FIX: Mount Vmfs Datastore On Windows

You may see an error indicating that the vmfs datastore is mounted on Windows. There are several ways to fix this problem, so we’ll look at it shortly.

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VMware Workstation is a PC software for installing VMDK under Windows. Just open it and select the “File” tab on the taskbar. Then select “Connect virtual disks …” from the list. Then you need to specify the drive letter where you really want to mount the VMDK file and click OK.

Today we will see three easy ways to access data types stored in a VMFS datastore associated with an ESXi host (these are project files, data files, and snapshots from virtual machines) Linux, Windows, and ESXi. In fact, this article is a real-life case of that client where a single performing web server with a VMware ESXi hypervisor suddenly stopped working.

If your ESXi host crashes, but the server’s local hard disk (s) is functional, you can still copy the virtual system files (both data disks and project files) from the VMFS datastore and move them to another virtual car. (also on VMware Workstation or Hyper-V). The main problem is that the mainstream (Windows and Linux) as well as the default systems do not currently recognize a VMFS partition because they do not have a VMFS driver. In this article, we will see how to use the ideal VMFS system file to access virtual machine files on the hard drive.

The problem was that the VMware virtual server was not configured so well that there was no time to diagnose and troubleshoot ESXi host boot issues. Therefore, it was decided to manually copy the critical files of the fitness virtual machines from the VMFS storage and immediately run them on another host with ESXi installed.

Let’s look at three scenarios similar to data access in datastore virtual machines.

How To Mount A File System Here’s VMFS For Linux (Ubuntu)

You can mount a specific partition with the VMFS file system and redirect the computer with ie8 installed (Ubuntu Live CD will not work for us in this case).

First of all, you need to mount a VMFS physical hard drive on your computer (server) when you have Ubuntu installed. To still access data on the VMFS volume, you need to install the special third-party vmfs-tools package. This package makes it easy to access VMFS from non-ESXi hosts. Can your organization access the data in this section in read-only mode. Second major issue: the vmfs-tools developers officially support versions of the VMFS system file up to VMFS 5.0. The ability to mount one partition with VMFS (vSphere 6 6.0 is always 6.5.) Not guaranteed.

After installing Provide, you need to set up a mount point where all VMFS partitions are mounted:

Now we need to examine some partitions on the hard drives. creates meaningful numbering service for partitions if configured as virtual machine files (VM partitionFS) in addition to section.

If the ESXi version is often 4 or earlier, or if the VMFS storage has been upgraded from VMFS 3 to VMFS 5, its size and size does not mimic 2 TB, display the list of disks and partitions as follows:

As you can see, the VMFS partition is now / dev / sdb3 (labeled VMware VMFS).

Now all you have to do is mount the partition where you can see the memory:

Vmfs, now you can see all virtual machine files in VMFS storage, which are available in read-only mode. This means that you can copy directories and / or individual directories of the required virtual machines, copy them to a separate disk and run another ESXi host on them.

Accessing VMFS Volumes From Windows

To mount a VMFS business volume and access Windows virtual machine files, you need a dedicated Java driver — the open source VMFS driver. This driver requires Java vi or higher and allows read-only mounts of VMFS volumes.

You can download open source VMFS here: Contributor https://code.google.com/archive/p/vmfs/. At the momentuntil this project was updated in 2010 and the latest version of Biker available on the website is the VMFS r95 driver, it also only supports VMFS 3 (

Reviews. When you try to join a newer version of VMFS, you get an error voice message: “VMware file system not recognized.”

Install The Awesome Existing VMFS Datastore On The ESXi You Are Hosting

As you can see, in both of the above cases, third-party VMFS drivers for Linux and, moreover, Windows do not allow VMFS 6.0 to work. Therefore, the most universal method of accessing data on a failed VMFS partition of a server is to connect its disks to each new ESXi server (you can configure ESXi on a new host that lives in less than an hour). This is really the easiest way. On this system, you can reconnect both a sufficiently hard physical disk and a storage LUN (via FC or iSCSI).

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The new ESXi host should easily identify the attached VMFS datastore and you can also access the files there.

Follow the leadSee the following calculations to attach your existing VMFS storage to a new ESXi array without formatting it:

1. Connect to the young ESXi server using the vSphere web client;
2. Connect the drive to the new server and perform another memory scan.
3. Go to the “Configure” -> “Data warehouse” section and also select “Create a new data warehouse item”;
4. Select the type of storage area: Disk or LUN;
5. Select our own disk (LUN) connected to the VMFS storage from the list of contacts of available devices;
6. Select the connection mode. Select Keep All Existing Signature Element;
7. Now you can find the information and facts you need about the vmx, save it to the host, and start critical virtual machines immediately.

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 apt-get load vmfs-tools 

Reviews. Only vmfs-tools 0.2.1 is available in the ubuntu repository, and the major drawback is that the problem can only work with VMFS v3. If you need to mount VMFS 5 datastore, you can download and install vmfs-tools 0.2.5 and / or higher, for example here:

1. http://mirrors.kernel.org/ubuntu/pool/universe/v/vmfs-tools/vmfs-tools_0.2.5-1_amd64.deb is an important package for a 32-bit system.
2. http://mirrors.kernel.org/ubuntu/pool/universe/v/vmfs-tools/vmfs-tools_0.2.5-1_i386.deb – one package for each 64-bit system.

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 #wget http://mirrors.kernel.org/ubuntu/pool/universe/v/vmfs-tools/vmfs-tools_0.2.5-1_amd64.deb

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 #dpkg -i vmfs-tools_0.2.5-1_amd64.deb 

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 # apt-get install vmfs-tools 

Important. ESXi 5 later, VMFS v5 will be used for the GPT partition table. The Partition Guid table allows you to create larger storage (over 2 TB) simply because the RDM disks are connected in physical mapping mode. To see the type of the partition table, you need to use the command separately instead of fdisk.

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 # vmfs-fuse / dev / sdb3 / mnt / vmfs 

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Lawrence Scanlon

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