img class="glightbox" src="https://opengraph.githubassets.com/3ef5e06da915e8435ecd50368f3eeb8e8f0e4ab29fb9f9a8617cf4465c9496bc/longhorn/longhorn/discussions/6964" alt="Performance Difference between RWX and RWO volumes · longhorn longhorn · Discussion #6964 — Hey all, because of some internal testing I made a couple of experiments on our Cluster related to performance of RWX and RWO volumes. Because this might be of interest to some people I thought I s..." loading="lazy"/ data-glightbox="description: Performance Difference between RWX and RWO volumes · longhorn longhorn · Discussion #6964 — Hey all, because of some internal testing I made a couple of experiments on our Cluster related to performance of RWX and RWO volumes. Because this might be of interest to some people I thought I s..."> </div> <div class="embed-card-content"> <div class="embed-card-title">Performance Difference between RWX and RWO volumes · longhorn longhorn · Discussion #6964</div> <div class="embed-card-description">Hey all, because of some internal testing I made a couple of experiments on our Cluster related to performance of RWX and RWO volumes. Because this might be of interest to some people I thought I s...</div> <div class="embed-card-meta">GitHub · github.com</div> </div> </a> </div> <p>Interesting longhorn storage performance test, author does highlight right away that this is a simulation and not a REAL test. I did not fully understand the storage semantics before reading through this.</p> <ul> <li><strong>RWO</strong> - Always presents a filesystem <code>ext4</code> or <code>xfs</code></li> <li><strong>RWX</strong>/<strong>ROX</strong> - Always presents a network share <code>nfs</code> to the pod.</li> </ul> <p>This is an important distinction for applications that use sqlite or a tool on top of sqlite such as diskcache. With sqlite it is not recomended to run over nfs due to missing required file locking mechanisms.</p> <p>Longhorn storage still provides a lot of benefits to these applications as the storage is automatically replicated, if the node that your application is running on goes offline a new pod will start on an existing node. If you have planned downtime, you can cordon and drain a node. Since the data is available in another location you will be able to start a new pod on anther node. barring your PodDisruptionBudget settings, taints, and affinity, this may happen automatically.</p> <div class="admonition note"> <p class="admonition-title">Note</p> <p>This post is a <a href="/thoughts/" class="wikilink" data-title="Thoughts" data-description="These are generally my thoughts on a web page or some sort of url, except a rare few don&#39;t have a link. These are dual published off of my..." data-date="2024-04-01" data-preview="These are generally my thoughts on a web page or some sort of url, except a rare few don&#39;t have a link. These are dual published off of my...">thought</a>. It’s a short note that I make about someone else’s content online <a href="/tags/thoughts/" class="hashtag-tag" data-tag="thoughts" data-count="2" data-reading-time="3" data-reading-time-text="3 minutes">#thoughts</a></p> </div> Waylon Walker hello@waylonwalker.com https://waylonwalker.com