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Every once in a while a customer will ask me what to do with these messages: health: HEALTH_WARN1 large omap objects First lets see what this means: Ceph services are…
For a Ceph cluster I have two Juniper QFX5100 switches running as a Virtual Chassis. This Virtual Chassis is currently only performing L2 forwarding, but I want to move this…
Prior to Ceph Luminous you could only set the noout flag cluster-wide which means that none of your OSDs will be marked as out. On large(r) cluster this isn’t always…
Sometimes you want to test if changes you are about to make to a CRUSH map will cause data to move or not. In this case I wanted to change…
The Ceph Mgr dashboard plugin allows for an easy dashboard which can show you how your Ceph cluster is performing. In certain situations you can’t contact the Mgr daemons directly…
A few weeks ago, I posted a blog about how SUSE pulled the plug on SUSE Enterprise Storage (SES). SES…
read moreA few months back the news came that SUSE stops supporting its Ceph-based SUSE Enterprise Storage (SES) product to their…
read moreYou might be asking yourself, why talk about QD=1 bs=4k? Well, from the experience of Wido den Hollander, our colleague…
read moreEvery once in a while a customer will ask me what to do with these messages: health: HEALTH_WARN1 large omap…
read moreWhile we’ve been working with customers using Ceph in a variety of ways, we have encountered some several ways to…
read moreWith June already here, it is time for the annual Ceph month. Previously held as a conference and called Cephalocon,…
read moreCeph has emerged as the leading distributed storage platform. By using commodity hardware and software-defined controls, Ceph has proven its…
read moreAt this moment we are busy with the organization of another Cephalocon. Cephalocon is an annual event organized by the…
read moreStable, secure data storage is probably one of the most important things in today’s data driven world. With the ability…
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