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快照独家用法与可回收空间

1
徽章 +1
大家好，
我创建了一个使用一个VM的保护域。我已经设置了每天的时间表，保留政策为5。当我查看本地快照时，我向我展示了最后5个可用的快照。当我将盒子打勾时，这是一样的。当我为这5个快照的可回收空间加起来时，总计为143.72 MIB。当我查看PD的“快照独家用法”的价值时，它告诉我492.48 MIB。为什么有区别？
在一个相关问题上：删除快照时对性能有什么影响？我了解这是一个背景过程，但是在启动或运行时会对受保护的VM产生任何影响？
环境正在运行AOS 5.0.1。
谢谢你。
马克。
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最好的答案dlink72017年6月8日，05:16

查看原件
    \nI have created a Protection Domain with one VM. I have setup a daily schedule with a retention policy of 5. When I look at the local snapshots, I shows me the last 5 snapshots that are available. This is the same when I tick the box \"Include Expired\". When I add up the reclaimable space for these 5 snapshots, the total comes to 143.72 MiB. When I look at the value of \"Snapshot Exclusive Usage\" for the PD, it tells me 492.48 MiB. Why the difference?
    \nOn a related question: what is the impact on performance when deleting snapshots? I understand it is a background process, but is there any impact on the protected VM(s) when this is initiated or while it runs?
    \nThe environment is running AOS 5.0.1.
    \nThank you.
    \nMarc.","quoteUsername":"1marc1","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
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    7个答复

    dlink7
    UserLevel 4
    徽章 +19
    快照独家是该快照特定的数据，即，从快照链中的任何其他vdisk中没有引用该VDisk中的Vblocks。
    可回收空间：这是空间将更高）

    该数字应等于或高于上述数字的总和
    \nreclaimable space: this is the space is going to be higher since this also accounts for vblocks in the vdisk snapshot chain further down that are purely references by just the snapshot (there could be other regions that are referenced by other vdisks further up the snapshot chain)
    \n
    \nthis number should be equal to or higher than the summation of the above number","quoteUsername":"dlink7","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
    1
    徽章 +1
    感谢您的回复Dlink7，但是我仍然有些困惑。
    首先，您能否回顾一下您对“快照独家”和“可回收空间”的描述确实属于这些术语？我觉得你把它们换成了。

    我决定扩展Nutanix圣经中的图纸，以尝试解决这个问题。在下面查看我的图纸内联。







    您（或其他任何人）可以看看我在双重概述框中得出的结论是否与可回收空间和快照独家用法有关？

    谢谢你。

    马克。
    \nFirst of all, can you review that the descriptions you have given for \"snapshot exclusive\" and \"reclaimable space\" indeed belong to these terms? I have a feeling that you swapped them around.
    \n
    \nI decided to expand on the drawing that is in the Nutanix bible to try to get to grips with this. See my drawing inline, below.
    \n
    \n
    \n
    \n

    <\/a><\/p>
    \n
    \n
    \n
    \nCan you (or anyone else) have a look to see if the conclusions I draw in the double outlined boxes are correct in relation to reclaimable space and snapshot exclusive usage?
    \n
    \nThank you.
    \n
    \nMarc.","quoteUsername":"1marc1","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

    dlink7
    UserLevel 4
    徽章 +19
    试图获得一些帮助以确认某些情况。我还认为在UI中应该被称为PD快照独家，因为这似乎是一个总体。
    1
    徽章 +1
    嗨，dlink7，

    您是否为此获得了进一步的帮助？

    马克。
    \n
    \nDid you manage to get some further assistance with this?
    \n
    \nMarc.","quoteUsername":"1marc1","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
    dlink7
    UserLevel 4
    徽章 +19
    你的右边被交换了。您的图表看起来也不错。对不起，我本周离开下班。
    dlink7
    UserLevel 4
    徽章 +19
    你的右边被交换了。您的图表看起来也不错。对不起，我本周离开下班。与文档合作以使内容更新。
    dlink7
    UserLevel 4
    徽章 +19
    您的图和假设被交换是正确的。抱歉，我本周出门了。
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