News

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  What is what: XCP-ng, XCP-ng Center, XenOrchestra, XOA, Vates
  • borzel  

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  News section: bring your news here!
  • olivierlambert  

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  Article from Switzerland (in german, wrong fact: format missmatch on upgrade from XS): https://www.weka.ch/themen/it-technik/it-systemmanagement/systemadministration/article/xcp-ng-frischer-wind-auf-dem-virtualisierungsmarkt/
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  XCP-ng 8.0.0 Beta now available!
  • stormi  

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  @Ultra2D said in XCP-ng 8.0.0 Beta now available!: @cg You should be careful when recommending dedup on ZFS. I think (but my knowledge might be outdated) there are still at least some caveats people should be aware of. A quick search reveals you typically need 1-5 GB of RAM per TB of storage. As a rule of thumb I have 1 GB per TB of storage in mind and I'm not aware of any problems with Dedup or Compression on ZFS(oL). I wouldn't touch that (and RAID beside 0/1/10) on btrfs though - that's probably why many people are interested in ZFSoL, although the licenses are somewhat tricky. I don't have much experience with dedup on ZFS tough, I just did some tests with about 100 of storage on another system and it worked perfect - just not the result I hoped to get, but that's data-dependend. But hey: Prove me I'm wrong. Don't forget sources/links plz. and keep the versions in mind!
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  Turnkey XOA deploy from xen-orchestra.com
  • olivierlambert  

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  XCP-ng Center 8.0.0 released
  • borzel  

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  @apayne as listed in the release notes, there is no help until someone cares about and does the work: https://github.com/xcp-ng/xenadmin/issues/20 borzel created this issue in xcp-ng/xenadmin open What about the help files (*.chm) #20
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  Citrix Hypervisor 8.0 landed
  • olivierlambert  

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  @stormi dd stands for disk dump and does exactly that: Copy a stream of data. Fio however can be configured for precise workloads and read/write mixes, parallel workloads etc. So the first thing will only give you streamline benchmarks, what almost nobody cares about. The second can simulate realworld (VM/database...) workloads, where (controller) Caches and non magnetic storage (Flash, Optane, MRAM...) makes the real difference. Also use big amount of data, since caches can impact small ones extremely. Don't get me wrong: We need them and they can make huge differences, but as long as your benchmarks fully fit into them, it gives your nonsense/fake results. Also (consumer) SSDs start throttling after some 10 to a very few 100 GB of data written. Their caches fill up and they 'overheat'. You can spend days on benchmarks and how to do what.
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  Spread the XCP-ng love and vote for Open Awards 2019!
  • Marc.pezin  

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  Good news, the vote are closed and the Public Center for Social Welfare's case study is first as we hoped! https://a.cstmapp.com/voteme/31130/633291567 Thank you everyone!
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  New XCP-ng "theme" in shell
  • olivierlambert  

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  Thanks for your input! I think it might be the one then Also, if there is a big problem with it, we can always update the package!
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  XCP-ng Security Bulletin: MDS hardware vulnerabilities in Intel CPUs
  • stormi  

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  No one raised their hands, and yet an update candidate for 7.5 is available with the fixes backported from 7.6. Install it with yum update --enablerepo='xcp-ng-updates_testing' microcode_ctl xen-dom0-libs xen-dom0-tools xen-hypervisor xen-libs xen-tools We've tested it locally, works fine for us.
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  This topic is deleted!
  • elias.medina  

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  Meet Vates during Vivatech 2019
  • Marc.pezin  

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  XCP-ng mirrors
  • olivierlambert  

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  Dev diaries #1: Analyzing storage perf (SMAPIv3)
  • ronan-a  

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  @Kalloritis I'm not sure about that. You see a stack of "unknown" functions because the tapdisk binary was not compiled with all debug symbols, contrary to qemu-dp. And I'm waiting for the next XenServer release before continuing this diary.
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  XCP-ng issue 1: closed!
  • olivierlambert  

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  Nicely done!
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  Xen 4.12 just landed
  • olivierlambert  

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  Terraform provider for Xen Orchestra
  • olivierlambert  

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  XO 5.33 is available
  • olivierlambert  

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  I don't know what's xo-updater, maybe an external script, but it's not the upstream one from XOA or XO project. And yes, there is some patches sometime (for xo-server, which is one package of Xen Orchestra). For example, xo-server in 5.38.0 never landed in XOA, because we did some QA before and found some issues. We patched it, and then we've done some QA again, and then we decided to release Xen Orchestra 5.33. That's why you can have sometimes some surprises from the sources, because it's not officially tested (unlike in XOA)
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  Netdata plugin for XCP-ng
  • olivierlambert  

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  XCP-ng team is growing
  • olivierlambert  

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  Welcome @BenjiReis !
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  New Xen XSA's
  • olivierlambert  

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  So: The updates have been made available by Citrix on last wednesday We've published update candidates for testers on thursday Updates for XCP-ng 7.6 have been made available to everyone yesterday Updates for XCP-ng 7.5 have been made available to everyone this morning Blog post published: https://xcp-ng.org/blog/2019/03/12/xcp-ng-security-bulletin-vulnerabilities-pv-guests/