< Unspecified file name > file is larger than the maximum size supported by datastore '< indeterminate datastore >.

I know that this issue has much spoken in the forums, but the answers are always to make sure that your block sizes are set to 8 MB - mine are already. Let me explain:

I have a virtual machine with a large amount of connected storage - something along the lines of discs 10 x 1.99 to. Sit all VMDK on partitions of the VMFS of 8 MB of size block, including the configuration of the VM (location of the pagefile).

Every time I try and snapshot of the virtual machine, I see the "< unspecified file name > file is larger than the maximum size supported by the data store ' < unspecified datastore >. All other virtual machines instant fine, but any other VM has a similar amount of storage as the VM problem.

I have now moved the configuration files of the virtual machine to a new partition VMFS 5 of 1.91 TB, but the instant error persists. Most of the readers is sitting on VMFS 3.33 or 3.46. It will take me a while to move all VMFS 5 to see if that solves the problem.

VMware.log for VM reports:

2011-10-09T09:55:55.328Z| vcpu-0|  DiskLibCreateCustom: Unsupported disk capacity or disk capacity (2186928627712 bytes) is too large for vmfs file size.
2011-10-09T09:55:55.328Z| vcpu-0| DISKLIB-LIB   : Failed to create link: The destination file system does not support large files (12)
2011-10-09T09:55:55.328Z| vcpu-0| SNAPSHOT: SnapshotBranchDisk: Failed to branch disk: '/vmfs/volumes/4dc30ba3-b13c5026-92d8-d485643a1de4/spoon-app/spoon-app_2.vmdk' -> '/vmfs/volumes/4dc30ba3-b13c5026-92d8-d485643a1de4/spoon-app/spoon-app_2-000001.vmdk' : The destination file system does not support large files (12)

My VMDK and volumes are smaller than 2032GB. I don't understand why, it's be a problem.

Anyone have any ideas?

Although ESXi 5 supports larger LUN as a raw physical devices (up to 64 TB), the maximum size of a virtual disk has not yet changed.

André

Tags: VMware

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