问题

在Nutanix平台顶部运行ZFS

z
  • Zain
  • 旅行者
  • 1回复

我运行了一个6节点的Nutanix群集，并计划使用ZFS池在VM内部运行一些容器（LXC），以利用Easy Clone，迁移，快照，主要是将这些克隆运送到其他系统（DR）（DR）

我读到ZFS需要直接与磁盘硬件打交道，以确保什么是什么或实际上没有写给磁盘的内容。

是否可以使用ZFS，在Nutanix平台上运行，涉及数据损坏风险或丢失池，因为它无法直接处理磁盘硬件？

硬件超级捆绑在一起，与Nutanix-Enterprise捆绑在一起。

    I run a 6-node nutanix cluster, and planing\u00a0to run some containers (LXC) , inside VM using ZFS pool, to leverage on easy clone, migrate, snapshot the containers mainly to transport those clones to other system (DR)<\/p>

    I read that ZFS need to deal directly with disks hardware to be sure about what is or what is not actually written to disks.\u00a0<\/p>

    Is ZFS suaitable or not, being run on top of nutanix platform, concerning the data corruption risk or losing pool, because it can\u2019t deal directly with disk hardware?<\/p>

    Hardware is supermicro bundled with nutanix-enterprise.<\/p>","quoteUsername":"zain","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

    3个答复

    杰里米
    秩
    UserLevel 3
    徽章 +4

    你好 @zain

    听起来您已经意识到ZF可能无法在虚拟磁盘中执行预期的某些原因。从审查可用文档，他们警告不要在另一个文件系统上实施，并警告性能损失和其他潜在问题。

    我补充说，当ZF中包含的任何磁盘健康监测功能充其量是荒谬的，当应用于Nutanix分布式文件系统上的VM磁盘时。ZFS似乎旨在充分利用（廉价）商品硬件，并包括一些磁盘健康监控和磁盘设备调整。ZFS中的任何文件系统块都可以是Nutanix分布式文件系统（DFS）中一个或多个文件系统块的一部分，并且这些DFS块中的任何一个都将位于集群中的两个或多个物理磁盘上，并可能在SSD和HDD层之间迁移在数据的生命周期期间。因此，任何尝试识别和监视基础物理设备的尝试根本无法依靠它是一个小时到另一个小时的同一设备。

    我建议审查Docker存储注意事项部分AHV上的Docker容器最佳实践指南，并确定是否可以成功应用相同的推理和建议。虽然Docker与LXC不会完全相同，但它是最接近的模拟，并经过了彻底的审查，您会看到作者花时间在制定建议之前考虑ZFS等其他可用选项。

    hello @zain<\/user-mention>\u00a0<\/p>

    It sounds like you\u2019re already aware of some reasons why ZFS may not perform as expected in a virtual disk. From reviewing the available documentation they caution against implementing on top of another filesystem with warnings of performance losses and other potential issues.<\/p>

    I\u2019ll add that any disk health monitoring features included in ZFS would be nonsensical\u00a0at best when applied to a VM disk on the Nutanix distributed filesystem. ZFS seems designed to make good use of (cheaper) commodity hardware and included some disk health monitoring and disk-device tweaks to do so. Any filesystem block in ZFS could be part of one or more filesystem blocks in the Nutanix Distributed FileSystem (DFS), and any of those DFS blocks would reside on two or more physical disks in the cluster and would likely migrate between the SSD and HDD tiers during the lifecycle of the data. Because of this any attempt to recognize and monitor the underlying physical device simply couldn\u2019t rely on it being the same device from one hour to the next.<\/p>

    I would recommend reviewing the Docker Storage Considerations<\/a>\u00a0section of the\u00a0Docker Containers on AHV<\/a>\u00a0 best practices guide, and determining whether the same reasoning and recommendations can be successfully applied to your deployment. While Docker won\u2019t be quite the same thing as LXC, it\u2019s the closest analog that\u2019s been thoroughly vetted and you\u2019ll see the authors took the time to consider ZFS among other available options before forming their recommendations.<\/p>

    \u00a0<\/p>","quoteUsername":"JeremyJ","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

    z

    亲 @JEREMYJ，，，，

    谢谢你的解释。我已经认为DFS上的ZFS就是这种情况，我需要确定。

    dear @JeremyJ<\/user-mention>\u00a0,<\/p>

    \u00a0<\/p>

    thank you for your explanation. I already thought that is the case about ZFS on DFS,\u00a0 I need\u00a0to be sure.<\/p>","quoteUsername":"zain","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

    e

    @JEREMYJ我仍然相信Nutanix应该支持ZFS，是的，它可能会引起某些性能问题，并且还违反了文件系统的自动愈合功能的目的，对我而言，我大部分时间都在使用FreeBSD，而ZFS是如此强大的文件系统，不仅是因为它的自动修复功能..而且是快照，压缩以及现在的加密，文件系统的数据集样式也是我喜欢的一件事。对我来说，ZFS提供的功能远远超过ZFS在DFS文件系统上引起的性能问题。

    @JeremyJ<\/user-mention>\u00a0I still believe that ZFS should be supported in nutanix, yes it may incur some performance issue and also defeat the purpose of the auto healing features of the file system, for me I am using FreeBSD most of the time and ZFS is such powerful file system, not just because its auto-healing features.. but snapshot, compression and now with encryption, the dataset style of the file system also one thing I like. For me, the features that ZFS offer far outweigh the performance issue imposed by ZFS on DFS file system.<\/p>","quoteUsername":"Eman Zane","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

    回复


    条款和条件
    Learn more about our cookies.<\/a>","cookiepolicy.button":"Accept cookies","cookiepolicy.button.deny":"Deny all","cookiepolicy.link":"Cookie settings","cookiepolicy.modal.title":"Cookie settings","cookiepolicy.modal.content":"We use 3 different kinds of cookies. You can choose which cookies you want to accept. We need basic cookies to make this site work, therefore these are the minimum you can select. Learn more about our cookies.<\/a>","cookiepolicy.modal.level1":"Basic
    Functional","cookiepolicy.modal.level2":"Normal
    Functional + analytics","cookiepolicy.modal.level3":"Complete
    Functional + analytics + social media + embedded videos"}}}">
    Baidu