PCPU locked up on Cisco UCS

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PCPU 20 locked up. Failed to ack TLB invalidate
Error message of the PSOD

ESXi 5.5 Update 2 is stable version, but I got PSOD on one UCS blade few days ago. It scared me since there was a big bug when I upgraded ESXi from 5.1 to 5.5 Update 1 last year(See detail ESXi 5.5 and Emulex OneConnect 10Gb NIC), it lead to dozen virtual  machines crashed over and over again.I bet I’m gonna to die if it happens again. 🙂

ESXi 5.5 Update 2 算得上比较稳定的版本了，但前几天遇到一台紫屏，差点儿吓尿了。半年前从ESXi 5.1升级到ESXi5.5 Update 1时候遇到个大BUG（详情见我的文章ESXi 5.5 and Emulex OneConnect 10Gb NIC），搞得几十台几十台机器挂，这次升级再来一次估计职业生涯就此结束了。

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How to Automate Snapshot on Virtual Machine

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I always treat virtual machine snapshots like a big risk. It caused several outages in our infrastructure. Please check out Best practices for virtual machine snapshots in the VMware to understand how it impacts production.

虚拟机快照对我来说绝对是个大威胁，已经在我的生产环境里发生过好几次由此引发的故障了。如果你要了解快照对生产环境的影响可以看看：Best practices for virtual machine snapshots in the VMware

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Hack D-Link Wifi Router

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Someone setup a non-secure wifi around my apartment, I never connected it till yesterday since I worried it’s may be a honeypot. I had some me time yesterday night, so I setup a virtual machine to connect the wifi.

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How to integrate PowerCLI with PowerShell and PowerShell ISE

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I wrote a post about how to integrate PowerCLI with PowerShell manually. I rebuilt my computer few days ago, need to integrate PowerCLI again. I used to scripting by PowerGUI, but something always lead to PowerGUI lost menu, it frustrated me a long time. I cannot figured out what’s the root cause. So I wondered is it possible use PowerShell ISE instead of PowerGUI?

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CustomAction VM_InstallJRE returned actual error code 1624

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vCenter Server 5.5 Update 2e contains fix of Storage Monitor Service. It’s also a stable version since 5.5 Update 1. I got a problem when I upgraded my development vCenter Server last weekend. I’d like to share the solution since VMware doesn’t document that problem. (Maybe I didn’t find it. :-)) It’s kind tricky.

vCenter Server 5.5 Update 2e包含SMS服务的bug修复，它也是当前比较稳定的版本。上周我在升级vCenter Server到这个版本时遇到了一个问题。此问题不是那么容易修复因为VMware的KB并没有提供解决方案，我在这里把我的方法共享出来。

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Transparent Page Sharing (TPS) is disabled by default in latest ESXi 5.5 patch

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I just heared Transparent Page Sharing (TPS) is disabled by default in latest ESXi 5.5 patch. You may concern about that if your IT budget is tight since it means you need more memory for heavy virtual machines.

听说ESXi 5.5最新的patch里把TPS禁用了，专门研究了一下。觉得这对IT预算紧张的企业可能是个坏消息，因为这意味着你需要更多的内存应付大型虚拟机。

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A very interesting Microsoft cluster failure

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It’s been a long time sine last post. I was out of internet due to health issue. Just got recovered and backed to normal work. I have to publish my article by English then translate it to Chinese later since I lost lot of me time after my baby born, but more fun. hopefully it … Read more

How to find corresponded physical disk for Hyper-V CSV volumes

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CSV (Cluster Shared Volume) is fundamental of Microsoft Hyper-V. You must have it to leverage Live Migration and High Availability features. But it’s very confuse when you want to reclaim CSV since CSV is using different name with physical disks. For example, CSV name usually is “Cluster Disk x”, path usually is “C:ClusterStorageVolumeX”. But real disk name is “Disk x” in Disk Manager. You have to very carefully when delete the disk.

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